{"already_in_source_count":0,"candidate_count":210,"cross_major":false,"cve_available":true,"cve_count":0,"cves":[],"duplicate_count":0,"excluded_count":0,"exclusions":[],"from_release":null,"groups":[{"age_days":413,"build":"18.0","changes_count":199,"compatibility_count":11,"content_hash":"18846b73e34c6c5402520e411e973c0a253591050c63dbc366a66ce751e0aeaa","date":"2025-09-25","date_text":"2025-09-25","doc_git":"","doc_loaded_at":"2026-09-25T02:22:44.760693","entries":[{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["04bec894a04"],"commit_groups":[["04bec894a04"]],"commits":["04bec894a04"],"cves":[],"db_id":"f3c7465886914cc33d3dae8014f0ac38","html":"\u003cp\u003eChange \u003ca href=\"/docs/18/app-initdb.html\" title=\"initdb\"\u003e\u003cspan\u003e\u003cspan\u003einitdb\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e default to enable data checksums (Greg Sabino Mullane) \u003ca href=\"https://postgr.es/c/04bec894a04\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eChecksums can be disabled with the new \u003cspan\u003einitdb\u003c/span\u003e option \u003ccode\u003e--no-data-checksums\u003c/code\u003e. \u003ca href=\"/docs/18/pgupgrade.html\" title=\"pg_upgrade\"\u003e\u003cspan\u003e\u003cspan\u003epg_upgrade\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e requires matching cluster checksum settings, so this new option can be useful to upgrade non-checksum old clusters.\u003c/p\u003e","id":"18.0-a8fa82432892119f","identity_text":"Change app-initdb default to enable data checksums (Greg Sabino Mullane) Checksums can be disabled with the new initdb option --no-data-checksums. pgupgrade requires matching cluster checksum settings, so this new option can be useful to upgrade non-checksum old clusters.","part":"migration","patch_ids":["f78286ddb1f2e6833c76c4a8351542bf"],"related_changes":[{"db_id":"db70c584fb64d9f59231adb14744b4a2","evidence":{"patch_ids":["f78286ddb1f2e6833c76c4a8351542bf"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-APPS","title":"Change initdb to default to enabling checksums","url":"/docs/compare/?release=18.0#18.0-d9b49042b8f09224","version":"18.0"}],"relations":[{"evidence":{"patch_ids":["f78286ddb1f2e6833c76c4a8351542bf"],"same_day":true},"rule":2,"target":"db70c584fb64d9f59231adb14744b4a2","type":"related"}],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["04bec894a04"],"source_entry_id":"18.0/migration/001","source_hash":"ab496434d25411703b78d251977a161d4f481117f9a61c9a5ed39e5056795861","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"8b50759677598fe7ea5e5a6df6d0083c36bbd43c74224fd00ca0fd9966a22f2f","text":"Change initdb default to enable data checksums (Greg Sabino Mullane) § Checksums can be disabled with the new initdb option --no-data-checksums. pg_upgrade requires matching cluster checksum settings, so this new option can be useful to upgrade non-checksum old clusters.","title":"Change initdb default to enable data checksums","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["d7674c9fa"],"commit_groups":[["d7674c9fa"]],"commits":["d7674c9fa"],"cves":[],"db_id":"2343bc4fd897605d6495c765dfdc2774","html":"\u003cp\u003eChange time zone abbreviation handling (Tom Lane) \u003ca href=\"https://postgr.es/c/d7674c9fa\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe system will now favor the current session's time zone abbreviations before checking the server variable \u003ca href=\"/docs/18/runtime-config-client.html#GUC-TIMEZONE-ABBREVIATIONS\"\u003etimezone_abbreviations\u003c/a\u003e. Previously \u003ccode\u003etimezone_abbreviations\u003c/code\u003e was checked first.\u003c/p\u003e","id":"18.0-d328de9397b5e0d5","identity_text":"Change time zone abbreviation handling (Tom Lane) The system will now favor the current session's time zone abbreviations before checking the server variable guc-timezone-abbreviations . Previously timezone_abbreviations was checked first.","part":"migration","patch_ids":["4fb970b4bd6121eaf0178066f8ea909c"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["d7674c9fa"],"source_entry_id":"18.0/migration/002","source_hash":"ec9a6dbcae9b0cc2ac417b00bc0d62968e91e82fe34d0a8e1e8e63e896b46d5f","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"f8a25067db2d336959a2f40c8130ac1d55dcd167e4db04c3249bec7147a49eb8","text":"Change time zone abbreviation handling (Tom Lane) § The system will now favor the current session's time zone abbreviations before checking the server variable timezone_abbreviations. Previously timezone_abbreviations was checked first.","title":"Change time zone abbreviation handling","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["db6a4a985"],"commit_groups":[["db6a4a985"]],"commits":["db6a4a985"],"cves":[],"db_id":"30aed22a7b379bfc7e845b051d348d35","html":"\u003cp\u003eDeprecate \u003ca href=\"/docs/18/auth-password.html\" title=\"20.5. Password Authentication\"\u003eMD5 password\u003c/a\u003e authentication (Nathan Bossart) \u003ca href=\"https://postgr.es/c/db6a4a985\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eSupport for MD5 passwords will be removed in a future major version release. \u003ca href=\"/docs/18/sql-createrole.html\" title=\"CREATE ROLE\"\u003e\u003cspan\u003eCREATE ROLE\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-alterrole.html\" title=\"ALTER ROLE\"\u003e\u003cspan\u003eALTER ROLE\u003c/span\u003e\u003c/a\u003e now emit deprecation warnings when setting MD5 passwords. These warnings can be disabled by setting the \u003ca href=\"/docs/18/runtime-config-connection.html#GUC-MD5-PASSWORD-WARNINGS\"\u003emd5_password_warnings\u003c/a\u003e parameter to \u003ccode\u003eoff\u003c/code\u003e.\u003c/p\u003e","id":"18.0-5b8f3e9c493f3cfc","identity_text":"Deprecate MD5 password authentication (Nathan Bossart) Support for MD5 passwords will be removed in a future major version release. sql-createrole and sql-alterrole now emit deprecation warnings when setting MD5 passwords. These warnings can be disabled by setting the guc-md5-password-warnings parameter to off.","part":"migration","patch_ids":["8c3ab652b8b1dc2fd0afe67ca881830c"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["db6a4a985"],"source_entry_id":"18.0/migration/003","source_hash":"a3c1406a89e6567a01f463dc017332ee26f86f6513954e4242d41228f630b354","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"680efa648cd65a0e690a37b96731050a958a0690ae89e623a11e01e1a072488e","text":"Deprecate MD5 password authentication (Nathan Bossart) § Support for MD5 passwords will be removed in a future major version release. CREATE ROLE and ALTER ROLE now emit deprecation warnings when setting MD5 passwords. These warnings can be disabled by setting the md5_password_warnings parameter to off.","title":"Deprecate MD5 password authentication","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["62ddf7ee9"],"commit_groups":[["62ddf7ee9"]],"commits":["62ddf7ee9"],"cves":[],"db_id":"c27156e947f09ff22df4dce5613e8f4c","html":"\u003cp\u003eChange \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003cspan\u003eANALYZE\u003c/span\u003e\u003c/a\u003e to process the inheritance children of a parent (Michael Harris) \u003ca href=\"https://postgr.es/c/62ddf7ee9\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe previous behavior can be performed by using the new \u003ccode\u003eONLY\u003c/code\u003e option.\u003c/p\u003e","id":"18.0-c84ca88e6e5518a9","identity_text":"Change sql-vacuum and sql-analyze to process the inheritance children of a parent (Michael Harris) The previous behavior can be performed by using the new ONLY option.","part":"migration","patch_ids":["29279fd7549098871f985b99df60e141"],"related_changes":[{"db_id":"94f45240a0275d0638838beebe665ece","evidence":{"patch_ids":["29279fd7549098871f985b99df60e141"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","title":"Allow VACUUM and ANALYZE to process partitioned tables without processing their children","url":"/docs/compare/?release=18.0#18.0-f2283e0ad8b607f4","version":"18.0"}],"relations":[{"evidence":{"patch_ids":["29279fd7549098871f985b99df60e141"],"same_day":true},"rule":2,"target":"94f45240a0275d0638838beebe665ece","type":"related"}],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["62ddf7ee9"],"source_entry_id":"18.0/migration/004","source_hash":"e38aa345a14711d367987f4fa89c4779eea36ec33d38f095e55fe5cee251a237","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"76658321347e57068ed0f32921beaf67fdfe6744b563a2f78d0f84beb89c3ac3","text":"Change VACUUM and ANALYZE to process the inheritance children of a parent (Michael Harris) § The previous behavior can be performed by using the new ONLY option.","title":"Change VACUUM and ANALYZE to process the inheritance children of a parent","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["770233748","da8a4c166"],"commit_groups":[["770233748"],["da8a4c166"]],"commits":["770233748","da8a4c166"],"cves":[],"db_id":"4f7cd257e4ad009f611f0caf979d438e","html":"\u003cp\u003ePrevent \u003ca href=\"/docs/18/sql-copy.html\" title=\"COPY\"\u003e\u003ccode\u003eCOPY FROM\u003c/code\u003e\u003c/a\u003e from treating \u003ccode\u003e\\.\u003c/code\u003e as an end-of-file marker when reading \u003cacronym\u003eCSV\u003c/acronym\u003e files (Daniel Vérité, Tom Lane) \u003ca href=\"https://postgr.es/c/770233748\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/da8a4c166\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"/docs/18/app-psql.html\" title=\"psql\"\u003e\u003cspan\u003e\u003cspan\u003epsql\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e will still treat \u003ccode\u003e\\.\u003c/code\u003e as an end-of-file marker when reading \u003cacronym\u003eCSV\u003c/acronym\u003e files from \u003ccode\u003eSTDIN\u003c/code\u003e. Older \u003cspan\u003epsql\u003c/span\u003e clients connecting to \u003cspan\u003ePostgreSQL\u003c/span\u003e 18 servers might experience \u003ca href=\"/docs/18/app-psql.html#APP-PSQL-META-COMMANDS-COPY\"\u003e\u003ccode\u003e\\copy\u003c/code\u003e\u003c/a\u003e problems. This release also enforces that \u003ccode\u003e\\.\u003c/code\u003e must appear alone on a line.\u003c/p\u003e","id":"18.0-dea78a5140a83ea5","identity_text":"Prevent COPY FROM from treating \\. as an end-of-file marker when reading CSV files (Daniel Vérité, Tom Lane) app-psql will still treat \\. as an end-of-file marker when reading CSV files from STDIN. Older psql clients connecting to PostgreSQL 18 servers might experience \\copy problems. This release also enforces that \\. must appear alone on a line.","part":"migration","patch_ids":["0d4f992d2be4de6ff4cd458ccb95eca4","1ea23822f2f40fda5f44f0d3d8abc20f"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["770233748","da8a4c166"],"source_entry_id":"18.0/migration/005","source_hash":"fea2a46c290c3f9965df10b2e76f7a4d57cffc9ed5493f2366fa39775ad33fe9","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"e79e11d3871e9ef0892573cfab7e0f55552a205043d862b2e9724ee4c69f4016","text":"Prevent COPY FROM from treating \\. as an end-of-file marker when reading CSV files (Daniel Vérité, Tom Lane) § § psql will still treat \\. as an end-of-file marker when reading CSV files from STDIN. Older psql clients connecting to PostgreSQL 18 servers might experience \\copy problems. This release also enforces that \\. must appear alone on a line.","title":"Prevent COPY FROM from treating \\. as an end-of-file marker when reading CSV files","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["e2bab2d79"],"commit_groups":[["e2bab2d79"]],"commits":["e2bab2d79"],"cves":[],"db_id":"8118dd69602467d30fb6a9609bba6b70","html":"\u003cp\u003eDisallow unlogged partitioned tables (Michael Paquier) \u003ca href=\"https://postgr.es/c/e2bab2d79\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003ePreviously \u003ca href=\"/docs/18/sql-altertable.html\" title=\"ALTER TABLE\"\u003e\u003ccode\u003eALTER TABLE SET [UN]LOGGED\u003c/code\u003e\u003c/a\u003e did nothing, and the creation of an unlogged partitioned table did not cause its children to be unlogged.\u003c/p\u003e","id":"18.0-c367683bb470a5d2","identity_text":"Disallow unlogged partitioned tables (Michael Paquier) Previously ALTER TABLE SET [UN]LOGGED did nothing, and the creation of an unlogged partitioned table did not cause its children to be unlogged.","part":"migration","patch_ids":["04e8ab00f8915683a43dd6f436a5c79b"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["e2bab2d79"],"source_entry_id":"18.0/migration/006","source_hash":"2a426f3624dd193ed36b9a5f8e99a1c2b6a654ba9a342e2deb4f460d5d74d69c","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"3b9bcae38ba730024eb2f2277a64804c55d104dbf649268784801db61ef784c1","text":"Disallow unlogged partitioned tables (Michael Paquier) § Previously ALTER TABLE SET [UN]LOGGED did nothing, and the creation of an unlogged partitioned table did not cause its children to be unlogged.","title":"Disallow unlogged partitioned tables","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["01463e1cc"],"commit_groups":[["01463e1cc"]],"commits":["01463e1cc"],"cves":[],"db_id":"ae8521434650fe5524c9fcaa38acac84","html":"\u003cp\u003eExecute \u003ccode\u003eAFTER\u003c/code\u003e \u003ca href=\"/docs/18/triggers.html\" title=\"Chapter 37. Triggers\"\u003etriggers\u003c/a\u003e as the role that was active when trigger events were queued (Laurenz Albe) \u003ca href=\"https://postgr.es/c/01463e1cc\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003ePreviously such triggers were run as the role that was active at trigger execution time (e.g., at \u003ca href=\"/docs/18/sql-commit.html\" title=\"COMMIT\"\u003e\u003cspan\u003eCOMMIT\u003c/span\u003e\u003c/a\u003e). This is significant for cases where the role is changed between queue time and transaction commit.\u003c/p\u003e","id":"18.0-0d2c2c2259abf618","identity_text":"Execute AFTER triggers as the role that was active when trigger events were queued (Laurenz Albe) Previously such triggers were run as the role that was active at trigger execution time (e.g., at sql-commit ). This is significant for cases where the role is changed between queue time and transaction commit.","part":"migration","patch_ids":["917ba717810e74a1c7c638690cf0f5eb"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["01463e1cc"],"source_entry_id":"18.0/migration/007","source_hash":"f10785acbe9b26f28a8c98e9a00c1d2a4e8afa8c0b7f7291f990211dfc079f53","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"f0612c07183e11ac71073f5d359d3b0a521ebcc0822d94befe83c23059d03016","text":"Execute AFTER triggers as the role that was active when trigger events were queued (Laurenz Albe) § Previously such triggers were run as the role that was active at trigger execution time (e.g., at COMMIT). This is significant for cases where the role is changed between queue time and transaction commit.","title":"Execute AFTER triggers as the role that was active when trigger events were queued","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["fefa76f70"],"commit_groups":[["fefa76f70"]],"commits":["fefa76f70"],"cves":[],"db_id":"421b9236b8ba45e9981de4acb0936336","html":"\u003cp\u003eRemove non-functional support for rule privileges in \u003ca href=\"/docs/18/sql-grant.html\" title=\"GRANT\"\u003e\u003cspan\u003eGRANT\u003c/span\u003e\u003c/a\u003e/\u003ca href=\"/docs/18/sql-revoke.html\" title=\"REVOKE\"\u003e\u003cspan\u003eREVOKE\u003c/span\u003e\u003c/a\u003e (Fujii Masao) \u003ca href=\"https://postgr.es/c/fefa76f70\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThese have been non-functional since \u003cspan\u003ePostgreSQL\u003c/span\u003e 8.2.\u003c/p\u003e","id":"18.0-607cc591e9d82ae8","identity_text":"Remove non-functional support for rule privileges in sql-grant / sql-revoke (Fujii Masao) These have been non-functional since PostgreSQL 8.2.","part":"migration","patch_ids":["1a39a92752613c9674e39e99f119c2de"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["fefa76f70"],"source_entry_id":"18.0/migration/008","source_hash":"db08cd3d3ddd023cec8d6165fd052ba6e7d655cc958d6c238b6f02af024dc1a1","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"9a9f6ec57f00ae867aca818ec5c55d43899650a49ee6ab2ce0bed4d154bb41b9","text":"Remove non-functional support for rule privileges in GRANT/REVOKE (Fujii Masao) § These have been non-functional since PostgreSQL 8.2.","title":"Remove non-functional support for rule privileges in GRANT/REVOKE","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["f0d112759"],"commit_groups":[["f0d112759"]],"commits":["f0d112759"],"cves":[],"db_id":"af948e47866b03a70707df9bf672d482","html":"\u003cp\u003eRemove column \u003ca href=\"/docs/18/view-pg-backend-memory-contexts.html\" title=\"53.5. pg_backend_memory_contexts\"\u003e\u003ccode\u003epg_backend_memory_contexts\u003c/code\u003e\u003c/a\u003e.\u003ccode\u003eparent\u003c/code\u003e (Melih Mutlu) \u003ca href=\"https://postgr.es/c/f0d112759\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is no longer needed since \u003ccode\u003epg_backend_memory_contexts\u003c/code\u003e.\u003ccode\u003epath\u003c/code\u003e was added.\u003c/p\u003e","id":"18.0-558a645d00b3f47b","identity_text":"Remove column pg_backend_memory_contexts.parent (Melih Mutlu) This is no longer needed since pg_backend_memory_contexts.path was added.","part":"migration","patch_ids":["91a2e8e9299edf53c184627b3cf053e7"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["f0d112759"],"source_entry_id":"18.0/migration/009","source_hash":"3348da5b519f14fb93b5b2c6235af20ce3d744fa55889ab04d496724498b7727","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"a4dc378426b8f016478b991a4d989f716af959a3b360b65d527ec7fd450acb6b","text":"Remove column pg_backend_memory_contexts.parent (Melih Mutlu) § This is no longer needed since pg_backend_memory_contexts.path was added.","title":"Remove column pg_backend_memory_contexts.parent","variants":[],"version":"18.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["32d3ed816","706cbed35","d9e03864b"],"commit_groups":[["32d3ed816"],["706cbed35"],["d9e03864b"]],"commits":["32d3ed816","706cbed35","d9e03864b"],"cves":[],"db_id":"b8c57d935d8b183f9ee20e7477f90abd","html":"\u003cp\u003eChange \u003ccode\u003epg_backend_memory_contexts\u003c/code\u003e.\u003ccode\u003elevel\u003c/code\u003e and \u003ca href=\"/docs/18/functions-admin.html#FUNCTIONS-ADMIN-SIGNAL-TABLE\" title=\"Table 9.96. Server Signaling Functions\"\u003e\u003ccode\u003epg_log_backend_memory_contexts()\u003c/code\u003e\u003c/a\u003e to be one-based (Melih Mutlu, Atsushi Torikoshi, David Rowley, Fujii Masao) \u003ca href=\"https://postgr.es/c/32d3ed816\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d9e03864b\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/706cbed35\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThese were previously zero-based.\u003c/p\u003e","id":"18.0-3bddcb1c02f74659","identity_text":"Change pg_backend_memory_contexts.level and pg_log_backend_memory_contexts() to be one-based (Melih Mutlu, Atsushi Torikoshi, David Rowley, Fujii Masao) These were previously zero-based.","part":"migration","patch_ids":["3d61500ab7649ba207c5b4742ce83946","845864cc388c5f840e08c3fdf9f3032a","eaa8db2e49e44f9880c123bf159cab42"],"related_changes":[{"db_id":"7ed5d279df474d7ce518a2cd605d091d","evidence":{"patch_ids":["eaa8db2e49e44f9880c123bf159cab42"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","title":"Add column pg_backend_memory_contexts.path to show memory context 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matching\"\u003epg_trgm\u003c/a\u003e extension. When upgrading such clusters using \u003ca href=\"/docs/18/pgupgrade.html\" title=\"pg_upgrade\"\u003e\u003cspan\u003e\u003cspan\u003epg_upgrade\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, it is recommended to reindex all indexes related to full-text search and \u003cspan\u003epg_trgm\u003c/span\u003e after the upgrade.\u003c/p\u003e","id":"18.0-63b962f0125472b6","identity_text":"Change full text search to use the default collation provider of the cluster to read configuration files and dictionaries, rather than always using libc (Peter Eisentraut) Clusters that default to non-libc collation providers (e.g., ICU, builtin) that behave differently than libc for characters processed by LC_CTYPE could observe changes in behavior of some full-text search functions, as well as the pgtrgm extension. When upgrading such clusters using pgupgrade , it is recommended to reindex all indexes related to full-text search and pg_trgm after the upgrade.","part":"migration","patch_ids":["d34589a0ca33552be8913ecb392dc365"],"related_changes":[],"relations":[],"section":"Compatibility","section_path":["Compatibility"],"source_commits":["fb1a18810f0"],"source_entry_id":"18.0/migration/011","source_hash":"e3ce56b4fc2a72cd171306a24ddd0b8daecb530f1409e98a57781871e32f9519","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","statement_hash":"0d016706c1da5d040bed5653360eaa27ed050c9172ff53f737e1221153008011","text":"Change full text search to use the default collation provider of the cluster to read configuration files and dictionaries, rather than always using libc (Peter Eisentraut) § Clusters that default to non-libc collation providers (e.g., ICU, builtin) that behave differently than libc for characters processed by LC_CTYPE could observe changes in behavior of some full-text search functions, as well as the pg_trgm extension. When upgrading such clusters using pg_upgrade, it is recommended to reindex all indexes related to full-text search and pg_trgm after the upgrade.","title":"Change full text search to use the default collation provider of the cluster to read configuration files and dictionaries, rather than always using libc","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["fc069a3a6"],"commit_groups":[["fc069a3a6"]],"commits":["fc069a3a6"],"cves":[],"db_id":"e93aac468afc7b983da5961bc89a6570","html":"\u003cp\u003eAutomatically remove some unnecessary table self-joins (Andrey Lepikhov, Alexander Kuzmenkov, Alexander Korotkov, Alena Rybakina) \u003ca href=\"https://postgr.es/c/fc069a3a6\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis optimization can be disabled using server variable \u003ca href=\"/docs/18/runtime-config-query.html#GUC-ENABLE-SELF-JOIN-ELIMINATION\"\u003eenable_self_join_elimination\u003c/a\u003e.\u003c/p\u003e","id":"18.0-680d6a94e6af24a0","identity_text":"Automatically remove some unnecessary table self-joins (Andrey Lepikhov, Alexander Kuzmenkov, Alexander Korotkov, Alena Rybakina) This optimization can be disabled using server variable guc-enable-self-join-elimination .","part":"changes","patch_ids":["f4668f24b918872b344ea179b57163cf"],"related_changes":[],"relations":[],"section":"Server / Optimizer","section_path":["Server","Optimizer"],"source_commits":["fc069a3a6"],"source_entry_id":"18.0/changes/001","source_hash":"40c3196e66530b1ad6c86357db78c6683c075a289ecc4fdc11ccdd15d42dafad","source_url":"/docs/release/18.0/#RELEASE-18-OPTIMIZER","statement_hash":"235c5aa78ae11057e82ffcaba18192f08d816b80c7a4abeb2ccab576de5173f7","text":"Automatically remove some unnecessary table self-joins (Andrey Lepikhov, Alexander Kuzmenkov, Alexander Korotkov, Alena Rybakina) § This optimization can be disabled using server variable enable_self_join_elimination.","title":"Automatically remove some unnecessary table self-joins","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["c0962a113"],"commit_groups":[["c0962a113"]],"commits":["c0962a113"],"cves":[],"db_id":"764cb613ec29b5df2b6d0d9987768083","html":"\u003cp\u003eConvert some \u003ca href=\"/docs/18/functions-comparisons.html#FUNCTIONS-COMPARISONS-IN-SCALAR\" title=\"9.25.1. IN\"\u003e\u003ccode\u003eIN (VALUES ...)\u003c/code\u003e\u003c/a\u003e to \u003ccode\u003ex = ANY ...\u003c/code\u003e for better optimizer statistics (Alena Rybakina, Andrei Lepikhov) \u003ca href=\"https://postgr.es/c/c0962a113\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-d841fa8566ba0e41","identity_text":"Convert some IN (VALUES ...) to x = ANY ... for better optimizer statistics (Alena Rybakina, Andrei Lepikhov)","part":"changes","patch_ids":["f3ef498af7484884fe0fe8d3179d0691"],"related_changes":[],"relations":[],"section":"Server / Optimizer","section_path":["Server","Optimizer"],"source_commits":["c0962a113"],"source_entry_id":"18.0/changes/002","source_hash":"4ba957892aa6172c1ba4d6e4d5242417072a25fa5fb19f26aa2cb93b5cdcea82","source_url":"/docs/release/18.0/#RELEASE-18-OPTIMIZER","statement_hash":"1994faf6d5d15f3e4a7dbff5aa1cd8f7f3f12341dfdeacdf6a2f1f84be69c14b","text":"Convert some IN (VALUES ...) to x = ANY ... for better optimizer statistics (Alena Rybakina, Andrei Lepikhov) §","title":"Convert some IN (VALUES ...) to x = ANY ... for better optimizer statistics","variants":[],"version":"18.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["ae4569161"],"commit_groups":[["ae4569161"]],"commits":["ae4569161"],"cves":[],"db_id":"2e05a47011ecefd0b4eb07547cc72835","html":"\u003cp\u003eAllow transforming \u003ca href=\"/docs/18/functions-logical.html\" title=\"9.1. Logical Operators\"\u003e\u003ccode\u003eOR\u003c/code\u003e\u003c/a\u003e-clauses to arrays for faster index processing (Alexander Korotkov, Andrey Lepikhov) \u003ca href=\"https://postgr.es/c/ae4569161\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-c98c0b36c2f7ee04","identity_text":"Allow transforming OR-clauses to arrays for faster index processing (Alexander Korotkov, Andrey Lepikhov)","part":"changes","patch_ids":["fb982918d31ae726b84a777e332b6884"],"related_changes":[],"relations":[],"section":"Server / Optimizer","section_path":["Server","Optimizer"],"source_commits":["ae4569161"],"source_entry_id":"18.0/changes/003","source_hash":"5fd9cfd78e09d29f7989ebf65e641d8464ca20ab208b3010f1927e2a5a38d21e","source_url":"/docs/release/18.0/#RELEASE-18-OPTIMIZER","statement_hash":"02c7be9bbfb909c1719246ac2948e31ec265c3b148e5d9b6ae59b607ffc7865e","text":"Allow transforming OR-clauses to arrays for faster index processing (Alexander 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aliases\u003c/a\u003e (Tom Lane, David Rowley) \u003ca href=\"https://postgr.es/c/52c707483\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/276279295\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/8d96f57d5\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/908a96861\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-3e2b4de2db16b12f","identity_text":"Speed up the processing of INTERSECT, EXCEPT, window aggregates, and view column aliases (Tom Lane, David Rowley)","part":"changes","patch_ids":["88fc8de0d114dd8d37c995d33aa2e424","c34e95d351102295e83eda2c0898ef4f","d6f6d3fc510fd75b0cd2a6ccb16caf21","e02121b5ec912ea613d75476b5d8da31"],"related_changes":[],"relations":[],"section":"Server / 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This was already true for non-deferred primary keys.\u003c/p\u003e","id":"18.0-723dd69ea02477f1","identity_text":"Ignore GROUP BY columns that are functionally dependent on other columns (Zhang Mingli, Jian He, David Rowley) If a GROUP BY clause includes all columns of a unique index, as well as other columns of the same table, those other columns are redundant and can be dropped from the grouping. This was already true for non-deferred primary keys.","part":"changes","patch_ids":["34cad2fc9ab6206a92e572686514a8b6"],"related_changes":[],"relations":[],"section":"Server / Optimizer","section_path":["Server","Optimizer"],"source_commits":["bd10ec529"],"source_entry_id":"18.0/changes/006","source_hash":"590fd20dfbdf85d87e1c14e1c4ca54d910d8ce015f220e7798d40fa268c94536","source_url":"/docs/release/18.0/#RELEASE-18-OPTIMIZER","statement_hash":"f79bb17c14f5da30c295cc7cf55f487a682d1912a3cd315fb8c06f09d6f9fd62","text":"Ignore GROUP BY columns that are functionally dependent on other columns (Zhang Mingli, Jian He, David Rowley) § If a GROUP BY clause includes all columns of a unique index, as well as other columns of the same table, those other columns are redundant and can be dropped from the grouping. 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The new system view pg_aios shows the file handles being used for asynchronous I/O.","part":"changes","patch_ids":["00a9c4d43ad5f440c73f46761173fb9b","0dbc83e3df4c59c2ca262ef445628a22","27d018309a2572d361015743ee98324a","4d8f6ef76cf84da9e8ef4cb69e686748","4f97e5094bf3ab32f794535fbb774657","69011e9c5887d0368badf9df4b6cdb59","6fe75ee49c9ddb6673fc72c6316a6cac","935377894ec40d13d8a0a722ff34d52e","9e38c5e8ef550e2076bcc2e8ab7b4e16","b7142d9ad8162a459c188b676c6a8396","b78c6771a059bc73ee21df19448cd72b"],"related_changes":[],"relations":[],"section":"Server / General Performance","section_path":["Server","General Performance"],"source_commits":["02844012b","047cba7fa","06fb5612c","10f664684","12ce89fd0","247ce06b8","2a5e709e7","50cb7505b","55b454d0e","c325a7633","da7226993"],"source_entry_id":"18.0/changes/020","source_hash":"fdd8656bbf1cf11f97d6fd57102a43e430a4b1b8d8c4d686a0a5ea63a4b0770c","source_url":"/docs/release/18.0/#RELEASE-18-PERFORMANCE","statement_hash":"b96b1508b7345c107e04bf5e3067b8f434fdad4aab6e74bb8cac2ed82dad1d3c","text":"Add an asynchronous I/O subsystem (Andres Freund, Thomas Munro, Nazir Bilal Yavuz, Melanie Plageman) § § § § § § § § § § § This feature allows backends to queue multiple read requests, which allows for more efficient sequential scans, bitmap heap scans, vacuums, etc. This is enabled by server variable io_method, with server variables io_combine_limit and io_max_combine_limit added to control it. This also enables effective_io_concurrency and maintenance_io_concurrency values greater than zero for systems without fadvise() support. 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The aggressiveness of this can be controlled by server variable and per-table setting \u003ca href=\"/docs/18/runtime-config-vacuum.html#GUC-VACUUM-MAX-EAGER-FREEZE-FAILURE-RATE\"\u003evacuum_max_eager_freeze_failure_rate\u003c/a\u003e. Previously vacuum never processed all-visible pages until freezing was required.\u003c/p\u003e","id":"18.0-9d04d053554c175a","identity_text":"Allow normal vacuums to freeze some pages, even though they are all-visible (Melanie Plageman) This reduces the overhead of later full-relation freezing. The aggressiveness of this can be controlled by server variable and per-table setting guc-vacuum-max-eager-freeze-failure-rate . Previously vacuum never processed all-visible pages until freezing was required.","part":"changes","patch_ids":["67ea98ee74614c1e13cce028969b4f44","d3f807b22dffb17b1216f302711474dd"],"related_changes":[],"relations":[],"section":"Server / General Performance","section_path":["Server","General Performance"],"source_commits":["052026c9b","06eae9e62"],"source_entry_id":"18.0/changes/023","source_hash":"067908e36f6001abfd9b89898d6468091c7c408aba70fd6644ef0e6e78945b17","source_url":"/docs/release/18.0/#RELEASE-18-PERFORMANCE","statement_hash":"1d01a6afb8bdd666bc7b3013928540e3f748fdac185055067dcbcfcb19976f2d","text":"Allow normal vacuums to freeze some pages, even though they are all-visible (Melanie Plageman) § § This reduces the overhead of later full-relation freezing. The aggressiveness of this can be controlled by server variable and per-table setting vacuum_max_eager_freeze_failure_rate. Previously vacuum never processed all-visible pages until freezing was required.","title":"Allow normal vacuums to freeze some pages, even though they are all-visible","variants":[],"version":"18.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["0164a0f9e"],"commit_groups":[["0164a0f9e"]],"commits":["0164a0f9e"],"cves":[],"db_id":"d1bf74ed1cb4e3fbacc9001855d15f16","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-vacuum.html#GUC-VACUUM-TRUNCATE\"\u003evacuum_truncate\u003c/a\u003e to control file truncation during \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e (Nathan Bossart, Gurjeet Singh) \u003ca href=\"https://postgr.es/c/0164a0f9e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eA storage-level parameter with the same name and behavior already existed.\u003c/p\u003e","id":"18.0-f532d30d19208618","identity_text":"Add server variable 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VACUUM","variants":[],"version":"18.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["cc6be07eb","ff79b5b2a"],"commit_groups":[["cc6be07eb"],["ff79b5b2a"]],"commits":["cc6be07eb","ff79b5b2a"],"cves":[],"db_id":"426d3063330d1605a0f8dada895702c7","html":"\u003cp\u003eIncrease server variables \u003ca href=\"/docs/18/runtime-config-resource.html#GUC-EFFECTIVE-IO-CONCURRENCY\"\u003eeffective_io_concurrency\u003c/a\u003e's and \u003ca href=\"/docs/18/runtime-config-resource.html#GUC-MAINTENANCE-IO-CONCURRENCY\"\u003emaintenance_io_concurrency\u003c/a\u003e's default values to 16 (Melanie Plageman) \u003ca href=\"https://postgr.es/c/ff79b5b2a\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/cc6be07eb\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis more accurately reflects modern hardware.\u003c/p\u003e","id":"18.0-6a0f68c7a6c59848","identity_text":"Increase server variables guc-effective-io-concurrency 's and 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stages","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["3516ea768"],"commit_groups":[["3516ea768"]],"commits":["3516ea768"],"cves":[],"db_id":"ec6128df26d217a2eecd0111f2e4d0a0","html":"\u003cp\u003eAdd \u003ca href=\"/docs/18/runtime-config-logging.html#GUC-LOG-LINE-PREFIX\"\u003elog_line_prefix\u003c/a\u003e escape \u003ccode\u003e%L\u003c/code\u003e to output the client \u003cacronym\u003eIP\u003c/acronym\u003e address (Greg Sabino Mullane) \u003ca href=\"https://postgr.es/c/3516ea768\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-929b539b3ad17261","identity_text":"Add guc-log-line-prefix escape %L to output the client IP address (Greg Sabino Mullane)","part":"changes","patch_ids":["245982fa5f97063e1932c06fd291a313"],"related_changes":[],"relations":[],"section":"Server / 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\u003ca href=\"https://postgr.es/c/6d376c3b0\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/73bdcfab3\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eSpecifically it reports \u003ca href=\"/docs/18/sql-select.html#SQL-FOR-UPDATE-SHARE\" title=\"The Locking Clause\"\u003e\u003ccode\u003eSELECT ... NOWAIT\u003c/code\u003e\u003c/a\u003e lock failures.\u003c/p\u003e","id":"18.0-4edb641e0b8b7969","identity_text":"Add server variable guc-log-lock-failures to log lock acquisition failures (Yuki Seino, Fujii Masao) Specifically it reports SELECT ... NOWAIT lock failures.","part":"changes","patch_ids":["b077959c977125e9f3753f321bc477a3","e967c5c76962ab8a50984a559a44af22"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["6d376c3b0","73bdcfab3"],"source_entry_id":"18.0/changes/029","source_hash":"a88dff59604d880435132b5b633e2eb67a03d39010449f6c677e07aa3e5c5da7","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"86481d735160d1d7650fa217441fd2d70ed271d146fb44fd372e52c1bbfa1210","text":"Add server variable log_lock_failures to log lock acquisition failures (Yuki Seino, Fujii Masao) § § Specifically it reports SELECT ... NOWAIT lock failures.","title":"Add server variable log_lock_failures to log lock acquisition failures","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["30a6ed0ce"],"commit_groups":[["30a6ed0ce"]],"commits":["30a6ed0ce"],"cves":[],"db_id":"9671d2c26d28bca864a1d36f60376f71","html":"\u003cp\u003eModify \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-PG-STAT-ALL-TABLES-VIEW\" title=\"27.2.19. pg_stat_all_tables\"\u003e\u003ccode\u003epg_stat_all_tables\u003c/code\u003e\u003c/a\u003e and its variants to report the time spent in \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003cspan\u003eANALYZE\u003c/span\u003e\u003c/a\u003e, and their \u003ca href=\"/docs/18/routine-vacuuming.html#AUTOVACUUM\" title=\"24.1.6. The Autovacuum Daemon\"\u003eautomatic\u003c/a\u003e variants (Sami Imseih) \u003ca href=\"https://postgr.es/c/30a6ed0ce\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe new columns are \u003ccode\u003etotal_vacuum_time\u003c/code\u003e, \u003ccode\u003etotal_autovacuum_time\u003c/code\u003e, \u003ccode\u003etotal_analyze_time\u003c/code\u003e, and \u003ccode\u003etotal_autoanalyze_time\u003c/code\u003e.\u003c/p\u003e","id":"18.0-097f657303fd725e","identity_text":"Modify pg_stat_all_tables and its variants to report the time spent in sql-vacuum , sql-analyze , and their automatic variants (Sami Imseih) The new columns are total_vacuum_time, total_autovacuum_time, total_analyze_time, and total_autoanalyze_time.","part":"changes","patch_ids":["c2b3c6594a2d8e4e4efcb86b21ade10b"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["30a6ed0ce"],"source_entry_id":"18.0/changes/030","source_hash":"2092521e84d65496371a602695e86f1b45f3598fa64282cc8e1cb2df767cc998","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"904912b4331b059b0493e73dfb45564c4e6f06521c6face3aed12e28924a3bde","text":"Modify pg_stat_all_tables and its variants to report the time spent in VACUUM, ANALYZE, and their automatic variants (Sami Imseih) § The new columns are total_vacuum_time, total_autovacuum_time, total_analyze_time, and total_autoanalyze_time.","title":"Modify pg_stat_all_tables and its variants to report the time spent in VACUUM, ANALYZE, and their automatic variants","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["7720082ae","bb8dff999"],"commit_groups":[["7720082ae"],["bb8dff999"]],"commits":["7720082ae","bb8dff999"],"cves":[],"db_id":"bea9d94f702a252ba6381f744ff75946","html":"\u003cp\u003eAdd delay time reporting to \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003cspan\u003eANALYZE\u003c/span\u003e\u003c/a\u003e (Bertrand Drouvot, Nathan Bossart) \u003ca href=\"https://postgr.es/c/bb8dff999\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/7720082ae\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis information appears in the server log, the system views \u003ca href=\"/docs/18/progress-reporting.html#VACUUM-PROGRESS-REPORTING\" title=\"27.4.5. VACUUM Progress Reporting\"\u003e\u003ccode\u003epg_stat_progress_vacuum\u003c/code\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/progress-reporting.html#PG-STAT-PROGRESS-ANALYZE-VIEW\" title=\"Table 27.38. pg_stat_progress_analyze View\"\u003e\u003ccode\u003epg_stat_progress_analyze\u003c/code\u003e\u003c/a\u003e, and the output of \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003cspan\u003eANALYZE\u003c/span\u003e\u003c/a\u003e when in \u003ccode\u003eVERBOSE\u003c/code\u003e mode; tracking must be enabled with the server variable \u003ca href=\"/docs/18/runtime-config-statistics.html#GUC-TRACK-COST-DELAY-TIMING\"\u003etrack_cost_delay_timing\u003c/a\u003e.\u003c/p\u003e","id":"18.0-a8b19ee3c2ebd809","identity_text":"Add delay time reporting to sql-vacuum and sql-analyze (Bertrand Drouvot, Nathan Bossart) This information appears in the server log, the system views pg_stat_progress_vacuum and pg_stat_progress_analyze, and the output of sql-vacuum and sql-analyze when in VERBOSE mode; tracking must be enabled with the server variable guc-track-cost-delay-timing .","part":"changes","patch_ids":["37076735ba20e78cc49b9708ebdff26a","dcc774daa71cb4ef3040110ad61f951b"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["7720082ae","bb8dff999"],"source_entry_id":"18.0/changes/031","source_hash":"c3b6092e0b557183c88361a516e8cd0d9afc4df8b8705c21459ed505607217f1","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"fa996a38bca92758da7743b591fad3f548bcd94541d767a9356ea8efbc21a20c","text":"Add delay time reporting to VACUUM and ANALYZE (Bertrand Drouvot, Nathan Bossart) § § This information appears in the server log, the system views pg_stat_progress_vacuum and pg_stat_progress_analyze, and the output of VACUUM and ANALYZE when in VERBOSE mode; tracking must be enabled with the server variable track_cost_delay_timing.","title":"Add delay time reporting to VACUUM and ANALYZE","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4c1b4cdb8","bb7775234"],"commit_groups":[["4c1b4cdb8"],["bb7775234"]],"commits":["4c1b4cdb8","bb7775234"],"cves":[],"db_id":"89d1e2f5040630b5e6d5d285a3183e17","html":"\u003cp\u003eAdd \u003cacronym\u003eWAL\u003c/acronym\u003e, \u003cacronym\u003eCPU\u003c/acronym\u003e, and average read statistics output to \u003ccode\u003eANALYZE VERBOSE\u003c/code\u003e (Anthonin Bonnefoy) \u003ca href=\"https://postgr.es/c/4c1b4cdb8\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/bb7775234\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-3840c3b2fc9eee99","identity_text":"Add WAL, CPU, and average read statistics output to ANALYZE VERBOSE (Anthonin Bonnefoy)","part":"changes","patch_ids":["b3469919d266e3cb5e6a7fd510fd2e77","e8ed2cc2f82da83716586c11bc4c436b"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["4c1b4cdb8","bb7775234"],"source_entry_id":"18.0/changes/032","source_hash":"1a2dcb5dd39a88693da8ffce12adc58b376cbc99d61e7b665edc8b7a8057486c","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"0ba8f5189b2a89deba8c0398b4327b4ea28a27b30cfe526849d9f7dd081e54d5","text":"Add WAL, CPU, and average read statistics output to ANALYZE VERBOSE (Anthonin Bonnefoy) § §","title":"Add WAL, CPU, and average read statistics output to ANALYZE VERBOSE","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["6a8a7ce47"],"commit_groups":[["6a8a7ce47"]],"commits":["6a8a7ce47"],"cves":[],"db_id":"74713f8ae6d85f90e89e18ef3dc6a21d","html":"\u003cp\u003eAdd full \u003cacronym\u003eWAL\u003c/acronym\u003e buffer count to \u003ccode\u003eVACUUM\u003c/code\u003e/\u003ccode\u003eANALYZE (VERBOSE)\u003c/code\u003e and autovacuum log output (Bertrand Drouvot) \u003ca href=\"https://postgr.es/c/6a8a7ce47\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-4b700ed68adb6f38","identity_text":"Add full WAL buffer count to VACUUM/ANALYZE (VERBOSE) and autovacuum log output (Bertrand Drouvot)","part":"changes","patch_ids":["72511d93ea1587fdaf73eba50b91d1d0"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["6a8a7ce47"],"source_entry_id":"18.0/changes/033","source_hash":"c9894dd7993ceae90219fd40d6eb2b8e99c64032b4b6c0c567537ce9d289b65d","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"0774d5388d6c2acf1684333e3113f73e85981e8a73cea3b0ab9ee148dc6b388f","text":"Add full WAL buffer count to VACUUM/ANALYZE (VERBOSE) and autovacuum log output (Bertrand Drouvot) §","title":"Add full WAL buffer count to VACUUM/ANALYZE (VERBOSE) and autovacuum log output","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["3f1db99bf","9aea73fc6"],"commit_groups":[["3f1db99bf"],["9aea73fc6"]],"commits":["3f1db99bf","9aea73fc6"],"cves":[],"db_id":"17e6c76925cfbd574a9ae5f72831fa69","html":"\u003cp\u003eAdd per-backend I/O statistics reporting (Bertrand Drouvot) \u003ca href=\"https://postgr.es/c/9aea73fc6\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/3f1db99bf\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe statistics are accessed via \u003ca href=\"/docs/18/monitoring-stats.html#PG-STAT-GET-BACKEND-IO\"\u003e\u003ccode\u003epg_stat_get_backend_io()\u003c/code\u003e\u003c/a\u003e. Per-backend I/O statistics can be cleared via \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-STATS-FUNCS-TABLE\" title=\"Table 27.36. Additional Statistics Functions\"\u003e\u003ccode\u003epg_stat_reset_backend_stats()\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e","id":"18.0-e35712a71ba201d3","identity_text":"Add per-backend I/O statistics reporting (Bertrand Drouvot) The statistics are accessed via pg_stat_get_backend_io(). Per-backend I/O statistics can be cleared via pg_stat_reset_backend_stats().","part":"changes","patch_ids":["5322e6c9c9cd04d7bf3ea661542be001","a3ee8fafbb9811b8cda82e07e73283f9"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["3f1db99bf","9aea73fc6"],"source_entry_id":"18.0/changes/034","source_hash":"9e1631c53568af593ee7bced63f3b724a0ba10e31a2fd9ed1c4025ad9a38fae7","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"caae69fd5330c7bec4af68b84e21c7fc7e7a5d29f7fae594f65a92e7a22165c1","text":"Add per-backend I/O statistics reporting (Bertrand Drouvot) § § The statistics are accessed via pg_stat_get_backend_io(). Per-backend I/O statistics can be cleared via pg_stat_reset_backend_stats().","title":"Add per-backend I/O statistics reporting","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["f92c854cf"],"commit_groups":[["f92c854cf"]],"commits":["f92c854cf"],"cves":[],"db_id":"aa7e8fb55aec7ab4c8224a57cb360b58","html":"\u003cp\u003eAdd \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-PG-STAT-IO-VIEW\" title=\"27.2.13. pg_stat_io\"\u003e\u003ccode\u003epg_stat_io\u003c/code\u003e\u003c/a\u003e columns to report I/O activity in bytes (Nazir Bilal Yavuz) \u003ca href=\"https://postgr.es/c/f92c854cf\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe new columns are \u003ccode\u003eread_bytes\u003c/code\u003e, \u003ccode\u003ewrite_bytes\u003c/code\u003e, and \u003ccode\u003eextend_bytes\u003c/code\u003e. The \u003ccode\u003eop_bytes\u003c/code\u003e column, which always equaled \u003ca href=\"/docs/18/runtime-config-preset.html#GUC-BLOCK-SIZE\"\u003e\u003ccode\u003eBLCKSZ\u003c/code\u003e\u003c/a\u003e, has been removed.\u003c/p\u003e","id":"18.0-0e96d87fb9dc0733","identity_text":"Add pg_stat_io columns to report I/O activity in bytes (Nazir Bilal Yavuz) The new columns are read_bytes, write_bytes, and extend_bytes. The op_bytes column, which always equaled BLCKSZ, has been removed.","part":"changes","patch_ids":["a311e5aff8043d8480a656b9295d03b6"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["f92c854cf"],"source_entry_id":"18.0/changes/035","source_hash":"97f3dadc86ebdf37ec36e4e556f7f81273a6d2f21452bea7c88377d1a3c561ae","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"2e8238782eda3f1431802fe0e4f5c982fab48d2ee3dd4a701ea3842da4484eb0","text":"Add pg_stat_io columns to report I/O activity in bytes (Nazir Bilal Yavuz) § The new columns are read_bytes, write_bytes, and extend_bytes. The op_bytes column, which always equaled BLCKSZ, has been removed.","title":"Add pg_stat_io columns to report I/O activity in bytes","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4538bd3f1","7f7f324eb","a051e71e2"],"commit_groups":[["4538bd3f1"],["7f7f324eb"],["a051e71e2"]],"commits":["4538bd3f1","7f7f324eb","a051e71e2"],"cves":[],"db_id":"4e8a04b21c8fb51fcf294e0a57d8462f","html":"\u003cp\u003eAdd \u003cacronym\u003eWAL\u003c/acronym\u003e I/O activity rows to \u003ccode\u003epg_stat_io\u003c/code\u003e (Nazir Bilal Yavuz, Bertrand Drouvot, Michael Paquier) \u003ca href=\"https://postgr.es/c/a051e71e2\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/4538bd3f1\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/7f7f324eb\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis includes \u003cacronym\u003eWAL\u003c/acronym\u003e receiver activity and a wait event for such writes.\u003c/p\u003e","id":"18.0-3b56014060aade39","identity_text":"Add WAL I/O activity rows to pg_stat_io (Nazir Bilal Yavuz, Bertrand Drouvot, Michael Paquier) This includes WAL receiver activity and a wait event for such writes.","part":"changes","patch_ids":["0abab9a405c724624eabd4509d63171e","3d509df32980788958c9572c50adb4fd","bef53f830f1ba9f3cda0cc8ff4ed91e6"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["4538bd3f1","7f7f324eb","a051e71e2"],"source_entry_id":"18.0/changes/036","source_hash":"1073fae0e1addc89e2446fa37b2acba1f913d9723e1c4429053ee3268c3f10de","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"c5453439738584b897b3afc314105f41051f5aa95d24752734738916b65af097","text":"Add WAL I/O activity rows to pg_stat_io (Nazir Bilal Yavuz, Bertrand Drouvot, Michael Paquier) § § § This includes WAL receiver activity and a wait event for such writes.","title":"Add WAL I/O activity rows to pg_stat_io","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["6c349d83b"],"commit_groups":[["6c349d83b"]],"commits":["6c349d83b"],"cves":[],"db_id":"c17f05a65724a6039aa7e121e771aa10","html":"\u003cp\u003eChange server variable \u003ca href=\"/docs/18/runtime-config-statistics.html#GUC-TRACK-WAL-IO-TIMING\"\u003etrack_wal_io_timing\u003c/a\u003e to control tracking \u003cacronym\u003eWAL\u003c/acronym\u003e timing in \u003ccode\u003epg_stat_io\u003c/code\u003e instead of \u003ca href=\"/docs/18/monitoring-stats.html#PG-STAT-WAL-VIEW\" title=\"Table 27.26. pg_stat_wal View\"\u003e\u003ccode\u003epg_stat_wal\u003c/code\u003e\u003c/a\u003e (Bertrand Drouvot) \u003ca href=\"https://postgr.es/c/6c349d83b\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-6c1a9bdb1bd7fe74","identity_text":"Change server variable guc-track-wal-io-timing to control tracking WAL timing in pg_stat_io instead of pg_stat_wal (Bertrand Drouvot)","part":"changes","patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"related_changes":[{"db_id":"d0fcc1877409f4702f061ff62c4a5fe9","evidence":{"ambiguous_patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","title":"Remove read/sync columns from pg_stat_wal","url":"/docs/compare/?release=18.0#18.0-202a628b223b3b6a","version":"18.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"same_day":true},"rule":2,"target":"d0fcc1877409f4702f061ff62c4a5fe9","type":"related"}],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["6c349d83b"],"source_entry_id":"18.0/changes/037","source_hash":"d1231847afefe1d4d74417eeedaf338d2e73d369b33a3039d07def9f38206fd7","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"2f7ae7e2bcef0b17495e3f738ab823ef4fa3a7ff6d607334d8ca8141298e26c2","text":"Change server variable track_wal_io_timing to control tracking WAL timing in pg_stat_io instead of pg_stat_wal (Bertrand Drouvot) §","title":"Change server variable track_wal_io_timing to control tracking WAL timing in pg_stat_io instead of pg_stat_wal","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2421e9a51","6c349d83b"],"commit_groups":[["2421e9a51"],["6c349d83b"]],"commits":["2421e9a51","6c349d83b"],"cves":[],"db_id":"d0fcc1877409f4702f061ff62c4a5fe9","html":"\u003cp\u003eRemove read/sync columns from \u003ccode\u003epg_stat_wal\u003c/code\u003e (Bertrand Drouvot) \u003ca href=\"https://postgr.es/c/2421e9a51\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/6c349d83b\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis removes columns \u003ccode\u003ewal_write\u003c/code\u003e, \u003ccode\u003ewal_sync\u003c/code\u003e, \u003ccode\u003ewal_write_time\u003c/code\u003e, and \u003ccode\u003ewal_sync_time\u003c/code\u003e.\u003c/p\u003e","id":"18.0-202a628b223b3b6a","identity_text":"Remove read/sync columns from pg_stat_wal (Bertrand Drouvot) This removes columns wal_write, wal_sync, wal_write_time, and wal_sync_time.","part":"changes","patch_ids":["08fb6ea64d401512c5db7dbb4b9241af","234c05d3f38c109ec2b38a93d6ac0806"],"related_changes":[{"db_id":"c17f05a65724a6039aa7e121e771aa10","evidence":{"ambiguous_patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","title":"Change server variable track_wal_io_timing to control tracking WAL timing in pg_stat_io instead of pg_stat_wal","url":"/docs/compare/?release=18.0#18.0-6c1a9bdb1bd7fe74","version":"18.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"patch_ids":["08fb6ea64d401512c5db7dbb4b9241af"],"same_day":true},"rule":2,"target":"c17f05a65724a6039aa7e121e771aa10","type":"related"}],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["2421e9a51","6c349d83b"],"source_entry_id":"18.0/changes/038","source_hash":"bdbb6b727ae2ec12ad3bc55377abbd441295c2aa83487fdcb3a37f0805a08762","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"7b33f152d6e61381fe6be52ffbdfe42a5da00b89105becd3eb6f9de24b2b319c","text":"Remove read/sync columns from pg_stat_wal (Bertrand Drouvot) § § This removes columns wal_write, wal_sync, wal_write_time, and wal_sync_time.","title":"Remove read/sync columns from pg_stat_wal","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["76def4cdd"],"commit_groups":[["76def4cdd"]],"commits":["76def4cdd"],"cves":[],"db_id":"062885cb962fb66b290bfca5b7d287a1","html":"\u003cp\u003eAdd function \u003ca href=\"/docs/18/monitoring-stats.html#PG-STAT-GET-BACKEND-WAL\"\u003e\u003ccode\u003epg_stat_get_backend_wal()\u003c/code\u003e\u003c/a\u003e to return per-backend \u003cacronym\u003eWAL\u003c/acronym\u003e statistics (Bertrand Drouvot) \u003ca href=\"https://postgr.es/c/76def4cdd\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003ePer-backend \u003cacronym\u003eWAL\u003c/acronym\u003e statistics can be cleared via \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-STATS-FUNCS-TABLE\" title=\"Table 27.36. Additional Statistics Functions\"\u003e\u003ccode\u003epg_stat_reset_backend_stats()\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e","id":"18.0-634291e59601ff91","identity_text":"Add function pg_stat_get_backend_wal() to return per-backend WAL statistics (Bertrand Drouvot) Per-backend WAL statistics can be cleared via pg_stat_reset_backend_stats().","part":"changes","patch_ids":["4e24f0fbea0bfb8adf57d60deed85cbe"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["76def4cdd"],"source_entry_id":"18.0/changes/039","source_hash":"242f296d8a20316ed2428d9cc9afa62a44163367fa7e0849e047ee688cfea11f","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"b74d0e38b049943fe62ccf7336ca21fd4a9fd9d020f9b94347272b09da3db5af","text":"Add function pg_stat_get_backend_wal() to return per-backend WAL statistics (Bertrand Drouvot) § Per-backend WAL statistics can be cleared via pg_stat_reset_backend_stats().","title":"Add function pg_stat_get_backend_wal() to return per-backend WAL statistics","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4e1fad378"],"commit_groups":[["4e1fad378"]],"commits":["4e1fad378"],"cves":[],"db_id":"b9a68e06cac60dffdbd6bf6eb05a794e","html":"\u003cp\u003eAdd function \u003ca href=\"/docs/18/functions-admin.html#FUNCTIONS-ADMIN-GENFILE-TABLE\" title=\"Table 9.108. Generic File Access Functions\"\u003e\u003ccode\u003epg_ls_summariesdir()\u003c/code\u003e\u003c/a\u003e to specifically list the contents of \u003ca href=\"/docs/18/storage-file-layout.html\" title=\"66.1. Database File Layout\"\u003e\u003ccode\u003ePGDATA\u003c/code\u003e\u003c/a\u003e/\u003ca href=\"/docs/18/runtime-config-wal.html#GUC-WAL-SUMMARY-KEEP-TIME\"\u003e\u003ccode\u003epg_wal/summaries\u003c/code\u003e\u003c/a\u003e (Yushi Ogiwara) \u003ca href=\"https://postgr.es/c/4e1fad378\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-b4a386c2e779722f","identity_text":"Add function pg_ls_summariesdir() to specifically list the contents of PGDATA/pg_wal/summaries (Yushi Ogiwara)","part":"changes","patch_ids":["9fe64e076fe5fc2c95c8fa5ba6f057ef"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["4e1fad378"],"source_entry_id":"18.0/changes/040","source_hash":"d6ccff9c03df46b05091a267c2cb8b7b5535dedef74c43578dfaf0e9d97bb59f","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"09d2ba0760f22482dda1728ad727396c99942f333bb0a66ba64ce98dfb4017c7","text":"Add function pg_ls_summariesdir() to specifically list the contents of PGDATA/pg_wal/summaries (Yushi Ogiwara) §","title":"Add function pg_ls_summariesdir() to specifically list the contents of PGDATA/pg_wal/summaries","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["559efce1d"],"commit_groups":[["559efce1d"]],"commits":["559efce1d"],"cves":[],"db_id":"066d4a943702f3b2e401f4e7aae7deab","html":"\u003cp\u003eAdd column \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-PG-STAT-CHECKPOINTER-VIEW\" title=\"27.2.15. pg_stat_checkpointer\"\u003e\u003ccode\u003epg_stat_checkpointer\u003c/code\u003e\u003c/a\u003e.\u003ccode\u003enum_done\u003c/code\u003e to report the number of completed checkpoints (Anton A. Melnikov) \u003ca href=\"https://postgr.es/c/559efce1d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eColumns \u003ccode\u003enum_timed\u003c/code\u003e and \u003ccode\u003enum_requested\u003c/code\u003e count both completed and skipped checkpoints.\u003c/p\u003e","id":"18.0-2ab3ba61126a6e6f","identity_text":"Add column pg_stat_checkpointer.num_done to report the number of completed checkpoints (Anton A. Melnikov) Columns num_timed and num_requested count both completed and skipped checkpoints.","part":"changes","patch_ids":["c949e573ffaba7a2a8d27d7162de1f0b"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["559efce1d"],"source_entry_id":"18.0/changes/041","source_hash":"b0f52803f5eace4dd8a6f300af475cd3f6d7567d9e52472b06a815ec78abd658","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"68a8924f2cff332cb007ffe69e69b6126cb2165fc11751dbddcea61dcddacc3a","text":"Add column pg_stat_checkpointer.num_done to report the number of completed checkpoints (Anton A. Melnikov) § Columns num_timed and num_requested count both completed and skipped checkpoints.","title":"Add column pg_stat_checkpointer.num_done to report the number of completed checkpoints","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["17cc5f666"],"commit_groups":[["17cc5f666"]],"commits":["17cc5f666"],"cves":[],"db_id":"c727bac201403ee5787ce91519d78b8f","html":"\u003cp\u003eAdd column \u003ccode\u003epg_stat_checkpointer\u003c/code\u003e.\u003ccode\u003eslru_written\u003c/code\u003e to report \u003cacronym\u003eSLRU\u003c/acronym\u003e buffers written (Nitin Jadhav) \u003ca href=\"https://postgr.es/c/17cc5f666\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eAlso, modify the checkpoint server log message to report separate shared buffer and \u003cacronym\u003eSLRU\u003c/acronym\u003e buffer values.\u003c/p\u003e","id":"18.0-61ce84aa748564e5","identity_text":"Add column pg_stat_checkpointer.slru_written to report SLRU buffers written (Nitin Jadhav) Also, modify the checkpoint server log message to report separate shared buffer and SLRU buffer values.","part":"changes","patch_ids":["d6837b0ccfa7bed8d3ef332bff20c386"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["17cc5f666"],"source_entry_id":"18.0/changes/042","source_hash":"e3cd14d094f854569dcf0a7ec616f689d1baac8a113db529f691cfd28c517c08","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"d75f1cff8692d2b125311380a9eb939eed72a5eec22bed4041dad77e8aed16e7","text":"Add column pg_stat_checkpointer.slru_written to report SLRU buffers written (Nitin Jadhav) § Also, modify the checkpoint server log message to report separate shared buffer and SLRU buffer values.","title":"Add column pg_stat_checkpointer.slru_written to report SLRU buffers written","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["e7a9496de"],"commit_groups":[["e7a9496de"]],"commits":["e7a9496de"],"cves":[],"db_id":"dfce089734ba453a8b429200599d48f4","html":"\u003cp\u003eAdd columns to \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-PG-STAT-DATABASE-VIEW\" title=\"27.2.17. pg_stat_database\"\u003e\u003ccode\u003epg_stat_database\u003c/code\u003e\u003c/a\u003e to report parallel worker activity (Benoit Lobréau) \u003ca href=\"https://postgr.es/c/e7a9496de\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe new columns are \u003ccode\u003eparallel_workers_to_launch\u003c/code\u003e and \u003ccode\u003eparallel_workers_launched\u003c/code\u003e.\u003c/p\u003e","id":"18.0-50beb09b38031570","identity_text":"Add columns to pg_stat_database to report parallel worker activity (Benoit Lobréau) The new columns are parallel_workers_to_launch and parallel_workers_launched.","part":"changes","patch_ids":["537ec52eb436dc276f2922a0463b3fde"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["e7a9496de"],"source_entry_id":"18.0/changes/043","source_hash":"eb7a9a2fcda5d6b360e1516a8ecfca3e10034c0773a50d5480dd72cbbe41a363","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"2a16728a2a22066209d758116c71b02d570e00dc834d54006e01a8747ab449a3","text":"Add columns to pg_stat_database to report parallel worker activity (Benoit Lobréau) § The new columns are parallel_workers_to_launch and parallel_workers_launched.","title":"Add columns to pg_stat_database to report parallel worker activity","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["62d712ecf","9fbd53dea","c2da1a5d6"],"commit_groups":[["62d712ecf"],["9fbd53dea"],["c2da1a5d6"]],"commits":["62d712ecf","9fbd53dea","c2da1a5d6"],"cves":[],"db_id":"602391884e0f9956bc8189e3df9fa46c","html":"\u003cp\u003eHave \u003ca href=\"/docs/18/runtime-config-statistics.html#GUC-COMPUTE-QUERY-ID\"\u003equery id\u003c/a\u003e computation of constant lists consider only the first and last constants (Dmitry Dolgov, Sami Imseih) \u003ca href=\"https://postgr.es/c/62d712ecf\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/9fbd53dea\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/c2da1a5d6\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eJumbling is used by \u003ca href=\"/docs/18/pgstatstatements.html\" title=\"F.32. pg_stat_statements — track statistics of SQL planning and execution\"\u003epg_stat_statements\u003c/a\u003e.\u003c/p\u003e","id":"18.0-e0b7fcc669e7cd20","identity_text":"Have query id computation of constant lists consider only the first and last constants (Dmitry Dolgov, Sami Imseih) Jumbling is used by pgstatstatements .","part":"changes","patch_ids":["5788e402f9a32d0839d25eda04d2e777","892e3023e3eb75d6d37898823ef6e17d","b602290e314da4eb2c893c183d542ea2"],"related_changes":[],"relations":[],"section":"Server / Monitoring","section_path":["Server","Monitoring"],"source_commits":["62d712ecf","9fbd53dea","c2da1a5d6"],"source_entry_id":"18.0/changes/044","source_hash":"2cf9373f5b7eddab9fd5ff38dada6cd3257b8f28a837aed595560e11f200a37d","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"15594176dafd96eadc8774ee3c07b03bfac584e26aab1114deaf08975c0d6fa7","text":"Have query id computation of constant lists consider only the first and last constants (Dmitry Dolgov, Sami Imseih) § § § Jumbling is used by pg_stat_statements.","title":"Have query id computation of constant lists consider only the first and last constants","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["787514b30"],"commit_groups":[["787514b30"]],"commits":["787514b30"],"cves":[],"db_id":"b3b7d2a11d4d31f38f5974d4bc93b3e3","html":"\u003cp\u003eAdjust query id computations to group together queries using the same relation name (Michael Paquier, Sami Imseih) \u003ca href=\"https://postgr.es/c/787514b30\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is true even if the tables in different schemas have different column names.\u003c/p\u003e","id":"18.0-4bd7c5c5ceccdfa2","identity_text":"Adjust query id computations to group together queries using the same relation name (Michael Paquier, Sami Imseih) This is true even if the tables in different schemas have different column 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Monitoring","section_path":["Server","Monitoring"],"source_commits":["32d3ed816"],"source_entry_id":"18.0/changes/047","source_hash":"fe70390be48a7656a5a036d23b8695f7dd1cb00476e46001e3b1ed259d1548af","source_url":"/docs/release/18.0/#RELEASE-18-MONITORING","statement_hash":"ffa15ce62078a744cf44121cfda2949c530bd7fb777e4900033a28988556de13","text":"Add column pg_backend_memory_contexts.path to show memory context parents (Melih Mutlu) §","title":"Add column pg_backend_memory_contexts.path to show memory context parents","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4564f1ceb","d898665bf"],"commit_groups":[["4564f1ceb"],["d898665bf"]],"commits":["4564f1ceb","d898665bf"],"cves":[],"db_id":"ad850851b5569f2cacc651752f08d04f","html":"\u003cp\u003eAdd function \u003ca href=\"/docs/18/functions-info.html#FUNCTIONS-INFO-OBJECT-TABLE\" title=\"Table 9.81. Object Information and Addressing Functions\"\u003e\u003ccode\u003epg_get_acl()\u003c/code\u003e\u003c/a\u003e to retrieve database access control details (Joel Jacobson) \u003ca href=\"https://postgr.es/c/4564f1ceb\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d898665bf\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-33915810b55250be","identity_text":"Add function pg_get_acl() to retrieve database access control details (Joel Jacobson)","part":"changes","patch_ids":["4dc0424113c1959079f3a8cbcd6d075c","6f98238a578fbdf3c4f8b2f8442a9443"],"related_changes":[],"relations":[],"section":"Server / Privileges","section_path":["Server","Privileges"],"source_commits":["4564f1ceb","d898665bf"],"source_entry_id":"18.0/changes/048","source_hash":"39a0e54cf10496289f448e8b5cf7a83ad0f4a1dad5d8b88bc38a045012595af3","source_url":"/docs/release/18.0/#RELEASE-18-PRIVILEGES","statement_hash":"b5738fc376219c85ab240a4d03d8c61a19c7ef3218d218a2f99f961cfa02ae1d","text":"Add function pg_get_acl() to retrieve database access control details (Joel Jacobson) § §","title":"Add function pg_get_acl() to retrieve database access control details","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4eada203a"],"commit_groups":[["4eada203a"]],"commits":["4eada203a"],"cves":[],"db_id":"20e548031e0fa774a44ef2ccda8b5768","html":"\u003cp\u003eAdd function \u003ca href=\"/docs/18/functions-info.html#FUNCTIONS-INFO-ACCESS-TABLE\" title=\"Table 9.72. Access Privilege Inquiry Functions\"\u003e\u003ccode\u003ehas_largeobject_privilege()\u003c/code\u003e\u003c/a\u003e to check large object privileges (Yugo Nagata) \u003ca href=\"https://postgr.es/c/4eada203a\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-e083e86b0999f401","identity_text":"Add function has_largeobject_privilege() to check large object privileges (Yugo Nagata)","part":"changes","patch_ids":["692c244b77bff2a8f3509d0f3f788fb5"],"related_changes":[],"relations":[],"section":"Server / Privileges","section_path":["Server","Privileges"],"source_commits":["4eada203a"],"source_entry_id":"18.0/changes/049","source_hash":"bbfbf3c3ece75a40f49e6a874bdb5b72ba58a27f32a5ea35fd4d4c1eac892598","source_url":"/docs/release/18.0/#RELEASE-18-PRIVILEGES","statement_hash":"31f9f08133b37f73a56f5218942b92e031210ec05cba9a6cb6d49d942bfbac20","text":"Add function has_largeobject_privilege() to check large object privileges (Yugo Nagata) §","title":"Add function has_largeobject_privilege() to check large object privileges","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["0d6c47766"],"commit_groups":[["0d6c47766"]],"commits":["0d6c47766"],"cves":[],"db_id":"2115b59fe3ecb850d34420db9087d6ee","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/sql-alterdefaultprivileges.html\" title=\"ALTER DEFAULT PRIVILEGES\"\u003e\u003cspan\u003eALTER DEFAULT PRIVILEGES\u003c/span\u003e\u003c/a\u003e to define large object default privileges (Takatsuka Haruka, Yugo Nagata, Laurenz Albe) \u003ca href=\"https://postgr.es/c/0d6c47766\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-48cbad33bf051182","identity_text":"Allow sql-alterdefaultprivileges to define large object default privileges (Takatsuka Haruka, Yugo Nagata, Laurenz Albe)","part":"changes","patch_ids":["8bd885a988ec8e858d73081f630fd33d"],"related_changes":[],"relations":[],"section":"Server / Privileges","section_path":["Server","Privileges"],"source_commits":["0d6c47766"],"source_entry_id":"18.0/changes/050","source_hash":"4c91df429994b748ca8f11482114f697801f5b8c6c8b714ebf14f04619bf4653","source_url":"/docs/release/18.0/#RELEASE-18-PRIVILEGES","statement_hash":"91512a6ced76577a52c71c7f1692309e60bb18dc1ce44331c056f04fd50fb429","text":"Allow ALTER DEFAULT PRIVILEGES to define large object default privileges (Takatsuka Haruka, Yugo Nagata, Laurenz Albe) §","title":"Allow ALTER DEFAULT PRIVILEGES to define large object default privileges","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["ccd38024b"],"commit_groups":[["ccd38024b"]],"commits":["ccd38024b"],"cves":[],"db_id":"20b3f6628c87707ad4d0eb8fd8768e0a","html":"\u003cp\u003eAdd predefined role \u003ca href=\"/docs/18/predefined-roles.html\" title=\"21.5. Predefined Roles\"\u003e\u003ccode\u003epg_signal_autovacuum_worker\u003c/code\u003e\u003c/a\u003e (Kirill Reshke) \u003ca href=\"https://postgr.es/c/ccd38024b\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis allows sending signals to autovacuum workers.\u003c/p\u003e","id":"18.0-63bd5329a9fe779c","identity_text":"Add predefined role pg_signal_autovacuum_worker (Kirill Reshke) This allows sending signals to autovacuum workers.","part":"changes","patch_ids":["a254744dab5b2721c5babac8740a351d"],"related_changes":[],"relations":[],"section":"Server / Privileges","section_path":["Server","Privileges"],"source_commits":["ccd38024b"],"source_entry_id":"18.0/changes/051","source_hash":"bfdef5e379e1781509025a5997d7b24eee477202a1c63fdf10ed414f0ba7b3e4","source_url":"/docs/release/18.0/#RELEASE-18-PRIVILEGES","statement_hash":"c15408fea664f43b416b4b112fe35a5f8e4c76546718ab374fef03190e47327d","text":"Add predefined role pg_signal_autovacuum_worker (Kirill Reshke) § This allows sending signals to autovacuum workers.","title":"Add predefined role pg_signal_autovacuum_worker","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["b3f0be788"],"commit_groups":[["b3f0be788"]],"commits":["b3f0be788"],"cves":[],"db_id":"746baa07cb5e517064dca7ea3454e3b0","html":"\u003cp\u003eAdd support for the \u003ca href=\"/docs/18/auth-oauth.html\" title=\"20.15. OAuth Authorization/Authentication\"\u003eOAuth authentication method\u003c/a\u003e (Jacob Champion, Daniel Gustafsson, Thomas Munro) \u003ca href=\"https://postgr.es/c/b3f0be788\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis adds an \u003ccode\u003eoauth\u003c/code\u003e authentication method to \u003ca href=\"/docs/18/auth-pg-hba-conf.html\" title=\"20.1. The pg_hba.conf File\"\u003e\u003ccode\u003epg_hba.conf\u003c/code\u003e\u003c/a\u003e, libpq OAuth options, a server variable \u003ca href=\"/docs/18/runtime-config-connection.html#GUC-OAUTH-VALIDATOR-LIBRARIES\"\u003eoauth_validator_libraries\u003c/a\u003e to load token validation libraries, and a configure flag \u003ca href=\"/docs/18/install-make.html#CONFIGURE-OPTION-WITH-LIBCURL\"\u003e\u003ccode\u003e--with-libcurl\u003c/code\u003e\u003c/a\u003e to add the required compile-time libraries.\u003c/p\u003e","id":"18.0-8937e04e6f598c9a","identity_text":"Add support for the OAuth authentication method (Jacob Champion, Daniel Gustafsson, Thomas Munro) This adds an oauth authentication method to pg_hba.conf, libpq OAuth options, a server variable guc-oauth-validator-libraries to load token validation libraries, and a configure flag --with-libcurl to add the required compile-time libraries.","part":"changes","patch_ids":["e84eb2fdc1830185f25750762e1cc528"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["b3f0be788"],"source_entry_id":"18.0/changes/052","source_hash":"1ac9338858fd8a7a47d62e75d679e10a0eb1bfabc9a52d1e7db8098aa7bd9e0d","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"07ddc49607980c97519f77163181f14568e19bbe0b1e0dc01b218b1f6a71074d","text":"Add support for the OAuth authentication method (Jacob Champion, Daniel Gustafsson, Thomas Munro) § This adds an oauth authentication method to pg_hba.conf, libpq OAuth options, a server variable oauth_validator_libraries to load token validation libraries, and a configure flag --with-libcurl to add the required compile-time libraries.","title":"Add support for the OAuth authentication method","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["45188c2ea"],"commit_groups":[["45188c2ea"]],"commits":["45188c2ea"],"cves":[],"db_id":"13b081fb2e1030e7c402c99be84d674e","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-connection.html#GUC-SSL-TLS13-CIPHERS\"\u003essl_tls13_ciphers\u003c/a\u003e to allow specification of multiple colon-separated TLSv1.3 cipher suites (Erica Zhang, Daniel Gustafsson) \u003ca href=\"https://postgr.es/c/45188c2ea\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-c129dc9baebd36d0","identity_text":"Add server variable guc-ssl-tls13-ciphers to allow specification of multiple colon-separated TLSv1.3 cipher suites (Erica Zhang, Daniel Gustafsson)","part":"changes","patch_ids":["b918cd02542986f670ea5e4ccce7bed8"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["45188c2ea"],"source_entry_id":"18.0/changes/053","source_hash":"5d256d99caaf5046100077cd472e922ae375d82b0f5b45bcfbac3a79833692b5","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"ffe4b310bcfc2b812bd9ca43729c6e6988676e615fa96ac501930ef3cd998db9","text":"Add server variable ssl_tls13_ciphers to allow specification of multiple colon-separated TLSv1.3 cipher suites (Erica Zhang, Daniel Gustafsson) §","title":"Add server variable ssl_tls13_ciphers to allow specification of multiple colon-separated TLSv1.3 cipher suites","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["daa02c6bd"],"commit_groups":[["daa02c6bd"]],"commits":["daa02c6bd"],"cves":[],"db_id":"0ff6b951577e789ccfcf50c5fdd16250","html":"\u003cp\u003eChange server variable \u003ca href=\"/docs/18/runtime-config-connection.html#GUC-SSL-GROUPS\"\u003essl_groups\u003c/a\u003e's default to include elliptic curve X25519 (Daniel Gustafsson, Jacob Champion) \u003ca href=\"https://postgr.es/c/daa02c6bd\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-7ae83796934b368a","identity_text":"Change server variable guc-ssl-groups 's default to include elliptic curve X25519 (Daniel Gustafsson, Jacob Champion)","part":"changes","patch_ids":["b6419e2ab5092340bdb51279a882c575"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["daa02c6bd"],"source_entry_id":"18.0/changes/054","source_hash":"769ef4c7a0e583d2f4cb847ab408143dd1d5d440e558c0b751debd0c43265451","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"79f1b0ec5dbbc9c41cfae0c653c6b8af2978a2d458009ec866463efb3c895406","text":"Change server variable ssl_groups's default to include elliptic curve X25519 (Daniel Gustafsson, Jacob Champion) §","title":"Change server variable ssl_groups's default to include elliptic curve X25519","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["3d1ef3a15"],"commit_groups":[["3d1ef3a15"]],"commits":["3d1ef3a15"],"cves":[],"db_id":"96a81164afdac0bf4ed0486ab950b9cc","html":"\u003cp\u003eRename server variable \u003ccode\u003essl_ecdh_curve\u003c/code\u003e to \u003ca href=\"/docs/18/runtime-config-connection.html#GUC-SSL-GROUPS\"\u003essl_groups\u003c/a\u003e and allow multiple colon-separated \u003cacronym\u003eECDH\u003c/acronym\u003e curves to be specified (Erica Zhang, Daniel Gustafsson) \u003ca href=\"https://postgr.es/c/3d1ef3a15\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe previous name still works.\u003c/p\u003e","id":"18.0-ec11a3f47cab5302","identity_text":"Rename server variable ssl_ecdh_curve to guc-ssl-groups and allow multiple colon-separated ECDH curves to be specified (Erica Zhang, Daniel Gustafsson) The previous name still works.","part":"changes","patch_ids":["c2561d4875ae281fdaea78d9e93eaee2"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["3d1ef3a15"],"source_entry_id":"18.0/changes/055","source_hash":"69fc229fb451ba3569f10661789b08fd931063d5102c111408c2c761550da092","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"af282a32e71f1303e38dd9f838dce742a3ea5e5033c66e5a334acc730ab67445","text":"Rename server variable ssl_ecdh_curve to ssl_groups and allow multiple colon-separated ECDH curves to be specified (Erica Zhang, Daniel Gustafsson) § The previous name still works.","title":"Rename server variable ssl_ecdh_curve to ssl_groups and allow multiple colon-separated ECDH curves to be specified","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["9d9b9d46f","a460251f0"],"commit_groups":[["9d9b9d46f"],["a460251f0"]],"commits":["9d9b9d46f","a460251f0"],"cves":[],"db_id":"d4bdcc752134e88e3b6f69045f91e32f","html":"\u003cp\u003eMake \u003ca href=\"/docs/18/functions-admin.html#FUNCTIONS-ADMIN-SIGNAL-TABLE\" title=\"Table 9.96. Server Signaling Functions\"\u003ecancel request keys\u003c/a\u003e 256 bits (Heikki Linnakangas, Jelte Fennema-Nio) \u003ca href=\"https://postgr.es/c/a460251f0\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/9d9b9d46f\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is only possible when the server and client support wire protocol version 3.2, introduced in this release.\u003c/p\u003e","id":"18.0-fc222bd600eb20c7","identity_text":"Make cancel request keys 256 bits (Heikki Linnakangas, Jelte Fennema-Nio) This is only possible when the server and client support wire protocol version 3.2, introduced in this release.","part":"changes","patch_ids":["3374f7d4348f979a16fb3f835b1434dd","78aeb882063c4d9c0113cb769f6f63c8"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["9d9b9d46f","a460251f0"],"source_entry_id":"18.0/changes/056","source_hash":"4da7c6464ec24190e054671959a89c1342b41fd9c2df30a579e2cb4c8e608823","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"bf970fd6a3a870ec104cf3173699ac7821ccb4e686bb18b2d9050cfee203c953","text":"Make cancel request keys 256 bits (Heikki Linnakangas, Jelte Fennema-Nio) § § This is only possible when the server and client support wire protocol version 3.2, introduced in this release.","title":"Make cancel request keys 256 bits","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["c758119e5"],"commit_groups":[["c758119e5"]],"commits":["c758119e5"],"cves":[],"db_id":"14193c2c6216dac54ee9f03d74597315","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-vacuum.html#GUC-AUTOVACUUM-WORKER-SLOTS\"\u003eautovacuum_worker_slots\u003c/a\u003e to specify the maximum number of background workers (Nathan Bossart) \u003ca href=\"https://postgr.es/c/c758119e5\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eWith this variable set, \u003ca href=\"/docs/18/runtime-config-vacuum.html#GUC-AUTOVACUUM-MAX-WORKERS\"\u003eautovacuum_max_workers\u003c/a\u003e can be adjusted at runtime up to this maximum without a server restart.\u003c/p\u003e","id":"18.0-fad3071db20b5849","identity_text":"Add server variable guc-autovacuum-worker-slots to specify the maximum number of background workers (Nathan Bossart) With this variable set, guc-autovacuum-max-workers can be adjusted at runtime up to this maximum without a server restart.","part":"changes","patch_ids":["17efa2578b6fdfca54d1895a47b5d85c"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["c758119e5"],"source_entry_id":"18.0/changes/057","source_hash":"cccf9f941c4560c33011e635dcab0b9c28ae26749ffd1608f7169c4ecf499acc","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"2340cf9dd0c8914c3ae78fcca1d6cb8a3eec267275fe98352062b37d256a1302","text":"Add server variable autovacuum_worker_slots to specify the maximum number of background workers (Nathan Bossart) § With this variable set, autovacuum_max_workers can be adjusted at runtime up to this maximum without a server restart.","title":"Add server variable autovacuum_worker_slots to specify the maximum number of background 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Percentages are still used for triggering.\u003c/p\u003e","id":"18.0-cc3cc0af71ac8fcd","identity_text":"Allow specification of the fixed number of dead tuples that will trigger an autovacuum (Nathan Bossart, Frédéric Yhuel) The server variable is guc-autovacuum-vacuum-max-threshold . Percentages are still used for triggering.","part":"changes","patch_ids":["fede0a2ed06d94a30aac6de8675efbce"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["306dc520b"],"source_entry_id":"18.0/changes/058","source_hash":"fd553683edfb9d3b450f0a00d5e58d81232bb84ff144ad688ad048e97b11922e","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"f26aed72e786336ffb0181c576796c1b0d66b6c0c79fa7ab8337a9deb9a04a70","text":"Allow specification of the fixed number of dead tuples that will trigger an autovacuum (Nathan Bossart, Frédéric Yhuel) § The server variable is autovacuum_vacuum_max_threshold. Percentages are still used for triggering.","title":"Allow specification of the fixed number of dead tuples that will trigger an autovacuum","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["adb5f85fa"],"commit_groups":[["adb5f85fa"]],"commits":["adb5f85fa"],"cves":[],"db_id":"7d0f8a8401a0235fee5c42443323fd9f","html":"\u003cp\u003eChange server variable \u003ca href=\"/docs/18/runtime-config-resource.html#GUC-MAX-FILES-PER-PROCESS\"\u003emax_files_per_process\u003c/a\u003e to limit only files opened by a backend (Andres Freund) \u003ca href=\"https://postgr.es/c/adb5f85fa\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003ePreviously files opened by the postmaster were also counted toward this limit.\u003c/p\u003e","id":"18.0-88c8af4f4659a505","identity_text":"Change server variable guc-max-files-per-process to limit only files opened by a backend (Andres Freund) Previously files opened by the postmaster were also counted toward this limit.","part":"changes","patch_ids":["1253eb7b68a386abd794c882137adc02"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["adb5f85fa"],"source_entry_id":"18.0/changes/059","source_hash":"2618bfe12d00c39268c401694e59d9fad97443ba987c22b6d62e307da9068d9a","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"04e1a6687e91598505d1cd8239184c483171e03aa143374ed943a3e8b71c817c","text":"Change server variable max_files_per_process to limit only files opened by a backend (Andres Freund) § Previously files opened by the postmaster were also counted toward this limit.","title":"Change server variable max_files_per_process to limit only files opened by a backend","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["0dcaea569"],"commit_groups":[["0dcaea569"]],"commits":["0dcaea569"],"cves":[],"db_id":"baa925cc966c3797d6c1baeb8600b3af","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-preset.html#GUC-NUM-OS-SEMAPHORES\"\u003enum_os_semaphores\u003c/a\u003e to report the required number of semaphores (Nathan Bossart) \u003ca href=\"https://postgr.es/c/0dcaea569\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is useful for operating system configuration.\u003c/p\u003e","id":"18.0-a70925addf13174f","identity_text":"Add server variable guc-num-os-semaphores to report the required number of semaphores (Nathan Bossart) This is useful for operating system configuration.","part":"changes","patch_ids":["7cab2bba487b8dfdc88b894d86ebcb31"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["0dcaea569"],"source_entry_id":"18.0/changes/060","source_hash":"9ab5511113bd82e70e3a03fc12538f6345af41f77c718778b40bf3d3a03203b6","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"db627bdf62b6a351d882ccec445c9221ec8e4d930aed5bf5e6b0b5b611bd8094","text":"Add server variable num_os_semaphores to report the required number of semaphores (Nathan Bossart) § This is useful for operating system configuration.","title":"Add server variable num_os_semaphores to report the required number of semaphores","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4f7f7b037","81eaaa2c4"],"commit_groups":[["4f7f7b037"],["81eaaa2c4"]],"commits":["4f7f7b037","81eaaa2c4"],"cves":[],"db_id":"9a0ac630df36e673c00b61131cd0c2ff","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-client.html#GUC-EXTENSION-CONTROL-PATH\"\u003eextension_control_path\u003c/a\u003e to specify the location of extension control files (Peter Eisentraut, Matheus Alcantara) \u003ca href=\"https://postgr.es/c/4f7f7b037\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/81eaaa2c4\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-fcaec73419edafbc","identity_text":"Add server variable guc-extension-control-path to specify the location of extension control files (Peter Eisentraut, Matheus Alcantara)","part":"changes","patch_ids":["2c992ea1a18c7e56b1999e13915ad2f8","95178da37b740ae32403368a9d5de091"],"related_changes":[],"relations":[],"section":"Server / Server Configuration","section_path":["Server","Server Configuration"],"source_commits":["4f7f7b037","81eaaa2c4"],"source_entry_id":"18.0/changes/061","source_hash":"9d62b8c0663f70e4f69542ec94abb0e3f367bb880d1661fa4b5ee26a52495548","source_url":"/docs/release/18.0/#RELEASE-18-SERVER-CONFIG","statement_hash":"b2d063e72b9d991ddf32656536cdf6aa960609b5293a9f7685124d9018ed0d46","text":"Add server variable extension_control_path to specify the location of extension control files (Peter Eisentraut, Matheus Alcantara) § §","title":"Add server variable extension_control_path to specify the location of extension control files","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["ac0e33136"],"commit_groups":[["ac0e33136"]],"commits":["ac0e33136"],"cves":[],"db_id":"7e52ed73d316bf78778f528fedb05f84","html":"\u003cp\u003eAllow inactive replication slots to be automatically invalidated using server variable \u003ca href=\"/docs/18/runtime-config-replication.html#GUC-IDLE-REPLICATION-SLOT-TIMEOUT\"\u003eidle_replication_slot_timeout\u003c/a\u003e (Nisha Moond, Bharath Rupireddy) \u003ca href=\"https://postgr.es/c/ac0e33136\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-d6cdb50cb80abdda","identity_text":"Allow inactive replication slots to be automatically invalidated using server variable guc-idle-replication-slot-timeout (Nisha Moond, Bharath Rupireddy)","part":"changes","patch_ids":["df8d31e4efb6cb139d5c669e2215050c"],"related_changes":[],"relations":[],"section":"Server / Streaming Replication and Recovery","section_path":["Server","Streaming Replication and Recovery"],"source_commits":["ac0e33136"],"source_entry_id":"18.0/changes/062","source_hash":"8c442254dde2045ae1b1e87460c9e70a650a5b8afddfac774dc1463a967d81ba","source_url":"/docs/release/18.0/#RELEASE-18-REPLICATION","statement_hash":"eb9a1e5c89e5b4fa71a37fedc208ddb8c2f0f95fbc1eec06821cbc772f3bd8fc","text":"Allow inactive replication slots to be automatically invalidated using server variable idle_replication_slot_timeout (Nisha Moond, Bharath Rupireddy) §","title":"Allow inactive replication slots to be automatically invalidated using server variable idle_replication_slot_timeout","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["04ff636cb"],"commit_groups":[["04ff636cb"]],"commits":["04ff636cb"],"cves":[],"db_id":"1428b3f7f6cc1a4506850622a40c3ffb","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-replication.html#GUC-MAX-ACTIVE-REPLICATION-ORIGINS\"\u003emax_active_replication_origins\u003c/a\u003e to control the maximum active replication origins (Euler Taveira) \u003ca href=\"https://postgr.es/c/04ff636cb\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis was previously controlled by \u003ca href=\"/docs/18/runtime-config-replication.html#GUC-MAX-REPLICATION-SLOTS\"\u003emax_replication_slots\u003c/a\u003e, but this new setting allows a higher origin count in cases where fewer slots are required.\u003c/p\u003e","id":"18.0-03713c460c2a7d56","identity_text":"Add server variable guc-max-active-replication-origins to control the maximum active replication origins (Euler Taveira) This was previously controlled by guc-max-replication-slots , but this new setting allows a higher origin count in cases where fewer slots are required.","part":"changes","patch_ids":["a8c08a420a79bd1a161ea23d9bef6d71"],"related_changes":[],"relations":[],"section":"Server / Streaming Replication and Recovery","section_path":["Server","Streaming Replication and Recovery"],"source_commits":["04ff636cb"],"source_entry_id":"18.0/changes/063","source_hash":"33b1bea544f15476df511f7f493e700d5039ed734c0053ce03bf246913999aca","source_url":"/docs/release/18.0/#RELEASE-18-REPLICATION","statement_hash":"9e85b8d9968595a466cfb230295bcf24c446ed069e908115b73bf70ddbaf2392","text":"Add server variable max_active_replication_origins to control the maximum active replication origins (Euler Taveira) § This was previously controlled by max_replication_slots, but this new setting allows a higher origin count in cases where fewer slots are required.","title":"Add server variable max_active_replication_origins to control the maximum active replication origins","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["6252b1eaf","7054186c4","745217a05","87ce27de6"],"commit_groups":[["6252b1eaf"],["7054186c4"],["745217a05"],["87ce27de6"]],"commits":["6252b1eaf","7054186c4","745217a05","87ce27de6"],"cves":[],"db_id":"5202261d9ce471fa7ab14e9e38ae61ef","html":"\u003cp\u003eAllow the values of \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-GENERATED-STORED\"\u003egenerated columns\u003c/a\u003e to be logically replicated (Shubham Khanna, Vignesh C, Zhijie Hou, Shlok Kyal, Peter Smith) \u003ca href=\"https://postgr.es/c/745217a05\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/7054186c4\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/87ce27de6\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/6252b1eaf\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eIf the publication specifies a column list, all specified columns, generated and non-generated, are published. Without a specified column list, publication option \u003ccode\u003epublish_generated_columns\u003c/code\u003e controls whether generated columns are published. Previously generated columns were not replicated and the subscriber had to compute the values if possible; this is particularly useful for non-\u003cspan\u003ePostgreSQL\u003c/span\u003e subscribers which lack such a capability.\u003c/p\u003e","id":"18.0-b3be55f006e9da56","identity_text":"Allow the values of generated columns to be logically replicated (Shubham Khanna, Vignesh C, Zhijie Hou, Shlok Kyal, Peter Smith) If the publication specifies a column list, all specified columns, generated and non-generated, are published. Without a specified column list, publication option publish_generated_columns controls whether generated columns are published. Previously generated columns were not replicated and the subscriber had to compute the values if possible; this is particularly useful for non-PostgreSQL subscribers which lack such a capability.","part":"changes","patch_ids":["1665b39bcf49aa722b1893f0f6a01425","3341f4a55afcad51ffb341807df994d9","369fa64a83003bb9b411f50bb7db1dc9","4288fdb022ae4713ce4aa5fa5fa0f5cc"],"related_changes":[],"relations":[],"section":"Server / Logical Replication","section_path":["Server","Logical Replication"],"source_commits":["6252b1eaf","7054186c4","745217a05","87ce27de6"],"source_entry_id":"18.0/changes/064","source_hash":"8ce5cf78247c4224e21a3859bb19dbd3ae248d206b36330a42cd21f09eb98501","source_url":"/docs/release/18.0/#RELEASE-18-LOGICAL","statement_hash":"083520dac02028f1cb8e9374c5f6fee5c51e6f31ad5594e2b5d7f6386a3b9577","text":"Allow the values of generated columns to be logically replicated (Shubham Khanna, Vignesh C, Zhijie Hou, Shlok Kyal, Peter Smith) § § § § If the publication specifies a column list, all specified columns, generated and non-generated, are published. Without a specified column list, publication option publish_generated_columns controls whether generated columns are published. Previously generated columns were not replicated and the subscriber had to compute the values if possible; this is particularly useful for non-PostgreSQL subscribers which lack such a capability.","title":"Allow the values of generated columns to be logically replicated","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["1bf1140be"],"commit_groups":[["1bf1140be"]],"commits":["1bf1140be"],"cves":[],"db_id":"64ac8d883b9496b763afc3ba0c0bac52","html":"\u003cp\u003eChange the default \u003ca href=\"/docs/18/sql-createsubscription.html\" title=\"CREATE SUBSCRIPTION\"\u003e\u003cspan\u003eCREATE SUBSCRIPTION\u003c/span\u003e\u003c/a\u003e streaming option from \u003ccode\u003eoff\u003c/code\u003e to \u003ccode\u003eparallel\u003c/code\u003e (Vignesh C) \u003ca href=\"https://postgr.es/c/1bf1140be\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-2d4096e3c7abe9a2","identity_text":"Change the default sql-createsubscription streaming option from off to parallel (Vignesh C)","part":"changes","patch_ids":["6ef9a9f39489f250a02f1462b636b45f"],"related_changes":[],"relations":[],"section":"Server / Logical Replication","section_path":["Server","Logical Replication"],"source_commits":["1bf1140be"],"source_entry_id":"18.0/changes/065","source_hash":"dce9ffa74056678f5973ff428b9f15c4f65d9403797d8b7feb364f5e78f6b6b7","source_url":"/docs/release/18.0/#RELEASE-18-LOGICAL","statement_hash":"ccdb8be0260f594a383cc3edfe4b5c3fb3df37d5354d857e476778efb79b3ff4","text":"Change the default CREATE SUBSCRIPTION streaming option from off to parallel (Vignesh C) §","title":"Change the default CREATE SUBSCRIPTION streaming option from off to parallel","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["1462aad2e","4868c96bc"],"commit_groups":[["1462aad2e"],["4868c96bc"]],"commits":["1462aad2e","4868c96bc"],"cves":[],"db_id":"41cd5554ab5a99df850ddc649a630bf5","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/sql-altersubscription.html\" title=\"ALTER SUBSCRIPTION\"\u003e\u003cspan\u003eALTER SUBSCRIPTION\u003c/span\u003e\u003c/a\u003e to change the replication slot's two-phase commit behavior (Hayato Kuroda, Ajin Cherian, Amit Kapila, Zhijie Hou) \u003ca href=\"https://postgr.es/c/1462aad2e\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/4868c96bc\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-a97cc604ed380ce6","identity_text":"Allow sql-altersubscription to change the replication slot's two-phase commit behavior (Hayato Kuroda, Ajin Cherian, Amit Kapila, Zhijie Hou)","part":"changes","patch_ids":["15c1439cde9cf963e340507c56e6bd57","fd8060f9266b72de63d063d80a6bb2f9"],"related_changes":[],"relations":[],"section":"Server / Logical Replication","section_path":["Server","Logical Replication"],"source_commits":["1462aad2e","4868c96bc"],"source_entry_id":"18.0/changes/066","source_hash":"b96743f044a02e2201e5e678b547c8fdb56efd310343f8b3e4919fa6c862dfc7","source_url":"/docs/release/18.0/#RELEASE-18-LOGICAL","statement_hash":"4c14605560e017cf4d89bb8a33a0ab993f4a9ff353648fde85d7e88cde571530","text":"Allow ALTER SUBSCRIPTION to change the replication slot's two-phase commit behavior (Hayato Kuroda, Ajin Cherian, Amit Kapila, Zhijie Hou) § §","title":"Allow ALTER SUBSCRIPTION to change the replication slot's two-phase commit 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report in new columns of \u003ca href=\"/docs/18/monitoring-stats.html#MONITORING-PG-STAT-SUBSCRIPTION-STATS\" title=\"27.2.9. pg_stat_subscription_stats\"\u003e\u003ccode\u003epg_stat_subscription_stats\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e","id":"18.0-a8d78b040297e9b0","identity_text":"Log conflicts while applying logical replication changes (Zhijie Hou, Nisha Moond) Also report in new columns of pg_stat_subscription_stats.","part":"changes","patch_ids":["51def9eea7743271af2095d95b545a4f","8b6edece41c91a3f70d5596159ddbe32","ae3bbcf20f2ea20c2688908c03c2959a","ae68c8345354c13eb606659698b10d59","f0ec97314be2a61418e5a1c0f3506967"],"related_changes":[],"relations":[],"section":"Server / Logical Replication","section_path":["Server","Logical 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href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-GENERATED-STORED\"\u003egenerated columns\u003c/a\u003e to be virtual, and make them the default (Peter Eisentraut, Jian He, Richard Guo, Dean Rasheed) \u003ca href=\"https://postgr.es/c/83ea6c540\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/cdc168ad4\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/1e4351af3\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eVirtual generated columns generate their values when the columns are read, not written. The write behavior can still be specified via the \u003ccode\u003eSTORED\u003c/code\u003e option.\u003c/p\u003e","id":"18.0-d75b3348cb3c29c1","identity_text":"Allow generated columns to be virtual, and make them the default (Peter Eisentraut, Jian He, Richard Guo, Dean Rasheed) Virtual generated columns generate their values when the columns are read, not written. The write behavior can still be specified via the STORED option.","part":"changes","patch_ids":["3e371ba8f3c63409d6e3c656c1bdb71c","447c816d3adc612f5ef8fd3d4f63cc04","dc34ef60f4a74f75244fff70b71d30ca"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["1e4351af3","83ea6c540","cdc168ad4"],"source_entry_id":"18.0/changes/068","source_hash":"8b9bb147252ad7e35c8f655d35d8c3a7e914db7df27c4bd4a357130d618b67b2","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"5dc1a0db02d845a39dfa141f18f21f435065540c7745af4f23009c79c78be2b5","text":"Allow generated columns to be virtual, and make them the default (Peter Eisentraut, Jian He, Richard Guo, Dean Rasheed) § § § Virtual generated columns generate their values when the columns are read, not written. The write behavior can still be specified via the STORED option.","title":"Allow generated columns to be virtual, and make them the default","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["80feb727c"],"commit_groups":[["80feb727c"]],"commits":["80feb727c"],"cves":[],"db_id":"a6ab1b647947ca727232553f3a8dc197","html":"\u003cp\u003eAdd \u003ccode\u003eOLD\u003c/code\u003e/\u003ccode\u003eNEW\u003c/code\u003e support to \u003ca href=\"/docs/18/dml-returning.html\" title=\"6.4. Returning Data from Modified Rows\"\u003e\u003ccode\u003eRETURNING\u003c/code\u003e\u003c/a\u003e in \u003cacronym\u003eDML\u003c/acronym\u003e queries (Dean Rasheed) \u003ca href=\"https://postgr.es/c/80feb727c\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003ePreviously \u003ccode\u003eRETURNING\u003c/code\u003e only returned new values for \u003ca href=\"/docs/18/sql-insert.html\" title=\"INSERT\"\u003e\u003cspan\u003eINSERT\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-update.html\" title=\"UPDATE\"\u003e\u003cspan\u003eUPDATE\u003c/span\u003e\u003c/a\u003e, and old values for \u003ca href=\"/docs/18/sql-delete.html\" title=\"DELETE\"\u003e\u003cspan\u003eDELETE\u003c/span\u003e\u003c/a\u003e; \u003ca href=\"/docs/18/sql-merge.html\" title=\"MERGE\"\u003e\u003cspan\u003eMERGE\u003c/span\u003e\u003c/a\u003e would return the appropriate value for the internal query executed. This new syntax allows the \u003ccode\u003eRETURNING\u003c/code\u003e list of \u003ccode\u003eINSERT\u003c/code\u003e/\u003ccode\u003eUPDATE\u003c/code\u003e/\u003ccode\u003eDELETE\u003c/code\u003e/\u003ccode\u003eMERGE\u003c/code\u003e to explicitly return old and new values by using the special aliases \u003ccode\u003eold\u003c/code\u003e and \u003ccode\u003enew\u003c/code\u003e. These aliases can be renamed to avoid identifier conflicts.\u003c/p\u003e","id":"18.0-1b582314268a1627","identity_text":"Add OLD/NEW support to RETURNING in DML queries (Dean Rasheed) Previously RETURNING only returned new values for sql-insert and sql-update , and old values for sql-delete ; sql-merge would return the appropriate value for the internal query executed. This new syntax allows the RETURNING list of INSERT/UPDATE/DELETE/MERGE to explicitly return old and new values by using the special aliases old and new. These aliases can be renamed to avoid identifier conflicts.","part":"changes","patch_ids":["4fca2a9efd37d56cb0881b858a6b90f0"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["80feb727c"],"source_entry_id":"18.0/changes/069","source_hash":"a8fc808c426e5a39fe1dc4198d1fc55913f32e15adb8f6ffac2992288794c5d6","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"2d5bdf5703ba0215fc209242d19c9debd27beb536915449517e314371beaea1e","text":"Add OLD/NEW support to RETURNING in DML queries (Dean Rasheed) § Previously RETURNING only returned new values for INSERT and UPDATE, and old values for DELETE; MERGE would return the appropriate value for the internal query executed. This new syntax allows the RETURNING list of INSERT/UPDATE/DELETE/MERGE to explicitly return old and new values by using the special aliases old and new. These aliases can be renamed to avoid identifier conflicts.","title":"Add OLD/NEW support to RETURNING in DML queries","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["302cf1575"],"commit_groups":[["302cf1575"]],"commits":["302cf1575"],"cves":[],"db_id":"3c08bf99d8f77ab94596e695234e7097","html":"\u003cp\u003eAllow foreign tables to be created like existing local tables (Zhang Mingli) \u003ca href=\"https://postgr.es/c/302cf1575\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe syntax is \u003ca href=\"/docs/18/sql-createforeigntable.html\" title=\"CREATE FOREIGN TABLE\"\u003e\u003ccode\u003eCREATE FOREIGN TABLE ... LIKE\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e","id":"18.0-5507537d48f3fa62","identity_text":"Allow foreign tables to be created like existing local tables (Zhang Mingli) The syntax is CREATE FOREIGN TABLE ... LIKE.","part":"changes","patch_ids":["411e9a2745f01f897f4e54030814cdda"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["302cf1575"],"source_entry_id":"18.0/changes/070","source_hash":"62be8c19fa522f585e5dde472a79dd0aca848387218592415e6459267cb044c1","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"650c85d540879cb0964e2e35ff37c707d3011899d487df426f0eca681a4e7ed5","text":"Allow foreign tables to be created like existing local tables (Zhang Mingli) § The syntax is CREATE FOREIGN TABLE ... LIKE.","title":"Allow foreign tables to be created like existing local tables","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["85b7efa1c"],"commit_groups":[["85b7efa1c"]],"commits":["85b7efa1c"],"cves":[],"db_id":"f3cb3e9cf2993fd77e182438fd54d155","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-LIKE\" title=\"9.7.1. LIKE\"\u003e\u003ccode\u003eLIKE\u003c/code\u003e\u003c/a\u003e with \u003ca href=\"/docs/18/collation.html#COLLATION-NONDETERMINISTIC\" title=\"23.2.2.4. Nondeterministic Collations\"\u003enondeterministic collations\u003c/a\u003e (Peter Eisentraut) \u003ca href=\"https://postgr.es/c/85b7efa1c\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-fe1a855e89d5c6c8","identity_text":"Allow LIKE with nondeterministic collations (Peter Eisentraut)","part":"changes","patch_ids":["a5fc7223c5e3de4e0b0adde360f9a8ab"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["85b7efa1c"],"source_entry_id":"18.0/changes/071","source_hash":"f18c3846540e26051772bf9f2ce2e36b80aaee96301004d7a41dfd9d5e174e11","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"df1ccd059c05458d62412178f18b09f9ac5b61de20fa13903026b25d6b0a281d","text":"Allow LIKE with nondeterministic collations (Peter Eisentraut) §","title":"Allow LIKE with nondeterministic collations","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["329304c90"],"commit_groups":[["329304c90"]],"commits":["329304c90"],"cves":[],"db_id":"1633612e398b9d62fc3745ae04ffbdcb","html":"\u003cp\u003eAllow text position search functions with nondeterministic collations (Peter Eisentraut) \u003ca href=\"https://postgr.es/c/329304c90\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThese used to generate an error.\u003c/p\u003e","id":"18.0-547a5b7139bf17c9","identity_text":"Allow text position search functions with nondeterministic collations (Peter Eisentraut) These used to generate an error.","part":"changes","patch_ids":["43d52072e1fb7ccdaab204775ce5218b"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["329304c90"],"source_entry_id":"18.0/changes/072","source_hash":"44de95f0bc4bf8dedce0af6fad80799804648813e2b8d379595f9119068daf23","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"819c561a7502a24a171a66abb4e6b6d3543683ac066ea66ccff53a0fce4befea","text":"Allow text position search functions with nondeterministic collations (Peter Eisentraut) § These used to generate an error.","title":"Allow text position search functions with nondeterministic collations","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d3d098316"],"commit_groups":[["d3d098316"]],"commits":["d3d098316"],"cves":[],"db_id":"30595e5c571a05cc7aee9889ba3a082f","html":"\u003cp\u003eAdd builtin collation provider \u003ca href=\"/docs/18/locale.html#LOCALE-PROVIDERS\" title=\"23.1.4. Locale Providers\"\u003e\u003ccode\u003ePG_UNICODE_FAST\u003c/code\u003e\u003c/a\u003e (Jeff Davis) \u003ca href=\"https://postgr.es/c/d3d098316\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis locale supports case mapping, but sorts in code point order, not natural language order.\u003c/p\u003e","id":"18.0-353986c77138379c","identity_text":"Add builtin collation provider PG_UNICODE_FAST (Jeff Davis) This locale supports case mapping, but sorts in code point order, not natural language order.","part":"changes","patch_ids":["04e3a10e98b76c4d3552450e42090216"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["d3d098316"],"source_entry_id":"18.0/changes/073","source_hash":"c67e8fc3c341be4b77ad03dc233abe7dcf8538d89e6aa0f6ccdf7ecd5fced9ee","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"a2fd33890c8b434927b30005c495e84f2917c37b0d70177e7af7e169446cb0cc","text":"Add builtin collation provider PG_UNICODE_FAST (Jeff Davis) § This locale supports case mapping, but sorts in code point order, not natural language order.","title":"Add builtin collation provider PG_UNICODE_FAST","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["62ddf7ee9"],"commit_groups":[["62ddf7ee9"]],"commits":["62ddf7ee9"],"cves":[],"db_id":"94f45240a0275d0638838beebe665ece","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003cspan\u003eVACUUM\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003cspan\u003eANALYZE\u003c/span\u003e\u003c/a\u003e to process partitioned tables without processing their children (Michael Harris) \u003ca href=\"https://postgr.es/c/62ddf7ee9\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is enabled with the new \u003ccode\u003eONLY\u003c/code\u003e option. This is useful since autovacuum does not process partitioned tables, just its children.\u003c/p\u003e","id":"18.0-f2283e0ad8b607f4","identity_text":"Allow sql-vacuum and sql-analyze to process partitioned tables without processing their children (Michael Harris) This is enabled with the new ONLY option. This is useful since autovacuum does not process partitioned tables, just its children.","part":"changes","patch_ids":["29279fd7549098871f985b99df60e141"],"related_changes":[{"db_id":"c27156e947f09ff22df4dce5613e8f4c","evidence":{"patch_ids":["29279fd7549098871f985b99df60e141"],"same_day":true},"kind":"related","label":"18.0","source_url":"/docs/release/18.0/#RELEASE-18-MIGRATION","title":"Change VACUUM and ANALYZE to process the inheritance children of a parent","url":"/docs/compare/?release=18.0#18.0-c84ca88e6e5518a9","version":"18.0"}],"relations":[{"evidence":{"patch_ids":["29279fd7549098871f985b99df60e141"],"same_day":true},"rule":2,"target":"c27156e947f09ff22df4dce5613e8f4c","type":"related"}],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["62ddf7ee9"],"source_entry_id":"18.0/changes/074","source_hash":"05c7937bacc706d236a69b8c4fc589b591495e0020f6ccc2a065ca5215497451","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"186081ff4a06c8a75bdfc573ce88d92f94310682d9ee69294323a9c8326c9e6f","text":"Allow VACUUM and ANALYZE to process partitioned tables without processing their children (Michael Harris) § This is enabled with the new ONLY option. This is useful since autovacuum does not process partitioned tables, just its children.","title":"Allow VACUUM and ANALYZE to process partitioned tables without processing their children","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["650ab8aaf","d32d14639","e839c8ecc"],"commit_groups":[["650ab8aaf"],["d32d14639"],["e839c8ecc"]],"commits":["650ab8aaf","d32d14639","e839c8ecc"],"cves":[],"db_id":"6e9858b57c68ea99d8150fd4b9910b9f","html":"\u003cp\u003eAdd functions to modify per-relation and per-column optimizer statistics (Corey Huinker) \u003ca href=\"https://postgr.es/c/e839c8ecc\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d32d14639\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/650ab8aaf\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe functions are \u003ca href=\"/docs/18/functions-admin.html#FUNCTIONS-ADMIN-STATSMOD\" title=\"Table 9.105. Database Object Statistics Manipulation Functions\"\u003e\u003ccode\u003epg_restore_relation_stats()\u003c/code\u003e\u003c/a\u003e, \u003ccode\u003epg_restore_attribute_stats()\u003c/code\u003e, \u003ccode\u003epg_clear_relation_stats()\u003c/code\u003e, and \u003ccode\u003epg_clear_attribute_stats()\u003c/code\u003e.\u003c/p\u003e","id":"18.0-00fa56f14a769e0c","identity_text":"Add functions to modify per-relation and per-column optimizer statistics (Corey Huinker) The functions are pg_restore_relation_stats(), pg_restore_attribute_stats(), pg_clear_relation_stats(), and pg_clear_attribute_stats().","part":"changes","patch_ids":["4b5624c10aaa5b112428b0a7a7f438af","aec78a3156d287b4d2d70cdd28529fcb","eaa21c78bd0fb6108287d3368130333b"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["650ab8aaf","d32d14639","e839c8ecc"],"source_entry_id":"18.0/changes/075","source_hash":"674b01db84fb9420f02aad464846ffa2cb53e14b1d1fbbb110ec279daa7ad21d","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"7eaa13e8bdea924978103d7640a4fbfb4bfa5d38f0861eb50b3ae7fb57e908a3","text":"Add functions to modify per-relation and per-column optimizer statistics (Corey Huinker) § § § The functions are pg_restore_relation_stats(), pg_restore_attribute_stats(), pg_clear_relation_stats(), and pg_clear_attribute_stats().","title":"Add functions to modify per-relation and per-column optimizer statistics","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["f78ca6f3e"],"commit_groups":[["f78ca6f3e"]],"commits":["f78ca6f3e"],"cves":[],"db_id":"b992193589e7617ce4982491eb56e0e8","html":"\u003cp\u003eAdd server variable \u003ca href=\"/docs/18/runtime-config-resource.html#GUC-FILE-COPY-METHOD\"\u003efile_copy_method\u003c/a\u003e to control the file copying method (Nazir Bilal Yavuz) \u003ca href=\"https://postgr.es/c/f78ca6f3e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis controls whether \u003ca href=\"/docs/18/sql-createdatabase.html\" title=\"CREATE DATABASE\"\u003e\u003ccode\u003eCREATE DATABASE ... STRATEGY=FILE_COPY\u003c/code\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-alterdatabase.html\" title=\"ALTER DATABASE\"\u003e\u003ccode\u003eALTER DATABASE ... SET TABLESPACE\u003c/code\u003e\u003c/a\u003e uses file copy or clone.\u003c/p\u003e","id":"18.0-615abfe2518a2e1a","identity_text":"Add server variable guc-file-copy-method to control the file copying method (Nazir Bilal Yavuz) This controls whether CREATE DATABASE ... STRATEGY=FILE_COPY and ALTER DATABASE ... SET TABLESPACE uses file copy or clone.","part":"changes","patch_ids":["439a7381d3a81157f6048dcf27ba49c2"],"related_changes":[],"relations":[],"section":"Utility Commands","section_path":["Utility Commands"],"source_commits":["f78ca6f3e"],"source_entry_id":"18.0/changes/076","source_hash":"55ffac7e2445fc4100affe783d64394b74d1f2e231c9ff84dec30c9a304d45d3","source_url":"/docs/release/18.0/#RELEASE-18-UTILITY","statement_hash":"d2befdc7cea14270674f2666fadea7539a2a737ce15620835aa47ff9bd481014","text":"Add server variable file_copy_method to control the file copying method (Nazir Bilal Yavuz) § This controls whether CREATE DATABASE ... STRATEGY=FILE_COPY and ALTER DATABASE ... SET TABLESPACE uses file copy or clone.","title":"Add server variable file_copy_method to control the file copying method","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["89f908a6d","fc0438b4e"],"commit_groups":[["89f908a6d"],["fc0438b4e"]],"commits":["89f908a6d","fc0438b4e"],"cves":[],"db_id":"656f1a2aaf525351eb1b8eece841fb72","html":"\u003cp\u003eAllow the specification of non-overlapping \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-PRIMARY-KEY\"\u003e\u003ccode\u003ePRIMARY KEY\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-UNIQUE\"\u003e\u003ccode\u003eUNIQUE\u003c/code\u003e\u003c/a\u003e, and \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-REFERENCES\"\u003eforeign key\u003c/a\u003e constraints (Paul A. Jungwirth) \u003ca href=\"https://postgr.es/c/fc0438b4e\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/89f908a6d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is specified by \u003ccode\u003eWITHOUT OVERLAPS\u003c/code\u003e for \u003ccode\u003ePRIMARY KEY\u003c/code\u003e and \u003ccode\u003eUNIQUE\u003c/code\u003e, and by \u003ccode\u003ePERIOD\u003c/code\u003e for foreign keys, all applied to the last specified column.\u003c/p\u003e","id":"18.0-db27a9639261e139","identity_text":"Allow the specification of non-overlapping PRIMARY KEY, UNIQUE, and foreign key constraints (Paul A. Jungwirth) This is specified by WITHOUT OVERLAPS for PRIMARY KEY and UNIQUE, and by PERIOD for foreign keys, all applied to the last specified column.","part":"changes","patch_ids":["9d21a99c31ba9ddbc8896e95bc3a20c8","ed4443224512a7d7c9e0593dd5194bd1"],"related_changes":[],"relations":[],"section":"Utility Commands / Constraints","section_path":["Utility Commands","Constraints"],"source_commits":["89f908a6d","fc0438b4e"],"source_entry_id":"18.0/changes/077","source_hash":"cec7b6e045c9545e4f10003ed952bf9225e93776662baf6f97aab61666ffbe22","source_url":"/docs/release/18.0/#RELEASE-18-CONSTRAINTS","statement_hash":"f26c4016e11249e5cafa6f494580e249b2ffd42b0e460e4b6da81439d8a183c1","text":"Allow the specification of non-overlapping PRIMARY KEY, UNIQUE, and foreign key constraints (Paul A. Jungwirth) § § This is specified by WITHOUT OVERLAPS for PRIMARY KEY and UNIQUE, and by PERIOD for foreign keys, all applied to the last specified column.","title":"Allow the specification of non-overlapping PRIMARY KEY, UNIQUE, and foreign key constraints","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["ca87c415e","eec0040c4"],"commit_groups":[["ca87c415e"],["eec0040c4"]],"commits":["ca87c415e","eec0040c4"],"cves":[],"db_id":"156ef162ef6c54bcf8685caaa1f35f9c","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-CHECK\"\u003e\u003ccode\u003eCHECK\u003c/code\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-REFERENCES\"\u003eforeign key\u003c/a\u003e constraints to be specified as \u003ccode\u003eNOT ENFORCED\u003c/code\u003e (Amul Sul) \u003ca href=\"https://postgr.es/c/ca87c415e\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/eec0040c4\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis also adds column \u003ca href=\"/docs/18/catalog-pg-constraint.html\" title=\"52.13. pg_constraint\"\u003e\u003ccode\u003epg_constraint\u003c/code\u003e\u003c/a\u003e.\u003ccode\u003econenforced\u003c/code\u003e.\u003c/p\u003e","id":"18.0-0b43fb4e9ec35c53","identity_text":"Allow CHECK and foreign key constraints to be specified as NOT ENFORCED (Amul Sul) This also adds column pg_constraint.conenforced.","part":"changes","patch_ids":["28c11a4e5c4747a11fea5d43ea2536bb","897c774e88b353e9aaeb6731a2e16f1e"],"related_changes":[],"relations":[],"section":"Utility Commands / Constraints","section_path":["Utility Commands","Constraints"],"source_commits":["ca87c415e","eec0040c4"],"source_entry_id":"18.0/changes/078","source_hash":"47a74d174f45c84fadfefcd99f91a1c5b2a162611ee164e7a53164d9a4c34e1b","source_url":"/docs/release/18.0/#RELEASE-18-CONSTRAINTS","statement_hash":"9d9913a6743e4062207224366278ff21a4ddbc3afbab5cd896fbb02070710e2f","text":"Allow CHECK and foreign key constraints to be specified as NOT ENFORCED (Amul Sul) § § This also adds column pg_constraint.conenforced.","title":"Allow CHECK and foreign key constraints to be specified as NOT ENFORCED","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["9321d2fdf"],"commit_groups":[["9321d2fdf"]],"commits":["9321d2fdf"],"cves":[],"db_id":"68a1f7d62d756e8a62c81960b94b7516","html":"\u003cp\u003eRequire \u003ca href=\"/docs/18/sql-createtable.html#SQL-CREATETABLE-PARMS-REFERENCES\"\u003eprimary/foreign key\u003c/a\u003e relationships to use either deterministic collations or the the same nondeterministic collations (Peter Eisentraut) \u003ca href=\"https://postgr.es/c/9321d2fdf\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThe restore of a \u003ca href=\"/docs/18/app-pgdump.html\" title=\"pg_dump\"\u003e\u003cspan\u003e\u003cspan\u003epg_dump\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, also used by \u003ca href=\"/docs/18/pgupgrade.html\" title=\"pg_upgrade\"\u003e\u003cspan\u003e\u003cspan\u003epg_upgrade\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, will fail if these requirements are not met; schema changes must be made for these upgrade methods to succeed.\u003c/p\u003e","id":"18.0-8f6d0fef92cbe901","identity_text":"Require primary/foreign key relationships to use either deterministic collations or the the same nondeterministic collations (Peter Eisentraut) The restore of a app-pgdump , also used by pgupgrade , will fail if these requirements are not met; schema changes must be made for these upgrade methods to succeed.","part":"changes","patch_ids":["0ce5a6d8a11a1381cec57c4513b145b6"],"related_changes":[],"relations":[],"section":"Utility Commands / Constraints","section_path":["Utility Commands","Constraints"],"source_commits":["9321d2fdf"],"source_entry_id":"18.0/changes/079","source_hash":"2b17eb3b34045fd66a066a2076d863f0fa350f40aa79c07d72d3a50fcdeff6f3","source_url":"/docs/release/18.0/#RELEASE-18-CONSTRAINTS","statement_hash":"2618c39bc6d6dedcb5838152a2f2578f929d0e51755b824342e7609b6456ce31","text":"Require primary/foreign key relationships to use either deterministic collations or the the same nondeterministic collations (Peter Eisentraut) § The restore of a pg_dump, also used by pg_upgrade, will fail if these requirements are not met; 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Function alias \u003ca href=\"/docs/18/functions-uuid.html#FUNC_UUID_GEN_TABLE\" title=\"Table 9.45. UUID Generation Functions\"\u003e\u003ccode\u003euuidv4()\u003c/code\u003e\u003c/a\u003e has been added to explicitly generate version 4 UUIDs.\u003c/p\u003e","id":"18.0-542d8a8a70b3db3c","identity_text":"Add UUID version 7 generation function uuidv7() (Andrey Borodin) This UUID value is temporally sortable. 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Function alias uuidv4() has been added to explicitly generate version 4 UUIDs.","title":"Add UUID version 7 generation function uuidv7()","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["760162fed"],"commit_groups":[["760162fed"]],"commits":["760162fed"],"cves":[],"db_id":"4adbc4a880c6d186b573a23b72e25743","html":"\u003cp\u003eAdd functions \u003ca href=\"/docs/18/functions-binarystring.html#FUNCTIONS-BINARYSTRING-OTHER\" title=\"Table 9.12. Other Binary String Functions\"\u003e\u003ccode\u003ecrc32()\u003c/code\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/functions-binarystring.html#FUNCTIONS-BINARYSTRING-OTHER\" title=\"Table 9.12. Other Binary String Functions\"\u003e\u003ccode\u003ecrc32c()\u003c/code\u003e\u003c/a\u003e to compute \u003cacronym\u003eCRC\u003c/acronym\u003e values (Aleksander Alekseev) \u003ca href=\"https://postgr.es/c/760162fed\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-0793591dedbc959b","identity_text":"Add functions crc32() and crc32c() to compute CRC values (Aleksander Alekseev)","part":"changes","patch_ids":["f072ba34fd057475f25240221b644589"],"related_changes":[],"relations":[],"section":"Functions","section_path":["Functions"],"source_commits":["760162fed"],"source_entry_id":"18.0/changes/113","source_hash":"186d4a85f05026c3f1e1b5cedc85be001793dd4387c3846bd784693e34d9df3e","source_url":"/docs/release/18.0/#RELEASE-18-FUNCTIONS","statement_hash":"b7c1fff56676d7a5ea8f068fd55d5c9250a4f76ec60d2244c2e801cfe67c7e03","text":"Add functions crc32() and crc32c() to compute CRC values (Aleksander Alekseev) §","title":"Add functions crc32() and crc32c() to compute CRC values","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a3b6dfd41"],"commit_groups":[["a3b6dfd41"]],"commits":["a3b6dfd41"],"cves":[],"db_id":"986dd3e980b067ffd2e6eecdfc4befd1","html":"\u003cp\u003eAdd math functions \u003ca href=\"/docs/18/functions-math.html#FUNCTIONS-MATH-FUNC-TABLE\" title=\"Table 9.5. Mathematical Functions\"\u003e\u003ccode\u003egamma()\u003c/code\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/functions-math.html#FUNCTIONS-MATH-FUNC-TABLE\" title=\"Table 9.5. Mathematical Functions\"\u003e\u003ccode\u003elgamma()\u003c/code\u003e\u003c/a\u003e (Dean Rasheed) \u003ca href=\"https://postgr.es/c/a3b6dfd41\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-88be5f9be0b211b5","identity_text":"Add math functions gamma() and lgamma() (Dean Rasheed)","part":"changes","patch_ids":["e0b46f5f41bfa3e2a42c6d003da6b3d5"],"related_changes":[],"relations":[],"section":"Functions","section_path":["Functions"],"source_commits":["a3b6dfd41"],"source_entry_id":"18.0/changes/114","source_hash":"0e6224fe43da67b085f65cee813ae8aad126061d045f1ff177ccd09630b490bd","source_url":"/docs/release/18.0/#RELEASE-18-FUNCTIONS","statement_hash":"6e74c2ea38c261b8bb55b6b1bcd723c5977a27e47fe892c9b2fbb23d25a61bef","text":"Add math functions gamma() and lgamma() (Dean Rasheed) §","title":"Add math functions gamma() and lgamma()","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["246dedc5d"],"commit_groups":[["246dedc5d"]],"commits":["246dedc5d"],"cves":[],"db_id":"a4ea7ded150aaebd8e3d529313e4ff98","html":"\u003cp\u003eAllow \u003ccode\u003e=\u0026gt;\u003c/code\u003e syntax for named cursor arguments in \u003ca href=\"/docs/18/plpgsql.html\" title=\"Chapter 41. PL/pgSQL — SQL Procedural Language\"\u003ePL/pgSQL\u003c/a\u003e (Pavel Stehule) \u003ca href=\"https://postgr.es/c/246dedc5d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eWe previously only accepted \u003ccode\u003e:=\u003c/code\u003e.\u003c/p\u003e","id":"18.0-d96ba464f44620eb","identity_text":"Allow =\u003e syntax for named cursor arguments in PL/pgSQL (Pavel Stehule) We previously only accepted :=.","part":"changes","patch_ids":["93da3674645c806399e4a7258ccd3d35"],"related_changes":[],"relations":[],"section":"Functions","section_path":["Functions"],"source_commits":["246dedc5d"],"source_entry_id":"18.0/changes/115","source_hash":"0d96d209799c5f086a10c64775cb42339b3d437dcb75d4c0b0d7ca78d9aa678e","source_url":"/docs/release/18.0/#RELEASE-18-FUNCTIONS","statement_hash":"add7c95473de1dd4a0566aaf8254da83d00c65a5719b19d40aa9c92d4001cd1c","text":"Allow =\u003e syntax for named cursor arguments in PL/pgSQL (Pavel Stehule) § We previously only accepted :=.","title":"Allow =\u003e syntax for named cursor arguments in PL/pgSQL","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["580f8727c"],"commit_groups":[["580f8727c"]],"commits":["580f8727c"],"cves":[],"db_id":"325c0a35a7406d298611bb6828289ff0","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003e\u003ccode\u003eregexp_match[es]()\u003c/code\u003e\u003c/a\u003e/\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003e\u003ccode\u003eregexp_like()\u003c/code\u003e\u003c/a\u003e/\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003e\u003ccode\u003eregexp_replace()\u003c/code\u003e\u003c/a\u003e/\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular 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regexp_match[es]()/regexp_like()/regexp_replace()/regexp_count()/regexp_instr()/regexp_substr()/regexp_split_to_table()/regexp_split_to_array() to use named arguments (Jian He)","part":"changes","patch_ids":["4e22fed07663f7a3f1934e689acb6eaa"],"related_changes":[],"relations":[],"section":"Functions","section_path":["Functions"],"source_commits":["580f8727c"],"source_entry_id":"18.0/changes/116","source_hash":"537f565df3ddb721db2bfe04fb5165619d5ed54a98e5025bf7ebe2594e7ea5fe","source_url":"/docs/release/18.0/#RELEASE-18-FUNCTIONS","statement_hash":"3d7072f71a631c3271d07df2f0b0325b7ae5f4d8f46ea986b04a57acad9a86a3","text":"Allow regexp_match[es]()/regexp_like()/regexp_replace()/regexp_count()/regexp_instr()/regexp_substr()/regexp_split_to_table()/regexp_split_to_array() to use named arguments (Jian He) §","title":"Allow regexp_match[es]()/regexp_like()/regexp_replace()/regexp_count()/regexp_instr()/regexp_substr()/regexp_split_to_table()/regexp_split_to_array() to use named arguments","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["cdb6b0fdb"],"commit_groups":[["cdb6b0fdb"]],"commits":["cdb6b0fdb"],"cves":[],"db_id":"4b86d214e32c355a269673a5aa3b2558","html":"\u003cp\u003eAdd function \u003ca href=\"/docs/18/libpq-status.html#LIBPQ-PQFULLPROTOCOLVERSION\"\u003e\u003ccode\u003ePQfullProtocolVersion()\u003c/code\u003e\u003c/a\u003e to report the full, including minor, protocol version number (Jacob Champion, Jelte Fennema-Nio) \u003ca href=\"https://postgr.es/c/cdb6b0fdb\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-0c1a57f2ceb09589","identity_text":"Add function PQfullProtocolVersion() to report the full, including minor, protocol version number (Jacob Champion, Jelte 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connection \u003ca href=\"/docs/18/libpq-connect.html#LIBPQ-CONNECT-SSL-MAX-PROTOCOL-VERSION\"\u003eparameters\u003c/a\u003e and \u003ca href=\"/docs/18/libpq-envars.html\" title=\"32.15. Environment Variables\"\u003eenvironment variables\u003c/a\u003e to specify the minimum and maximum acceptable protocol version for connections (Jelte Fennema-Nio) \u003ca href=\"https://postgr.es/c/285613c60\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/507034910\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-93af92d9546daff9","identity_text":"Add libpq connection parameters and environment variables to specify the minimum and maximum acceptable protocol version for connections (Jelte Fennema-Nio)","part":"changes","patch_ids":["534b2c53e2e1a92c27d124b03e588165","75729722b6f7aba5cfb305b2f8099d9d"],"related_changes":[],"relations":[],"section":"Libpq","section_path":["Libpq"],"source_commits":["285613c60","507034910"],"source_entry_id":"18.0/changes/118","source_hash":"dd8e24e0798022c5e49d33b8f037eae94f69ab39a4a885b8b176f5e16dbcf97e","source_url":"/docs/release/18.0/#RELEASE-18-LIBPQ","statement_hash":"5bc66e57f7b5710b779499207adb20134778a80ccd962165684afde348719556","text":"Add libpq connection parameters and environment variables to specify the minimum and maximum acceptable protocol version for connections (Jelte Fennema-Nio) § §","title":"Add libpq connection parameters and environment variables to specify the minimum and maximum acceptable protocol version for connections","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["0d06a7eac","28a1121fd"],"commit_groups":[["0d06a7eac"],["28a1121fd"]],"commits":["0d06a7eac","28a1121fd"],"cves":[],"db_id":"218352fe6746ce16b55b280a597a34c3","html":"\u003cp\u003eReport \u003ca href=\"/docs/18/runtime-config-client.html#GUC-SEARCH-PATH\"\u003esearch_path\u003c/a\u003e changes to the client (Alexander Kukushkin, Jelte Fennema-Nio, Tomas Vondra) \u003ca href=\"https://postgr.es/c/28a1121fd\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/0d06a7eac\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-207d234a979be0ba","identity_text":"Report guc-search-path changes to the client (Alexander Kukushkin, Jelte Fennema-Nio, Tomas Vondra)","part":"changes","patch_ids":["5ff7e1b21d24cbfadde9ec259d6a73c7","6773d35e5f3a311c7ff50c9c2faf3885"],"related_changes":[],"relations":[],"section":"Libpq","section_path":["Libpq"],"source_commits":["0d06a7eac","28a1121fd"],"source_entry_id":"18.0/changes/119","source_hash":"1b3b66fd3e804bfd9a8f8eb4900833f7becb2d7ae3e27f57d8450450272b7e24","source_url":"/docs/release/18.0/#RELEASE-18-LIBPQ","statement_hash":"50991c451a4bfb5e106b4ba60fe467da4d2e687a547ce099c82004fbe44fd3e9","text":"Report search_path changes to the client (Alexander Kukushkin, Jelte Fennema-Nio, Tomas Vondra) § §","title":"Report search_path changes to the client","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["7adec2d5f","a5c6b8f22","b8b3f861f","e87c14b19","ea92f3a0a"],"commit_groups":[["7adec2d5f"],["a5c6b8f22"],["b8b3f861f"],["e87c14b19"],["ea92f3a0a"]],"commits":["7adec2d5f","a5c6b8f22","b8b3f861f","e87c14b19","ea92f3a0a"],"cves":[],"db_id":"189544d0fbeb310833d8101ad81be81d","html":"\u003cp\u003eAdd \u003ca href=\"/docs/18/libpq-control.html#LIBPQ-PQTRACE\"\u003e\u003ccode\u003ePQtrace()\u003c/code\u003e\u003c/a\u003e output for all message types, including authentication (Jelte Fennema-Nio) \u003ca href=\"https://postgr.es/c/ea92f3a0a\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/a5c6b8f22\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/b8b3f861f\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/e87c14b19\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/7adec2d5f\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-beeeaad682b3e543","identity_text":"Add PQtrace() output for all message types, including authentication (Jelte Fennema-Nio)","part":"changes","patch_ids":["7830574fda35c2cd540f06ea5cd22fe7","acc865fe8e046c03d36dbaf9deafa10e","dccfa75590b5f88a141ec68c6abef022","ef0fcd62d83e5a9752310ce62aa470d2","f1361c9f5c56a8086363704e63d70cd9"],"related_changes":[],"relations":[],"section":"Libpq","section_path":["Libpq"],"source_commits":["7adec2d5f","a5c6b8f22","b8b3f861f","e87c14b19","ea92f3a0a"],"source_entry_id":"18.0/changes/120","source_hash":"229bf64e1d8e766cd4a7b64992dd7057c31c49ee08a766d973f0fed3a3136264","source_url":"/docs/release/18.0/#RELEASE-18-LIBPQ","statement_hash":"c5e10674404ba12ef5a21f94c4df6e89c062cf8daae10222475b36a39dda6485","text":"Add PQtrace() output for all message types, including authentication (Jelte Fennema-Nio) § § § § §","title":"Add PQtrace() output for all message types, including authentication","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2da74d8d6"],"commit_groups":[["2da74d8d6"]],"commits":["2da74d8d6"],"cves":[],"db_id":"dec95e8329f62b657fc15ccfb7d006fb","html":"\u003cp\u003eAdd libpq connection parameter \u003ca href=\"/docs/18/libpq-connect.html#LIBPQ-CONNECT-SSLKEYLOGFILE\"\u003e\u003ccode\u003esslkeylogfile\u003c/code\u003e\u003c/a\u003e which dumps out \u003cacronym\u003eSSL\u003c/acronym\u003e key material (Abhishek Chanda, Daniel Gustafsson) \u003ca href=\"https://postgr.es/c/2da74d8d6\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eThis is useful for debugging.\u003c/p\u003e","id":"18.0-ef7c9ed7c8f229dc","identity_text":"Add libpq connection parameter sslkeylogfile which dumps out SSL key material (Abhishek Chanda, Daniel Gustafsson) This is useful for 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This should not be used if the backups will be used independently.","title":"Add pg_combinebackup option -k/--link to enable hard linking","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["8dfd31290"],"commit_groups":[["8dfd31290"]],"commits":["8dfd31290"],"cves":[],"db_id":"4a31265bb9d301899f61cbb72dc938fe","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/app-pgverifybackup.html\" title=\"pg_verifybackup\"\u003e\u003cspan\u003e\u003cspan\u003epg_verifybackup\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e to verify tar-format backups (Amul Sul) \u003ca href=\"https://postgr.es/c/8dfd31290\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"18.0-75fede038d668a8d","identity_text":"Allow app-pgverifybackup to verify tar-format backups (Amul Sul)","part":"changes","patch_ids":["f61db0ff36a5aaba1fefc4551593c41a"],"related_changes":[],"relations":[],"section":"Server Applications","section_path":["Server 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used_in_xact indicates if the foreign data wrapper is being used by a current transaction, closed indicates if it is closed, user_name indicates the user name, and remote_backend_pid indicates the remote backend process identifier.","part":"changes","patch_ids":["69b3dae14669bd99116e5c32e7ce74b0","6a1a0a8505001d8b25302d12068877e7","c0a12ec1a2d53150c1b560fb21c4539c","d67e56f99dc5bb1eb71cebb589bee3a5"],"related_changes":[],"relations":[],"section":"Additional Modules","section_path":["Additional Modules"],"source_commits":["4f08ab554","857df3cef","c297a47c5","fe186bda7"],"source_entry_id":"18.0/changes/179","source_hash":"2757fb81880ea4eb26d1e4463218e9a19e266a0e629f94c057cb3aec12bcea56","source_url":"/docs/release/18.0/#RELEASE-18-MODULES","statement_hash":"3720900a35e82886147a69fd3730383d5206cad9f0e7aafdf9a19742425cfc42","text":"Add output columns to postgres_fdw_get_connections() (Hayato Kuroda, Sagar Dilip Shedge) § § § § New output column used_in_xact indicates if the foreign data wrapper is being used by a current transaction, closed indicates if it is closed, user_name indicates the user name, and remote_backend_pid indicates the remote backend process identifier.","title":"Add output columns to postgres_fdw_get_connections()","variants":[],"version":"18.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["761c79508"],"commit_groups":[["761c79508"]],"commits":["761c79508"],"cves":[],"db_id":"e470a9bf401deab26d02f6095d0d4417","html":"\u003cp\u003eAllow \u003ca href=\"/docs/18/auth-password.html\" title=\"20.5. Password Authentication\"\u003e\u003cacronym\u003eSCRAM\u003c/acronym\u003e\u003c/a\u003e authentication from the client to be passed to \u003ca href=\"/docs/18/postgres-fdw.html\" title=\"F.38. postgres_fdw — access data stored in external PostgreSQL servers\"\u003epostgres_fdw\u003c/a\u003e servers (Matheus Alcantara, Peter Eisentraut) \u003ca 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postgres_fdw use_scram_passthrough connection option. libpq uses new connection parameters libpq-connect-scram-client-key and libpq-connect-scram-server-key .","part":"changes","patch_ids":["af2270afccff9e2eee136add3ddf9516"],"related_changes":[],"relations":[],"section":"Additional Modules","section_path":["Additional Modules"],"source_commits":["761c79508"],"source_entry_id":"18.0/changes/180","source_hash":"5acf9481abc4c3c8dc1300ade55bcee491bededaef10ba7b4c9d16ee213d4b3f","source_url":"/docs/release/18.0/#RELEASE-18-MODULES","statement_hash":"7752ceee84e239333dabe3abd26dcd183aad92846d5412c6919e21ed04e49920","text":"Allow SCRAM authentication from the client to be passed to postgres_fdw servers (Matheus Alcantara, Peter Eisentraut) § This avoids storing postgres_fdw authentication information in the database, and is enabled with the postgres_fdw use_scram_passthrough connection option. libpq uses new connection parameters scram_client_key and scram_server_key.","title":"Allow SCRAM 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pg_buffercache_evict_all() to evict unpinned shared buffers (Nazir Bilal Yavuz) The existing function pg_buffercache_evict() now returns the buffer flush status.","part":"changes","patch_ids":["18bc743ec0e02f2bfdd5e711a373a351"],"related_changes":[],"relations":[],"section":"Additional Modules","section_path":["Additional Modules"],"source_commits":["dcf7e1697"],"source_entry_id":"18.0/changes/189","source_hash":"ff8384fcca3171ad9ba328245edab24a7394c982bd1ee80a16272f59622034c3","source_url":"/docs/release/18.0/#RELEASE-18-MODULES","statement_hash":"741214ec5c0080df2f48fe0ecb949fe4d8cc9dcffc25225e8d4f433bd4032752","text":"Add functions pg_buffercache_evict_relation() and pg_buffercache_evict_all() to evict unpinned shared buffers (Nazir Bilal Yavuz) § The existing function pg_buffercache_evict() now returns the buffer flush status.","title":"Add functions pg_buffercache_evict_relation() and pg_buffercache_evict_all() to evict unpinned shared 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See \u003ca href=\"/docs/18/upgrading.html\" title=\"18.6. Upgrading a PostgreSQL Cluster\"\u003eSection 18.6\u003c/a\u003e for general information on migrating to new major releases.\u003c/p\u003e\n\u003cp\u003eVersion 18 contains a number of changes that may affect compatibility with previous releases. Observe the following incompatibilities:\u003c/p\u003e\n\u003cdiv\u003e\n\u003c/div\u003e","minor":0,"placeholder":false,"source_as_of":"","source_url":"/docs/release/18.0/","status":"stable","status_label":"Supported","support_days":1463,"supported":true,"version":"18.0"},"total":210,"warnings":[]}