{"already_in_source_count":0,"candidate_count":182,"cross_major":false,"cve_available":true,"cve_count":0,"cves":[],"duplicate_count":0,"excluded_count":0,"exclusions":[],"from_release":null,"groups":[{"age_days":746,"build":"17.0","changes_count":165,"compatibility_count":17,"content_hash":"7b994321b45cd60ec1abd48e76a6e3181be4c8c23990ba3f2ca6117cbc9ca4bc","date":"2024-09-26","date_text":"2024-09-26","doc_git":"","doc_loaded_at":"2026-09-26T02:56:35.922301","entries":[{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["2af07e2f7","b4da732fd64"],"commit_groups":[["2af07e2f7"],["b4da732fd64"]],"commits":["2af07e2f7","b4da732fd64"],"cves":[],"db_id":"cc672acc2498ddd239d6c029f970bad5","html":"\u003cp\u003e更改函数，使其在维护操作期间使用安全的\u003ca href=\"/docs/17/runtime-config-client.html#GUC-SEARCH-PATH\"\u003esearch_path\u003c/a\u003e（Jeff Davis）\u003ca href=\"https://postgr.es/c/2af07e2f7\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/b4da732fd64\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这可防止维护操作（\u003ccode\u003eANALYZE\u003c/code\u003e、\u003ccode\u003eCLUSTER\u003c/code\u003e、\u003ccode\u003eCREATE INDEX\u003c/code\u003e、\u003ccode\u003eCREATE MATERIALIZED VIEW\u003c/code\u003e、\u003ccode\u003eREFRESH MATERIALIZED VIEW\u003c/code\u003e、\u003ccode\u003eREINDEX\u003c/code\u003e 或 \u003ccode\u003eVACUUM\u003c/code\u003e）执行不安全的访问。表达式索引和物化视图中使用、且需要引用非默认 schema 的函数，必须在创建函数时指定 search path。\u003c/p\u003e","id":"17.0-d922e984bf9c8012","identity_text":"Change functions to use a safe guc-search-path during maintenance operations (Jeff Davis) This prevents maintenance operations (ANALYZE, CLUSTER, CREATE INDEX, CREATE MATERIALIZED VIEW, REFRESH MATERIALIZED VIEW, REINDEX, or VACUUM) from performing unsafe access. 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time.","part":"migration","patch_ids":["301cd2650bab634dc780a6ba3c515916"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["a0363ab7a"],"source_entry_id":"17.0/migration/004","source_hash":"9f3d6d19c49c1ec62e4d87714e3d313b828647dd9e15902b1e8abf82f52aebb8","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"dd14af4a215b4aa555a4eef2befdad1c9e39a80c16149e7dad092532b873e830","text":"更改 SET SESSION AUTHORIZATION 对初始会话用户超级用户状态的处理方式（Joseph Koshakow）§ 新行为基于发出 SET SESSION AUTHORIZATION 命令时会话用户的超级用户状态，而不是其连接建立时的超级用户状态。","title":"更改 SET SESSION AUTHORIZATION 对初始会话用户超级用户状态的处理方式","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["884eee5bf"],"commit_groups":[["884eee5bf"]],"commits":["884eee5bf"],"cves":[],"db_id":"5f14c9997d29f2b62a899e7940c383cf","html":"\u003cp\u003e移除模拟每数据库用户的功能（Nathan Bossart）\u003ca 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III.","part":"migration","patch_ids":["667f69d4b75688c6317ae5d996a65e38"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["cc09e6549"],"source_entry_id":"17.0/migration/006","source_hash":"ad86e2f1db9961ad07f2a20a39ce25e940d3fe8bff8cf4fed136f0900a1b84d7","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"b675830b641f123992566dfa75b7b707a569d5aa68d9cf8407cf6231e92f53ab","text":"移除 contrib 扩展 adminpack（Daniel Gustafsson）§ 它曾由现已终止支持的 pgAdmin III 使用。","title":"移除 contrib 扩展 adminpack","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["d0c28601e"],"commit_groups":[["d0c28601e"]],"commits":["d0c28601e"],"cves":[],"db_id":"686b51dbf857b55e4493e96d25323fb7","html":"\u003cp\u003e在 \u003cspan\u003eWindows\u003c/span\u003e 上移除\u003ca href=\"/docs/17/runtime-config-wal.html#GUC-WAL-SYNC-METHOD\"\u003ewal_sync_method\u003c/a\u003e的 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上移除wal_sync_method的 fsync_writethrough 值","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["344afc776"],"commit_groups":[["344afc776"]],"commits":["344afc776"],"cves":[],"db_id":"74f74f51c54e1a4e800cca0d0dbad6e7","html":"\u003cp\u003e更改两个 \u003cacronym\u003eWAL\u003c/acronym\u003e 文件名函数对文件边界的处理方式（Kyotaro Horiguchi, Andres Freund, Bruce Momjian）\u003ca href=\"https://postgr.es/c/344afc776\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e当 \u003cacronym\u003eLSN\u003c/acronym\u003e 位于文件段边界时，\u003ca href=\"/docs/17/functions-admin.html#FUNCTIONS-ADMIN-BACKUP-TABLE\" title=\"表 9.95. 备份控制函数\"\u003e\u003ccode\u003epg_walfile_name()\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003epg_walfile_name_offset()\u003c/code\u003e 过去会报告前一个 \u003cacronym\u003eLSN\u003c/acronym\u003e 段号；现在则返回当前的 \u003cacronym\u003eLSN\u003c/acronym\u003e 段。\u003c/p\u003e","id":"17.0-3cd4e0f22454d285","identity_text":"Change file boundary 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Momjian)","part":"migration","patch_ids":["e330c9f64ec04f17a9e8c6bf697de7ac"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["15d5d7405"],"source_entry_id":"17.0/migration/011","source_hash":"bf48956f4ebcb4404280648ff4274a48c3ddb1d6379aebcb646aeb60412ced22","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"9ba42b8852d0d181fb7574e0a5324e18eeef4be71dd49f40491f0f940508798b","text":"更改 pgrowlocks 的锁模式输出标签（Bruce Momjian）§","title":"更改 pgrowlocks 的锁模式输出标签","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["74604a37f"],"commit_groups":[["74604a37f"]],"commits":["74604a37f"],"cves":[],"db_id":"14ab5d3b90b1ea855319d818eb76eab5","html":"\u003cp\u003e从 \u003ca href=\"/docs/17/monitoring-stats.html#MONITORING-PG-STAT-BGWRITER-VIEW\" title=\"27.2.14. pg_stat_bgwriter\"\u003e\u003ccode\u003epg_stat_bgwriter\u003c/code\u003e\u003c/a\u003e 中移除 \u003ccode\u003ebuffers_backend\u003c/code\u003e 和 \u003ccode\u003ebuffers_backend_fsync\u003c/code\u003e（Bharath Rupireddy）\u003ca href=\"https://postgr.es/c/74604a37f\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些字段被认为与 \u003ca href=\"/docs/17/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 中的类似列重复。\u003c/p\u003e","id":"17.0-efce6c2e39fd2d94","identity_text":"Remove buffers_backend and buffers_backend_fsync from pg_stat_bgwriter (Bharath Rupireddy) These fields are considered redundant to similar columns in pg_stat_io.","part":"migration","patch_ids":["abfd4307ea94a77be4159e6d64f933b5"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["74604a37f"],"source_entry_id":"17.0/migration/012","source_hash":"cc9214a923cc0764381fcdf9b2515a7e760e37a90a91916169ca50338a9c1050","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"17c3baca41bde637d84c1f675d6329efc1abaac3ea8d7b0059649d57205428f2","text":"从 pg_stat_bgwriter 中移除 buffers_backend 和 buffers_backend_fsync（Bharath Rupireddy）§ 这些字段被认为与 pg_stat_io 中的类似列重复。","title":"从 pg_stat_bgwriter 中移除 buffers_backend 和 buffers_backend_fsync","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["13d00729d"],"commit_groups":[["13d00729d"]],"commits":["13d00729d"],"cves":[],"db_id":"521858489a384102d9e8c61fd916177f","html":"\u003cp\u003e重命名 \u003cspan\u003e\u003ca href=\"/docs/17/pgstatstatements.html\" title=\"F.30. pg_stat_statements — 跟踪 SQL 计划和执行统计信息\"\u003epg_stat_statements\u003c/a\u003e\u003c/span\u003e 的 I/O 块读/写耗时统计列（Nazir Bilal Yavuz）\u003ca href=\"https://postgr.es/c/13d00729d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e即将 \u003ccode\u003eblk_read_time\u003c/code\u003e 重命名为 \u003ccode\u003eshared_blk_read_time\u003c/code\u003e，并将 \u003ccode\u003eblk_write_time\u003c/code\u003e 重命名为 \u003ccode\u003eshared_blk_write_time\u003c/code\u003e。\u003c/p\u003e","id":"17.0-3bc2316f8ee353e9","identity_text":"Rename I/O block read/write timing statistics columns of pgstatstatements (Nazir Bilal Yavuz) This renames blk_read_time to shared_blk_read_time, and blk_write_time to shared_blk_write_time.","part":"migration","patch_ids":["ab363262e882ed9cfaced4d6c5deda53"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["13d00729d"],"source_entry_id":"17.0/migration/013","source_hash":"3f6bc570146409810e5d6cb5f52cf5a0645b03ece5a11f10ab743c38ea6e2c4f","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"7a91b3290978bb385b007e52f8cd2e89093017ee02bdb6ffa835deade60c969f","text":"重命名 pg_stat_statements 的 I/O 块读/写耗时统计列（Nazir Bilal Yavuz）§ 即将 blk_read_time 重命名为 shared_blk_read_time，并将 blk_write_time 重命名为 shared_blk_write_time。","title":"重命名 pg_stat_statements 的 I/O 块读/写耗时统计列","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["012460ee9","4f622503d"],"commit_groups":[["012460ee9"],["4f622503d"]],"commits":["012460ee9","4f622503d"],"cves":[],"db_id":"55cac36d03b238bca53d532c65e1d15f","html":"\u003cp\u003e将 \u003ca href=\"/docs/17/catalog-pg-attribute.html\" title=\"51.7. pg_attribute\"\u003e\u003ccode\u003epg_attribute\u003c/code\u003e.\u003ccode\u003eattstattarget\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003epg_statistic_ext\u003c/code\u003e.\u003ccode\u003estxstattarget\u003c/code\u003e 表示默认统计目标的方式更改为 \u003ccode\u003eNULL\u003c/code\u003e（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/4f622503d\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/012460ee9\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-8e45fc51019a9684","identity_text":"Change pg_attribute.attstattarget and pg_statistic_ext.stxstattarget to represent the default statistics target as NULL (Peter Eisentraut)","part":"migration","patch_ids":["4d496fe2fd867ecb3ba5df367b723dd0","5ca9219021d08dfbe06ec44012775182"],"related_changes":[{"db_id":"6092816ce66efe9e474514c27d1edf89","evidence":{"patch_ids":["4d496fe2fd867ecb3ba5df367b723dd0"],"same_day":true},"kind":"related","label":"17.0","source_url":"/docs/release/17.0/#RELEASE-17-UTILITY","title":"为将列设置为默认统计目标添加更清晰的 ALTER TABLE 方法","url":"/docs/compare/?release=17.0#17.0-787ff7a0336bc432","version":"17.0"}],"relations":[{"evidence":{"patch_ids":["4d496fe2fd867ecb3ba5df367b723dd0"],"same_day":true},"rule":2,"target":"6092816ce66efe9e474514c27d1edf89","type":"related"}],"section":"兼容性","section_path":["兼容性"],"source_commits":["012460ee9","4f622503d"],"source_entry_id":"17.0/migration/014","source_hash":"ee9301abc5ba136b5310f2ba247b310e6f05a93b7eeb20e46912a9b9e1105ef2","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"9f8dd36740de6cc9002012a6b84508c090110858b69c66d48fe1b23559ef1ef2","text":"将 pg_attribute.attstattarget 和 pg_statistic_ext.stxstattarget 表示默认统计目标的方式更改为 NULL（Peter Eisentraut）§ §","title":"将 pg_attribute.attstattarget 和 pg_statistic_ext.stxstattarget 表示默认统计目标的方式更改为 NULL","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["f696c0cd5"],"commit_groups":[["f696c0cd5"]],"commits":["f696c0cd5"],"cves":[],"db_id":"2fc1ec23c0360d980ba0f5693d4723e3","html":"\u003cp\u003e将 \u003ca href=\"/docs/17/catalog-pg-collation.html\" title=\"51.12. pg_collation\"\u003e\u003ccode\u003epg_collation\u003c/code\u003e.\u003ccode\u003ecolliculocale\u003c/code\u003e\u003c/a\u003e 重命名为 \u003ccode\u003ecolllocale\u003c/code\u003e，并将 \u003ca href=\"/docs/17/catalog-pg-database.html\" title=\"51.15. pg_database\"\u003e\u003ccode\u003epg_database\u003c/code\u003e.\u003ccode\u003edaticulocale\u003c/code\u003e\u003c/a\u003e 重命名为 \u003ccode\u003edatlocale\u003c/code\u003e（Jeff Davis）\u003ca href=\"https://postgr.es/c/f696c0cd5\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-9b65a0870aed3d75","identity_text":"Rename pg_collation.colliculocale to colllocale and pg_database.daticulocale to datlocale (Jeff Davis)","part":"migration","patch_ids":["6bce4b4beb93e2fab15393aac74de9c5"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["f696c0cd5"],"source_entry_id":"17.0/migration/015","source_hash":"af8abeeb9a49d32e8211cd2706f29bb8263b9fd6192cf1c523b9f48c1970a015","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"31b5beb1310fee3f35abba7fc3e4072aadf5a7c7ff9cf5d19212d6ac49d4a3e7","text":"将 pg_collation.colliculocale 重命名为 colllocale，并将 pg_database.daticulocale 重命名为 datlocale（Jeff Davis）§","title":"将 pg_collation.colliculocale 重命名为 colllocale，并将 pg_database.daticulocale 重命名为 datlocale","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["667e65aac","f1affb670"],"commit_groups":[["667e65aac"],["f1affb670"]],"commits":["667e65aac","f1affb670"],"cves":[],"db_id":"8b815f87d891f86edf6d47ab77ead937","html":"\u003cp\u003e将 \u003ca href=\"/docs/17/progress-reporting.html#VACUUM-PROGRESS-REPORTING\" title=\"27.4.5. VACUUM 进度报告\"\u003e\u003ccode\u003epg_stat_progress_vacuum\u003c/code\u003e\u003c/a\u003e 的列 \u003ccode\u003emax_dead_tuples\u003c/code\u003e 重命名为 \u003ccode\u003emax_dead_tuple_bytes\u003c/code\u003e，将 \u003ccode\u003enum_dead_tuples\u003c/code\u003e 重命名为 \u003ccode\u003enum_dead_item_ids\u003c/code\u003e，并新增 \u003ccode\u003edead_tuple_bytes\u003c/code\u003e（Masahiko Sawada）\u003ca href=\"https://postgr.es/c/667e65aac\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/f1affb670\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-83ba247a819589ec","identity_text":"Rename pg_stat_progress_vacuum column max_dead_tuples to max_dead_tuple_bytes, rename num_dead_tuples to num_dead_item_ids, and add dead_tuple_bytes (Masahiko Sawada)","part":"migration","patch_ids":["19217bd878f4c23be2e5b3f9cf78a8c5","c3bd16b8d0e781c5494b9d539a9c8ca5"],"related_changes":[{"db_id":"0321eade032d4cb38972f9e735a7b2c6","evidence":{"ambiguous_patch_ids":["5d86834128896d8abb2bc88737d46417"],"patch_ids":["19217bd878f4c23be2e5b3f9cf78a8c5"],"same_day":true},"kind":"related","label":"17.0","source_url":"/docs/release/17.0/#RELEASE-17-PERFORMANCE","title":"允许 vacuum 更高效地存储元组引用","url":"/docs/compare/?release=17.0#17.0-fbfbfc68d8d0c85a","version":"17.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["5d86834128896d8abb2bc88737d46417"],"patch_ids":["19217bd878f4c23be2e5b3f9cf78a8c5"],"same_day":true},"rule":2,"target":"0321eade032d4cb38972f9e735a7b2c6","type":"related"}],"section":"兼容性","section_path":["兼容性"],"source_commits":["667e65aac","f1affb670"],"source_entry_id":"17.0/migration/016","source_hash":"65af897e2a50329f28af6aae9770ed9560293da4c8654adca7c0ddad884a339b","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"1ec0e026d2f88826348b7e2efb08134a22a0db506d06897ee4468704cc8a9a07","text":"将 pg_stat_progress_vacuum 的列 max_dead_tuples 重命名为 max_dead_tuple_bytes，将 num_dead_tuples 重命名为 num_dead_item_ids，并新增 dead_tuple_bytes（Masahiko Sawada）§ §","title":"将 pg_stat_progress_vacuum 的列 max_dead_tuples 重命名为 max_dead_tuple_bytes，将 num_dead_tuples 重命名为 num_dead_item_ids，并新增 dead_tuple_bytes","variants":[],"version":"17.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["bcdfa5f2e"],"commit_groups":[["bcdfa5f2e"]],"commits":["bcdfa5f2e"],"cves":[],"db_id":"e152ac4c1f5f8d987d2d4164db352c5d","html":"\u003cp\u003e重命名系统视图 \u003ca href=\"/docs/17/monitoring-stats.html#MONITORING-PG-STAT-SLRU-VIEW\" title=\"27.2.25. pg_stat_slru\"\u003e\u003ccode\u003epg_stat_slru\u003c/code\u003e\u003c/a\u003e 中的 \u003cacronym\u003eSLRU\u003c/acronym\u003e 列（Alvaro Herrera）\u003ca href=\"https://postgr.es/c/bcdfa5f2e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"/docs/17/monitoring-stats.html#MONITORING-STATS-FUNCS-TABLE\" title=\"表 27.36. 附加统计函数\"\u003e\u003ccode\u003epg_stat_reset_slru()\u003c/code\u003e\u003c/a\u003e 接受的列名也随之更改。\u003c/p\u003e","id":"17.0-3340286b2ddec381","identity_text":"Rename SLRU columns in system view pg_stat_slru (Alvaro Herrera) The column names accepted by pg_stat_reset_slru() are also changed.","part":"migration","patch_ids":["823fd6f92af518e49e4224ce249d8d5f"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["bcdfa5f2e"],"source_entry_id":"17.0/migration/017","source_hash":"a50a2fc722f62186e84169429a30b38153d552ded961651dc2e6c3f3837021d6","source_url":"/docs/release/17.0/#RELEASE-17-MIGRATION","statement_hash":"f9dfa9d3d7a6e9d7b97c2431147c8763d3306f572c9616d361cfbc7d62e22366","text":"重命名系统视图 pg_stat_slru 中的 SLRU 列（Alvaro Herrera）§ pg_stat_reset_slru() 接受的列名也随之更改。","title":"重命名系统视图 pg_stat_slru 中的 SLRU 列","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a65724dfa","f7816aec2"],"commit_groups":[["a65724dfa"],["f7816aec2"]],"commits":["a65724dfa","f7816aec2"],"cves":[],"db_id":"1bb1a2c448bb08cbe14be346046d20fd","html":"\u003cp\u003e允许优化器通过考虑较早行输出子句中所引用列的统计信息和排序顺序来改进 \u003cacronym\u003eCTE\u003c/acronym\u003e 计划（Jian Guo, Richard Guo, Tom Lane）\u003ca href=\"https://postgr.es/c/f7816aec2\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/a65724dfa\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-21f3d2b047f89aaf","identity_text":"Allow the optimizer to improve CTE plans by considering the statistics and sort order of columns referenced in earlier row output clauses (Jian Guo, Richard Guo, Tom Lane)","part":"changes","patch_ids":["dd6efb8af27f478ece630d77b62169aa","e36c8e7bc021005d10ff030521cc9739"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["a65724dfa","f7816aec2"],"source_entry_id":"17.0/changes/001","source_hash":"eb7e5faf6f425197daedcb76b78cbc39f042ce8562cdef12882543b7d7b4070e","source_url":"/docs/release/17.0/#RELEASE-17-OPTIMIZER","statement_hash":"4bf0f103f215559ebf931992edf6c51246aefce339d92536b4458efdd2e66ee7","text":"允许优化器通过考虑较早行输出子句中所引用列的统计信息和排序顺序来改进 CTE 计划（Jian Guo, Richard Guo, Tom Lane）§ §","title":"允许优化器通过考虑较早行输出子句中所引用列的统计信息和排序顺序来改进 CTE 计划","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["3af704098","b262ad440"],"commit_groups":[["3af704098"],["b262ad440"]],"commits":["3af704098","b262ad440"],"cves":[],"db_id":"6a8a68dcc3d0afa8fe41f9c0cb346cdb","html":"\u003cp\u003e改进对 \u003ccode\u003eIS NOT NULL\u003c/code\u003e 和 \u003ccode\u003eIS NULL\u003c/code\u003e 查询限制条件的优化（David Rowley, Richard Guo, Andy Fan）\u003ca href=\"https://postgr.es/c/b262ad440\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/3af704098\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e从对 \u003ccode\u003eNOT NULL\u003c/code\u003e 列的查询中移除 \u003ccode\u003eIS NOT NULL\u003c/code\u003e 限制条件，并在指定 \u003ccode\u003eIS NULL\u003c/code\u003e 时消除对 \u003ccode\u003eNOT NULL\u003c/code\u003e 列的扫描。\u003c/p\u003e","id":"17.0-cba148decc6176eb","identity_text":"Improve optimization of IS NOT NULL and IS NULL query restrictions (David Rowley, Richard Guo, Andy Fan) Remove IS NOT NULL restrictions from queries on NOT NULL columns and eliminate scans on NOT NULL columns if IS NULL is specified.","part":"changes","patch_ids":["f0600bde890998500bbb618c1b685216","ff7fbff5acc4e14db82db8a232d3033c"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["3af704098","b262ad440"],"source_entry_id":"17.0/changes/002","source_hash":"7c05c9caff1d1ce0caea80d6711c0798c93c60e752dd8c7418b054db78b85639","source_url":"/docs/release/17.0/#RELEASE-17-OPTIMIZER","statement_hash":"5b89ca77e9383dc291180695491f866ffe59cf3f577677d5b7c4ce737ae70704","text":"改进对 IS NOT NULL 和 IS NULL 查询限制条件的优化（David Rowley, Richard Guo, Andy Fan）§ § 从对 NOT NULL 列的查询中移除 IS NOT NULL 限制条件，并在指定 IS NULL 时消除对 NOT NULL 列的扫描。","title":"改进对 IS NOT NULL 和 IS NULL 查询限制条件的优化","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["07c36c133"],"commit_groups":[["07c36c133"]],"commits":["07c36c133"],"cves":[],"db_id":"afda858770617dec4b1376034bb38216","html":"\u003cp\u003e允许在布尔列的 \u003ccode\u003eIS [NOT] UNKNOWN\u003c/code\u003e 条件下进行分区剪枝（David Rowley）\u003ca href=\"https://postgr.es/c/07c36c133\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-29e5b755857cf8f0","identity_text":"Allow partition pruning on boolean columns on IS [NOT] UNKNOWN conditionals (David Rowley)","part":"changes","patch_ids":["8ed535aa9c37315fc74364911854ff1a"],"related_changes":[],"relations":[],"section":"服务器 / 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href=\"https://postgr.es/c/30e144287\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/667e65aac\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/6dbb49026\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e此外，当\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-MAINTENANCE-WORK-MEM\"\u003emaintenance_work_mem\u003c/a\u003e或\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-AUTOVACUUM-WORK-MEM\"\u003eautovacuum_work_mem\u003c/a\u003e更高时，vacuum 不再被静默限制为最多使用 1 GB 内存。\u003c/p\u003e","id":"17.0-fbfbfc68d8d0c85a","identity_text":"Allow vacuum to more efficiently store tuple references (Masahiko Sawada, John Naylor) Additionally, vacuum is no longer silently limited to one gigabyte of memory when guc-maintenance-work-mem or guc-autovacuum-work-mem are 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服务器配置","section_path":["服务器","服务器配置"],"source_commits":["2d870b4ae"],"source_entry_id":"17.0/changes/034","source_hash":"5f355187378d93868a4a735da861f0b9756a645332b772d73b1a693de5a16923","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"81b4c4a9af4b2cc85dac9d6228b2b19809d7bf4f1c7c31ea9113f4c316922600","text":"允许 ALTER SYSTEM 设置未识别的自定义服务器变量（Tom Lane）§ 这也可以通过 GRANT ON PARAMETER 实现。","title":"允许 ALTER SYSTEM 设置未识别的自定义服务器变量","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["28e858c0f","51efe38cb","bf82f4379"],"commit_groups":[["28e858c0f"],["51efe38cb"],["bf82f4379"]],"commits":["28e858c0f","51efe38cb","bf82f4379"],"cves":[],"db_id":"718259631ded99b83361d9b63bd7fc36","html":"\u003cp\u003e添加服务器变量\u003ca href=\"/docs/17/runtime-config-client.html#GUC-TRANSACTION-TIMEOUT\"\u003etransaction_timeout\u003c/a\u003e，以限制事务持续时间（Andrey Borodin, Japin Li, Junwang Zhao, Alexander Korotkov）\u003ca href=\"https://postgr.es/c/51efe38cb\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/bf82f4379\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/28e858c0f\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-0efb5f0f3651ed18","identity_text":"Add server variable guc-transaction-timeout to restrict the duration of transactions (Andrey Borodin, Japin Li, Junwang Zhao, Alexander Korotkov)","part":"changes","patch_ids":["0c1e32e9c9b95597272ee20eaf39589f","87004e34539666104318fc5a57fe0afa","ffd30a9d40012c5126cd91352005d8de"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["28e858c0f","51efe38cb","bf82f4379"],"source_entry_id":"17.0/changes/035","source_hash":"7efb34482473dc8d860ad251f06b16387566a0c5cecbacc45c4847699d4eca42","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"72d219d30d9e9405506944e5452bf1f7437dd8c634c2e7e22989da39ad97a388","text":"添加服务器变量transaction_timeout，以限制事务持续时间（Andrey Borodin, Japin Li, Junwang Zhao, Alexander Korotkov）§ § §","title":"添加服务器变量transaction_timeout，以限制事务持续时间","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2d819a08a","846311051","9acae56ce","f69319f2f"],"commit_groups":[["2d819a08a"],["846311051"],["9acae56ce"],["f69319f2f"]],"commits":["2d819a08a","846311051","9acae56ce","f69319f2f"],"cves":[],"db_id":"80852fc36fa7987f1b089fc75f650204","html":"\u003cp\u003e添加内置的平台无关排序规则提供者（Jeff Davis）\u003ca href=\"https://postgr.es/c/2d819a08a\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/846311051\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/f69319f2f\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/9acae56ce\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这支持 \u003ccode\u003eC\u003c/code\u003e 和 \u003ccode\u003eC.UTF-8\u003c/code\u003e 排序规则。\u003c/p\u003e","id":"17.0-e062739079980155","identity_text":"Add a builtin platform-independent collation provider (Jeff Davis) This supports C and C.UTF-8 collations.","part":"changes","patch_ids":["77be7335caaca5f9f06322d0797dda16","81b6c4acbac9af2cc2bfef96cfd4b979","c6ec2a1be78682d39fea62d97b958f98","d64c324506fdd1d1f8e1dd79d3f4cfbe"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["2d819a08a","846311051","9acae56ce","f69319f2f"],"source_entry_id":"17.0/changes/036","source_hash":"15e2a4736d4126ffb9a59333bece9b7c6bb80c6464d093d609cead3be54ea0bc","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"fbdf39f367ad8a7a21b34d7dc4dc5678b7f15eb4badce77f508c44b61e86d345","text":"添加内置的平台无关排序规则提供者（Jeff Davis）§ § § § 这支持 C 和 C.UTF-8 排序规则。","title":"添加内置的平台无关排序规则提供者","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a14354cac"],"commit_groups":[["a14354cac"]],"commits":["a14354cac"],"cves":[],"db_id":"586987595a4170d7f74933b5f5dd5a46","html":"\u003cp\u003e添加服务器变量\u003ca href=\"/docs/17/runtime-config-preset.html#GUC-HUGE-PAGES-STATUS\"\u003ehuge_pages_status\u003c/a\u003e，用于报告 Postgres 对 huge pages 的使用情况（Justin Pryzby）\u003ca href=\"https://postgr.es/c/a14354cac\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e当\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-HUGE-PAGES\"\u003ehuge_pages\u003c/a\u003e设置为 \u003ccode\u003etry\u003c/code\u003e 时，这很有用。\u003c/p\u003e","id":"17.0-21b14577a5530135","identity_text":"Add server variable guc-huge-pages-status to report the use of huge pages by Postgres (Justin Pryzby) This is useful when guc-huge-pages is set to try.","part":"changes","patch_ids":["89c68b0b4082f533e10998c466dd35b6"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["a14354cac"],"source_entry_id":"17.0/changes/037","source_hash":"122def5713c23eca2319d4626106646ed060bb64889d75fb851f397cb0ca7aff","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"9a20765c86381cbf363b707e1acc20d471444cfb30caed24a1ba11b2246d2dd7","text":"添加服务器变量huge_pages_status，用于报告 Postgres 对 huge pages 的使用情况（Justin Pryzby）§ 当huge_pages设置为 try 时，这很有用。","title":"添加服务器变量huge_pages_status，用于报告 Postgres 对 huge pages 的使用情况","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["7750fefdb"],"commit_groups":[["7750fefdb"]],"commits":["7750fefdb"],"cves":[],"db_id":"4b72618efd9956e3f676b7b80a796d3f","html":"\u003cp\u003e添加用于禁用事件触发器的服务器变量（Daniel Gustafsson）\u003ca href=\"https://postgr.es/c/7750fefdb\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e该设置\u003ca href=\"/docs/17/runtime-config-client.html#GUC-EVENT-TRIGGERS\"\u003eevent_triggers\u003c/a\u003e允许为调试目的临时禁用事件触发器。\u003c/p\u003e","id":"17.0-731c9e8a5142f36d","identity_text":"Add server variable to disable event triggers (Daniel Gustafsson) The setting, guc-event-triggers , allows for the temporary disabling of event triggers for debugging.","part":"changes","patch_ids":["8a7e47813e342e8c2228ebfe7fb76262"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["7750fefdb"],"source_entry_id":"17.0/changes/038","source_hash":"ce85c487050389af10d7375dba26b6b3636e76b8910d87d57f2ee1733b61b1e3","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"a78fa35cf15a5c3a4d0f75d835c41c9257e8b5eff0454787a9a089070f104ae2","text":"添加用于禁用事件触发器的服务器变量（Daniel Gustafsson）§ 该设置event_triggers允许为调试目的临时禁用事件触发器。","title":"添加用于禁用事件触发器的服务器变量","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["53c2a97a9"],"commit_groups":[["53c2a97a9"]],"commits":["53c2a97a9"],"cves":[],"db_id":"054128c86cceaeccedc6fb785d67772f","html":"\u003cp\u003e允许配置 \u003ca href=\"/docs/17/monitoring-stats.html#MONITORING-PG-STAT-SLRU-VIEW\" title=\"27.2.25. pg_stat_slru\"\u003e\u003cacronym\u003eSLRU\u003c/acronym\u003e\u003c/a\u003e 缓存大小（Andrey Borodin, Dilip Kumar, Alvaro Herrera）\u003ca href=\"https://postgr.es/c/53c2a97a9\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e新的服务器变量包括\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-COMMIT-TIMESTAMP-BUFFERS\"\u003ecommit_timestamp_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-MULTIXACT-MEMBER-BUFFERS\"\u003emultixact_member_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-MULTIXACT-OFFSET-BUFFERS\"\u003emultixact_offset_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-NOTIFY-BUFFERS\"\u003enotify_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-SERIALIZABLE-BUFFERS\"\u003eserializable_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-SUBTRANSACTION-BUFFERS\"\u003esubtransaction_buffers\u003c/a\u003e和\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-TRANSACTION-BUFFERS\"\u003etransaction_buffers\u003c/a\u003e。\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-COMMIT-TIMESTAMP-BUFFERS\"\u003ecommit_timestamp_buffers\u003c/a\u003e、\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-TRANSACTION-BUFFERS\"\u003etransaction_buffers\u003c/a\u003e以及\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-SUBTRANSACTION-BUFFERS\"\u003esubtransaction_buffers\u003c/a\u003e会随着\u003ca href=\"/docs/17/runtime-config-resource.html#GUC-SHARED-BUFFERS\"\u003eshared_buffers\u003c/a\u003e自动扩展。\u003c/p\u003e","id":"17.0-f4a8d2364b8c4112","identity_text":"Allow the SLRU cache sizes to be configured (Andrey Borodin, Dilip Kumar, Alvaro Herrera) The new server variables are guc-commit-timestamp-buffers , guc-multixact-member-buffers , guc-multixact-offset-buffers , guc-notify-buffers , guc-serializable-buffers , guc-subtransaction-buffers , and guc-transaction-buffers . guc-commit-timestamp-buffers , guc-transaction-buffers , and guc-subtransaction-buffers scale up automatically with guc-shared-buffers .","part":"changes","patch_ids":["d22fe7881bafeca870baef76553a72ff"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["53c2a97a9"],"source_entry_id":"17.0/changes/039","source_hash":"6882b1afc0cfb0edf0a305155b1bfeee49505c75e159d2908fe7dded3370087d","source_url":"/docs/release/17.0/#RELEASE-17-SERVER-CONFIG","statement_hash":"7b33810afb851570f8c712e0489c6284bff4903bfc6947e2ceae3d857387e453","text":"允许配置 SLRU 缓存大小（Andrey Borodin, Dilip Kumar, Alvaro Herrera）§ 新的服务器变量包括commit_timestamp_buffers、multixact_member_buffers、multixact_offset_buffers、notify_buffers、serializable_buffers、subtransaction_buffers和transaction_buffers。commit_timestamp_buffers、transaction_buffers以及subtransaction_buffers会随着shared_buffers自动扩展。","title":"允许配置 SLRU 缓存大小","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["dc2123400","f8ce4ed78"],"commit_groups":[["dc2123400"],["f8ce4ed78"]],"commits":["dc2123400","f8ce4ed78"],"cves":[],"db_id":"908cc33787f32c9dcd434c9726b2a90a","html":"\u003cp\u003e添加对增量文件系统备份的支持（Robert Haas, Jakub Wartak, Tomas Vondra）\u003ca href=\"https://postgr.es/c/dc2123400\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/f8ce4ed78\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e可使用\u003ca href=\"/docs/17/app-pgbasebackup.html\" title=\"pg_basebackup\"\u003e\u003cspan\u003epg_basebackup\u003c/span\u003e\u003c/a\u003e的新 \u003ccode\u003e--incremental\u003c/code\u003e 选项创建增量备份。新的应用程序\u003ca href=\"/docs/17/app-pgcombinebackup.html\" title=\"pg_combinebackup\"\u003e\u003cspan\u003epg_combinebackup\u003c/span\u003e\u003c/a\u003e允许处理基础和增量文件系统备份。\u003c/p\u003e","id":"17.0-9e98f7b93fb6d8ea","identity_text":"Add support for incremental file system backup (Robert Haas, Jakub Wartak, Tomas Vondra) Incremental backups can be created using pg_basebackup's new --incremental option. The new application pg_combinebackup allows manipulation of base and incremental file system backups.","part":"changes","patch_ids":["141a067a67701032cf5092dd3dabd2d3","3a11cab0d645672e4c0425fc530066ea"],"related_changes":[],"relations":[],"section":"服务器 / 流复制与恢复","section_path":["服务器","流复制与恢复"],"source_commits":["dc2123400","f8ce4ed78"],"source_entry_id":"17.0/changes/040","source_hash":"53d4d6706e095584dad9b5a2c18559f1d8203b3a29895b8f3731da02db40d59c","source_url":"/docs/release/17.0/#RELEASE-17-REPLICATION","statement_hash":"76b76f7c699fb0ae8c99f721ad1e57cd1f5f3d11b1b1dc8d260d95046b38e08a","text":"添加对增量文件系统备份的支持（Robert Haas, Jakub Wartak, Tomas Vondra）§ § 可使用pg_basebackup的新 --incremental 选项创建增量备份。新的应用程序pg_combinebackup允许处理基础和增量文件系统备份。","title":"添加对增量文件系统备份的支持","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["174c48050","d97ef756a","d9ef650fc","f896057e4"],"commit_groups":[["174c48050"],["d97ef756a"],["d9ef650fc"],["f896057e4"]],"commits":["174c48050","d97ef756a","d9ef650fc","f896057e4"],"cves":[],"db_id":"3cfae481b9dc3952fd1d2d10c2226677","html":"\u003cp\u003e允许创建 \u003cacronym\u003eWAL\u003c/acronym\u003e 摘要文件（Robert Haas, Nathan Bossart, Hubert Depesz Lubaczewski）\u003ca href=\"https://postgr.es/c/174c48050\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d97ef756a\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/f896057e4\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d9ef650fc\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些文件记录某个 \u003ca href=\"/docs/17/datatype-pg-lsn.html\" title=\"8.20. pg_lsn 类型\"\u003e\u003cacronym\u003eLSN\u003c/acronym\u003e\u003c/a\u003e 范围内发生变化的块号，对增量文件系统备份很有用。这由服务器变量\u003ca href=\"/docs/17/runtime-config-wal.html#GUC-SUMMARIZE-WAL\"\u003esummarize_wal\u003c/a\u003e和\u003ca href=\"/docs/17/runtime-config-wal.html#GUC-WAL-SUMMARY-KEEP-TIME\"\u003ewal_summary_keep_time\u003c/a\u003e控制，并可通过 \u003ca href=\"/docs/17/functions-info.html#FUNCTIONS-WAL-SUMMARY\" title=\"表 9.92. WAL 汇总信息函数\"\u003e\u003ccode\u003epg_available_wal_summaries()\u003c/code\u003e\u003c/a\u003e、\u003ccode\u003epg_wal_summary_contents()\u003c/code\u003e 和 \u003ccode\u003epg_get_wal_summarizer_state()\u003c/code\u003e 进行查看。\u003c/p\u003e","id":"17.0-d8db67c4766dcbd2","identity_text":"Allow the creation of WAL summarization files (Robert Haas, Nathan Bossart, Hubert Depesz Lubaczewski) These files record the block numbers that have changed within an LSN range and are useful for incremental file system backups. This is controlled by the server variables guc-summarize-wal and guc-wal-summary-keep-time , and introspected with pg_available_wal_summaries(), pg_wal_summary_contents(), and pg_get_wal_summarizer_state().","part":"changes","patch_ids":["0af30f6d76f12ddff15d80cbf3011abd","33f4516b6fa2cf93517d67160d2141ba","4872bf1a258073370c7c0f5e333d405b","8e2191b43c1299f8168150eaebfcc93f"],"related_changes":[],"relations":[],"section":"服务器 / 流复制与恢复","section_path":["服务器","流复制与恢复"],"source_commits":["174c48050","d97ef756a","d9ef650fc","f896057e4"],"source_entry_id":"17.0/changes/041","source_hash":"e957080e4a8ff4a994bf36bded8570d4e66a1f39225fc5ab1c66c981d9fa3797","source_url":"/docs/release/17.0/#RELEASE-17-REPLICATION","statement_hash":"36d2ae84e4b827b48279c35dd15f6e680f1ee0571436c70ceca91d3823845a52","text":"允许创建 WAL 摘要文件（Robert Haas, Nathan Bossart, Hubert Depesz Lubaczewski）§ § § § 这些文件记录某个 LSN 范围内发生变化的块号，对增量文件系统备份很有用。这由服务器变量summarize_wal和wal_summary_keep_time控制，并可通过 pg_available_wal_summaries()、pg_wal_summary_contents() 和 pg_get_wal_summarizer_state() 进行查看。","title":"允许创建 WAL 摘要文件","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2041bc427"],"commit_groups":[["2041bc427"]],"commits":["2041bc427"],"cves":[],"db_id":"6e2a2dd91621a281b6443f6be9448cdf","html":"\u003cp\u003e将系统标识符添加到文件系统 \u003ca href=\"/docs/17/backup-manifest-format.html\" title=\"第 69 章 备份清单格式\"\u003ebackup manifest\u003c/a\u003e 文件中（Amul Sul）\u003ca href=\"https://postgr.es/c/2041bc427\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这有助于检测无效的 \u003cacronym\u003eWAL\u003c/acronym\u003e 使用。\u003c/p\u003e","id":"17.0-c087b4f1d9cedbdb","identity_text":"Add the system identifier to file system backup manifest files (Amul Sul) This helps detect invalid WAL usage.","part":"changes","patch_ids":["52e80dff2dc717149b68413fccf953b2"],"related_changes":[],"relations":[],"section":"服务器 / 流复制与恢复","section_path":["服务器","流复制与恢复"],"source_commits":["2041bc427"],"source_entry_id":"17.0/changes/042","source_hash":"39983d93905cbdf2473bf697e5107733e558dee8ca0ba47c7ab7360dd505aa78","source_url":"/docs/release/17.0/#RELEASE-17-REPLICATION","statement_hash":"2e6e5badf7c93a9f7c90153ea649e08320978b670481f36c4cdc885137c0f6dd","text":"将系统标识符添加到文件系统 backup manifest 文件中（Amul Sul）§ 这有助于检测无效的 WAL 使用。","title":"将系统标识符添加到文件系统 backup manifest 文件中","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a145f424d"],"commit_groups":[["a145f424d"]],"commits":["a145f424d"],"cves":[],"db_id":"df5b4c592c2663c6b6b2966294706337","html":"\u003cp\u003e允许在\u003ca href=\"/docs/17/app-pgbasebackup.html\" title=\"pg_basebackup\"\u003e\u003cspan\u003epg_basebackup\u003c/span\u003e\u003c/a\u003e将连接信息写入 \u003ccode\u003epostgresql.auto.conf\u003c/code\u003e 时写入连接字符串值 \u003ccode\u003edbname\u003c/code\u003e（Vignesh C, Hayato Kuroda）\u003ca href=\"https://postgr.es/c/a145f424d\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-153d175118664d9f","identity_text":"Allow connection string value dbname to be written when pg_basebackup writes connection information to postgresql.auto.conf (Vignesh C, Hayato Kuroda)","part":"changes","patch_ids":["8a96c256ee8468512b69f6e4ee3bcbdd"],"related_changes":[],"relations":[],"section":"服务器 / 流复制与恢复","section_path":["服务器","流复制与恢复"],"source_commits":["a145f424d"],"source_entry_id":"17.0/changes/043","source_hash":"f5a4189f6ac58a70012aeb1c9a3ae0f4f7b551fa57b3ad15025326d9d6fd83e2","source_url":"/docs/release/17.0/#RELEASE-17-REPLICATION","statement_hash":"64810eaaeb8732246523d4b5acee711061833d0ccf9fdd227710930a3cdaaff0","text":"允许在pg_basebackup将连接信息写入 postgresql.auto.conf 时写入连接字符串值 dbname（Vignesh C, Hayato Kuroda）§","title":"允许在pg_basebackup将连接信息写入 postgresql.auto.conf 时写入连接字符串值 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这会强制重新认证。","title":"如果撤销订阅所有者的超级用户权限，则重启应用工作进程","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["173b56f1e"],"commit_groups":[["173b56f1e"]],"commits":["173b56f1e"],"cves":[],"db_id":"d85be09c70a59028ea78df7318a28627","html":"\u003cp\u003e为 \u003ca href=\"/docs/17/functions-admin.html#FUNCTIONS-REPLICATION-TABLE\" title=\"表 9.99. 复制管理函数\"\u003e\u003ccode\u003epg_logical_emit_message()\u003c/code\u003e\u003c/a\u003e 添加 \u003ccode\u003eflush\u003c/code\u003e 选项（Michael Paquier）\u003ca href=\"https://postgr.es/c/173b56f1e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这会使该消息具有持久性。\u003c/p\u003e","id":"17.0-b66a05a4072c8a24","identity_text":"Add flush option to pg_logical_emit_message() (Michael Paquier) This makes the message durable.","part":"changes","patch_ids":["d5627808d42f38ca807d7013e994b1ab"],"related_changes":[],"relations":[],"section":"服务器 / 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新的服务器变量是synchronized_standby_slots。","title":"允许指定在对订阅者可见之前必须先完成同步的物理备库","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["13aeaf079"],"commit_groups":[["13aeaf079"]],"commits":["13aeaf079"],"cves":[],"db_id":"c96da6b6d0807ab405a7877449d5df44","html":"\u003cp\u003e为 \u003ca href=\"/docs/17/monitoring-stats.html#MONITORING-PG-STAT-SUBSCRIPTION\" title=\"27.2.8. pg_stat_subscription\"\u003e\u003ccode\u003epg_stat_subscription\u003c/code\u003e\u003c/a\u003e 添加工作进程类型列（Peter Smith）\u003ca href=\"https://postgr.es/c/13aeaf079\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-88a693b64faf728c","identity_text":"Add worker type column to pg_stat_subscription (Peter Smith)","part":"changes","patch_ids":["b137ed957df07f42c12c231224879bfc"],"related_changes":[],"relations":[],"section":"服务器 / 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这在以前是不允许的。","title":"如果该类型是在同一事务中创建的，则允许使用通过 ALTER TYPE 新增的 ENUM 值","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["5f2e179bd"],"commit_groups":[["5f2e179bd"]],"commits":["5f2e179bd"],"cves":[],"db_id":"d6ae6c853adaf39f35ba6ae35112094c","html":"\u003cp\u003e允许 \u003ccode\u003eMERGE\u003c/code\u003e 修改可更新视图（Dean Rasheed）\u003ca href=\"https://postgr.es/c/5f2e179bd\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-f678dfc6392caa4d","identity_text":"Allow MERGE to modify updatable views (Dean 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\u003ccode\u003eWHEN NOT MATCHED\u003c/code\u003e。\u003c/p\u003e","id":"17.0-562401d3e7ee1c60","identity_text":"Add WHEN NOT MATCHED BY SOURCE to MERGE (Dean Rasheed) WHEN NOT MATCHED on target rows was already supported.","part":"changes","patch_ids":["de2d02cea48c4be3dd7df067cd971800"],"related_changes":[],"relations":[],"section":"MERGE","section_path":["MERGE"],"source_commits":["0294df2f1"],"source_entry_id":"17.0/changes/080","source_hash":"8ef1e26d38e863b544f0e125e1251ceaa64e9e5c824c4915f85724da77dcead4","source_url":"/docs/release/17.0/#RELEASE-17-MERGE","statement_hash":"cada5f1d9f0edc113c09a36c592fba8e5ef5d012b10b6271f1c6af7f11f327ed","text":"为 MERGE 添加 WHEN NOT MATCHED BY SOURCE（Dean Rasheed）§ 以前已经支持在目标行上使用 WHEN NOT MATCHED。","title":"为 MERGE 添加 WHEN NOT MATCHED BY 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row.","part":"changes","patch_ids":["9b6645a437b79d8fa2c57824a45c59e3"],"related_changes":[],"relations":[],"section":"MERGE","section_path":["MERGE"],"source_commits":["c649fa24a"],"source_entry_id":"17.0/changes/081","source_hash":"0ed35771443ac01bb89c6249564ad4e3cdfe7a5d39b142e751055c63c83a78a4","source_url":"/docs/release/17.0/#RELEASE-17-MERGE","statement_hash":"613d6ca6525351d206e387de3bbbbd36934a63b88a05a516969d9c7b3f07e9f2","text":"允许 MERGE 使用 RETURNING 子句（Dean Rasheed）§ 新的 RETURNING 函数 merge_action() 会报告生成该行的 DML 操作。","title":"允许 MERGE 使用 RETURNING 子句","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["bb766cde6","de3600452"],"commit_groups":[["bb766cde6"],["de3600452"]],"commits":["bb766cde6","de3600452"],"cves":[],"db_id":"f81a9564db2ca7fd0b33004b18e5f87b","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-json.html#FUNCTIONS-SQLJSON-TABLE\" 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JSON_VALUE()","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["66ea94e8e"],"commit_groups":[["66ea94e8e"]],"commits":["66ea94e8e"],"cves":[],"db_id":"cf230e53eba840d6dc4a5db3dc7855b6","html":"\u003cp\u003e添加 \u003ca href=\"/docs/17/functions-json.html#FUNCTIONS-SQLJSON-PATH-OPERATORS\" title=\"9.16.2.3. SQL/JSON 路径操作符和方法\"\u003ejsonpath\u003c/a\u003e 方法，用于将 \u003ccode\u003eJSON\u003c/code\u003e 值转换为其他数据类型（Jeevan Chalke）\u003ca href=\"https://postgr.es/c/66ea94e8e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些 jsonpath 方法包括 \u003ccode\u003e.bigint()\u003c/code\u003e、\u003ccode\u003e.boolean()\u003c/code\u003e、\u003ccode\u003e.date()\u003c/code\u003e、\u003ccode\u003e.decimal([precision [, scale]])\u003c/code\u003e、\u003ccode\u003e.integer()\u003c/code\u003e、\u003ccode\u003e.number()\u003c/code\u003e、\u003ccode\u003e.string()\u003c/code\u003e、\u003ccode\u003e.time()\u003c/code\u003e、\u003ccode\u003e.time_tz()\u003c/code\u003e、\u003ccode\u003e.timestamp()\u003c/code\u003e、以及 \u003ccode\u003e.timestamp_tz()\u003c/code\u003e。\u003c/p\u003e","id":"17.0-671eb1d0eabe7589","identity_text":"Add jsonpath methods to convert JSON values to other JSON data types (Jeevan Chalke) The jsonpath methods are .bigint(), .boolean(), .date(), .decimal([precision [, scale]]), .integer(), .number(), .string(), .time(), .time_tz(), .timestamp(), and .timestamp_tz().","part":"changes","patch_ids":["508b378763d6201a25a6d3f302d6aef0"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["66ea94e8e"],"source_entry_id":"17.0/changes/085","source_hash":"6299725100304538ac11191f4687474c5aa2badab23efb9be0d0541d1518d170","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"170c8a60fe7819d38cf5ec8af4189a18358a1ee9f890bedf1c3ebcaeb13203da","text":"添加 jsonpath 方法，用于将 JSON 值转换为其他数据类型（Jeevan Chalke）§ 这些 jsonpath 方法包括 .bigint()、.boolean()、.date()、.decimal([precision [, scale]])、.integer()、.number()、.string()、.time()、.time_tz()、.timestamp()、以及 .timestamp_tz()。","title":"添加 jsonpath 方法，用于将 JSON 值转换为其他数据类型","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["8ba6fdf90"],"commit_groups":[["8ba6fdf90"]],"commits":["8ba6fdf90"],"cves":[],"db_id":"6560f09c8fbe53b0bd652ce7c2b89173","html":"\u003cp\u003e为 \u003ca href=\"/docs/17/functions-formatting.html#FUNCTIONS-FORMATTING-TABLE\" title=\"表 9.26. 格式化函数\"\u003e\u003ccode\u003eto_timestamp()\u003c/code\u003e\u003c/a\u003e 添加时区格式说明符（Tom Lane）\u003ca href=\"https://postgr.es/c/8ba6fdf90\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eTZ\u003c/code\u003e 接受时区缩写或数字偏移，而 \u003ccode\u003eOF\u003c/code\u003e 只接受数字偏移。\u003c/p\u003e","id":"17.0-a989828fde2e2ef1","identity_text":"Add to_timestamp() time zone format specifiers (Tom Lane) TZ accepts time zone abbreviations or numeric offsets, while OF accepts only numeric offsets.","part":"changes","patch_ids":["91055d3ffb63717414d185dd38bde979"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["8ba6fdf90"],"source_entry_id":"17.0/changes/086","source_hash":"e743a5205bfa8c7f118647b56e6089f98a0a9e76edc400726ce600298e2cc55e","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"1b688041d44b8fad2d2ae8b2d513b6dbb609cc76f6c5238a13b4e3320799b229","text":"为 to_timestamp() 添加时区格式说明符（Tom Lane）§ TZ 接受时区缩写或数字偏移，而 OF 只接受数字偏移。","title":"为 to_timestamp() 添加时区格式说明符","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["97957fdba"],"commit_groups":[["97957fdba"]],"commits":["97957fdba"],"cves":[],"db_id":"dd05696b9334a5a4f66ae3607a1502db","html":"\u003cp\u003e允许通过 \u003ccode\u003eAT LOCAL\u003c/code\u003e 指定会话\u003ca href=\"/docs/17/runtime-config-client.html#GUC-TIMEZONE\"\u003e时区\u003c/a\u003e（Vik Fearing）\u003ca href=\"https://postgr.es/c/97957fdba\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这在为时间戳值添加或移除时区，而不是显式指定会话时区字面量时很有用。\u003c/p\u003e","id":"17.0-d08795a05f3e6f6b","identity_text":"Allow the session time zone to be specified by AT LOCAL (Vik Fearing) This is useful when converting adding and removing time zones from time stamps values, rather than specifying the literal session time zone.","part":"changes","patch_ids":["56e48bbda9ba4c5f8386bfd60b2f6b1e"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["97957fdba"],"source_entry_id":"17.0/changes/087","source_hash":"381a3df7224cf58bbb21d1adca418e4ef00dff29d87b5bdbb03ad0919c9c029e","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"b3b1850bd0c882795cbf14fc12e51334556d3072863022b12a9fff41690e6465","text":"允许通过 AT LOCAL 指定会话时区（Vik Fearing）§ 这在为时间戳值添加或移除时区，而不是显式指定会话时区字面量时很有用。","title":"允许通过 AT LOCAL 指定会话时区","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["794f10f6b"],"commit_groups":[["794f10f6b"]],"commits":["794f10f6b"],"cves":[],"db_id":"1ca69f05ab160e002d694711d3fcfe01","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-uuid.html\" title=\"9.14. UUID 函数\"\u003e\u003ccode\u003euuid_extract_timestamp()\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003euuid_extract_version()\u003c/code\u003e，用于返回 \u003cacronym\u003eUUID\u003c/acronym\u003e 信息（Andrey Borodin）\u003ca href=\"https://postgr.es/c/794f10f6b\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-1252be3d097bc82d","identity_text":"Add functions uuid_extract_timestamp() and uuid_extract_version() to return UUID information (Andrey Borodin)","part":"changes","patch_ids":["800ea20d57723701a28e3a149aab3fbc"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["794f10f6b"],"source_entry_id":"17.0/changes/088","source_hash":"18a9b883b77bc3d08cfdee373283b004d00fb66024d59b250ae45b665720c390","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"fc3077e1c87f31ed7c24a5e77c2e9587acc9adce7f767fa6cabf6d0a37b843dd","text":"添加函数 uuid_extract_timestamp() 和 uuid_extract_version()，用于返回 UUID 信息（Andrey Borodin）§","title":"添加函数 uuid_extract_timestamp() 和 uuid_extract_version()，用于返回 UUID 信息","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["e6341323a"],"commit_groups":[["e6341323a"]],"commits":["e6341323a"],"cves":[],"db_id":"15f76b84a9cf872bac04242c665d6baf","html":"\u003cp\u003e添加用于在指定范围内生成随机数的函数（Dean Rasheed）\u003ca href=\"https://postgr.es/c/e6341323a\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些函数是 \u003ca href=\"/docs/17/functions-math.html#FUNCTIONS-MATH-RANDOM-TABLE\" title=\"表 9.6. 随机函数\"\u003e\u003ccode\u003erandom(min, max)\u003c/code\u003e\u003c/a\u003e，其参数可为 \u003ccode\u003einteger\u003c/code\u003e、\u003ccode\u003ebigint\u003c/code\u003e 和 \u003ccode\u003enumeric\u003c/code\u003e 类型的值。\u003c/p\u003e","id":"17.0-4f3b9df121a021ed","identity_text":"Add functions to generate random numbers in a specified range (Dean Rasheed) The functions are random(min, max) and they take values of type integer, bigint, and numeric.","part":"changes","patch_ids":["487fe43ea5826fdd1bd827f2dbfa3d8c"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["e6341323a"],"source_entry_id":"17.0/changes/089","source_hash":"8a7e21c27820b56f351bdf30c437288bcf7182efc4557b3a2c44d744c09ec7c8","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"2d790131c07f98882ff147f13c1ed85b4e631a47de66a6bb25cd12e9e13239d9","text":"添加用于在指定范围内生成随机数的函数（Dean Rasheed）§ 这些函数是 random(min, max)，其参数可为 integer、bigint 和 numeric 类型的值。","title":"添加用于在指定范围内生成随机数的函数","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["260a1f18d"],"commit_groups":[["260a1f18d"]],"commits":["260a1f18d"],"cves":[],"db_id":"e7ea8e9b047e9df45b8e052b1fe861b8","html":"\u003cp\u003e添加将整数转换为二进制和八进制字符串的函数（Eric Radman, Nathan Bossart）\u003ca href=\"https://postgr.es/c/260a1f18d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些函数是 \u003ca href=\"/docs/17/functions-string.html#FUNCTIONS-STRING-OTHER\" title=\"表 9.10. 其他字符串函数和操作符\"\u003e\u003ccode\u003eto_bin()\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003eto_oct()\u003c/code\u003e。\u003c/p\u003e","id":"17.0-70100a8ca562fb61","identity_text":"Add functions to convert integers to binary and octal strings (Eric Radman, Nathan Bossart) The functions are to_bin() and to_oct().","part":"changes","patch_ids":["b85ba41fc9ae02aae058e57694a4e20e"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["260a1f18d"],"source_entry_id":"17.0/changes/090","source_hash":"9b9d0f78bc2165c7d009f505c7b680d3abccc24486339914c69037cc042b40d2","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"cb8199f4455dc9385eea98bbbd277b341b818b5fc4509f10e332ebd9c7b0f8f5","text":"添加将整数转换为二进制和八进制字符串的函数（Eric Radman, Nathan Bossart）§ 这些函数是 to_bin() 和 to_oct()。","title":"添加将整数转换为二进制和八进制字符串的函数","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a02b37fc0"],"commit_groups":[["a02b37fc0"]],"commits":["a02b37fc0"],"cves":[],"db_id":"d461ed69798162833d67b79760bc6525","html":"\u003cp\u003e添加 Unicode 信息函数（Jeff Davis）\u003ca href=\"https://postgr.es/c/a02b37fc0\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e函数 \u003ca href=\"/docs/17/functions-info.html#FUNCTIONS-INFO-VERSION\" title=\"9.27.11. 版本信息函数\"\u003e\u003ccode\u003eunicode_version()\u003c/code\u003e\u003c/a\u003e 返回 Unicode 版本，\u003ccode\u003eicu_unicode_version()\u003c/code\u003e 返回 \u003cacronym\u003eICU\u003c/acronym\u003e 版本，而 \u003ccode\u003eunicode_assigned()\u003c/code\u003e 返回字符是否已分配 Unicode 代码点。\u003c/p\u003e","id":"17.0-4c0677f8341cdc5f","identity_text":"Add Unicode informational functions (Jeff Davis) Function unicode_version() returns the Unicode version, icu_unicode_version() returns the ICU version, and unicode_assigned() returns if the characters are assigned Unicode codepoints.","part":"changes","patch_ids":["79931fb543631c90cf16f622153dcdc3"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["a02b37fc0"],"source_entry_id":"17.0/changes/091","source_hash":"cc44735a328c5003cc930a3cd22d093eb987f9f35465efa045b11f64f247c3b1","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"a1d1655351883763ed2a864b4deec2ce5e85fccaea293c517129d5e0c9702f96","text":"添加 Unicode 信息函数（Jeff Davis）§ 函数 unicode_version() 返回 Unicode 版本，icu_unicode_version() 返回 ICU 版本，而 unicode_assigned() 返回字符是否已分配 Unicode 代码点。","title":"添加 Unicode 信息函数","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["526fe0d79"],"commit_groups":[["526fe0d79"]],"commits":["526fe0d79"],"cves":[],"db_id":"1877441fdff0113af5f67821ab127f39","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-xml.html#FUNCTIONS-PRODUCING-XML-XMLTEXT\" title=\"9.15.1.1. xmltext\"\u003e\u003ccode\u003exmltext()\u003c/code\u003e\u003c/a\u003e，用于将文本转换为单个 \u003ccode\u003eXML\u003c/code\u003e 文本节点（Jim Jones）\u003ca href=\"https://postgr.es/c/526fe0d79\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-f1a812077d590a07","identity_text":"Add function xmltext() to convert text to a single XML text node (Jim Jones)","part":"changes","patch_ids":["9c6951624d11cf3d980c925a55d8604b"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["526fe0d79"],"source_entry_id":"17.0/changes/092","source_hash":"a8547f5cf6e52679045cac92e08ad98b7c6ed7bd7e428b1d7933b00151b10475","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"603c2a1c52b94398ad4435b66a1a0c7ea097cc75143f6817eadf051c5692a51d","text":"添加函数 xmltext()，用于将文本转换为单个 XML 文本节点（Jim Jones）§","title":"添加函数 xmltext()，用于将文本转换为单个 XML 文本节点","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["1218ca995"],"commit_groups":[["1218ca995"]],"commits":["1218ca995"],"cves":[],"db_id":"243583233ea3761d5c32bc0a323576bb","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-info.html#FUNCTIONS-INFO-CATALOG-TABLE\" title=\"表 9.74. 系统目录信息函数\"\u003e\u003ccode\u003eto_regtypemod()\u003c/code\u003e\u003c/a\u003e，用于返回类型说明的类型修饰符（David Wheeler, Erik Wienhold）\u003ca href=\"https://postgr.es/c/1218ca995\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-c1bb2831f5dc6038","identity_text":"Add function to_regtypemod() to return the type modifier of a type specification (David Wheeler, Erik Wienhold)","part":"changes","patch_ids":["eee42d82f43164744d81f88a590991e5"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["1218ca995"],"source_entry_id":"17.0/changes/093","source_hash":"31b0aef9ac9e882d085f454104b14628907596f21025d6090bf9be74e6fa58e4","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"88fe82e132fbfb440b0373e765d49d5eff84d502cbf9ed87c8f952702df07468","text":"添加函数 to_regtypemod()，用于返回类型说明的类型修饰符（David Wheeler, Erik Wienhold）§","title":"添加函数 to_regtypemod()，用于返回类型说明的类型修饰符","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["b154d8a6d"],"commit_groups":[["b154d8a6d"]],"commits":["b154d8a6d"],"cves":[],"db_id":"1ac6aae931b6885a5a1689d1feca85be","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-info.html#FUNCTIONS-INFO-CATALOG-TABLE\" title=\"表 9.74. 系统目录信息函数\"\u003e\u003ccode\u003epg_basetype()\u003c/code\u003e\u003c/a\u003e，用于返回域的基础类型（Steve Chavez）\u003ca href=\"https://postgr.es/c/b154d8a6d\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-559f5e1ec1cfec05","identity_text":"Add pg_basetype() function to return a domain's base type (Steve Chavez)","part":"changes","patch_ids":["041c481b6638d7c950ec3b00379b1cda"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["b154d8a6d"],"source_entry_id":"17.0/changes/094","source_hash":"159230e4dc9d755ccc2796fcb674ef0c6b101fcaea5c451a972ef93023aa68fc","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"e0870c59d10b8c2c382a4f599f5b3e18b71c988021e88534d3592f4e89f1db87","text":"添加函数 pg_basetype()，用于返回域的基础类型（Steve Chavez）§","title":"添加函数 pg_basetype()，用于返回域的基础类型","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d1162cfda"],"commit_groups":[["d1162cfda"]],"commits":["d1162cfda"],"cves":[],"db_id":"63d8497e4d9efcd3afe8781f8345c5a2","html":"\u003cp\u003e添加函数 \u003ca href=\"/docs/17/functions-admin.html#FUNCTIONS-ADMIN-DBSIZE\" title=\"表 9.100. 数据库对象尺寸函数\"\u003e\u003ccode\u003epg_column_toast_chunk_id()\u003c/code\u003e\u003c/a\u003e，用于返回某个值的 \u003ca href=\"/docs/17/storage-toast.html\" title=\"65.2. TOAST\"\u003e\u003cacronym\u003eTOAST\u003c/acronym\u003e\u003c/a\u003e 标识符（Yugo Nagata）\u003ca href=\"https://postgr.es/c/d1162cfda\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e如果该值未存储在 \u003cacronym\u003eTOAST\u003c/acronym\u003e 中，则返回 \u003ccode\u003eNULL\u003c/code\u003e。\u003c/p\u003e","id":"17.0-db4f7869884326c5","identity_text":"Add function pg_column_toast_chunk_id() to return a value's TOAST identifier (Yugo Nagata) This returns NULL if the value is not stored in TOAST.","part":"changes","patch_ids":["a55e787266d1dd8899bfb8744ace2c9e"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["d1162cfda"],"source_entry_id":"17.0/changes/095","source_hash":"89b555b5746d659d0b70ee1ae06db67f62b70fa77a20a2a75ef5bcee32bdad4c","source_url":"/docs/release/17.0/#RELEASE-17-FUNCTIONS","statement_hash":"aeb0aaf8e1c69a242a8a4eccd846a7c4ae99ec503f7418091059cd8d67a0228b","text":"添加函数 pg_column_toast_chunk_id()，用于返回某个值的 TOAST 标识符（Yugo Nagata）§ 如果该值未存储在 TOAST 中，则返回 NULL。","title":"添加函数 pg_column_toast_chunk_id()，用于返回某个值的 TOAST 标识符","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["5e8674dc8"],"commit_groups":[["5e8674dc8"]],"commits":["5e8674dc8"],"cves":[],"db_id":"27417eec43c1f8b072777de9836477dd","html":"\u003cp\u003e允许 plpgsql 的 \u003ca href=\"/docs/17/plpgsql-declarations.html#PLPGSQL-DECLARATION-TYPE\" title=\"41.3.3. 复制类型\"\u003e\u003ccode\u003e%TYPE\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003e%ROWTYPE\u003c/code\u003e 说明表示非数组类型的数组（Quan Zongliang, Pavel Stehule）\u003ca href=\"https://postgr.es/c/5e8674dc8\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-82dca12de35b6b18","identity_text":"Allow plpgsql %TYPE and %ROWTYPE specifications to represent arrays of non-array types (Quan Zongliang, Pavel Stehule)","part":"changes","patch_ids":["991a7837ed74853ade1ccbe83142e661"],"related_changes":[],"relations":[],"section":"PL/pgSQL","section_path":["PL/pgSQL"],"source_commits":["5e8674dc8"],"source_entry_id":"17.0/changes/096","source_hash":"d2d82be0430588de611f07e64029399a56514fd2ccf8e80fb469c30f20202b2c","source_url":"/docs/release/17.0/#RELEASE-17-PLPGSQL","statement_hash":"d7f7c1a225fbb8c7456af5a794b6bf2e168476b0fa702e72a124cc016c4f5f5b","text":"允许 plpgsql 的 %TYPE 和 %ROWTYPE 说明表示非数组类型的数组（Quan Zongliang, Pavel Stehule）§","title":"允许 plpgsql 的 %TYPE 和 %ROWTYPE 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server.","part":"changes","patch_ids":["7464bef8a4865a6f9545e62e22109345"],"related_changes":[],"relations":[],"section":"libpq","section_path":["libpq"],"source_commits":["a7be2a6c2"],"source_entry_id":"17.0/changes/098","source_hash":"9fc576c104bc59f8fbf48e1e63483098eb99a4c5d90785bc6b0d201c892484cf","source_url":"/docs/release/17.0/#RELEASE-17-LIBPQ","statement_hash":"5133f17d17db2d9bdf071e8102e6f07998fd2a0144edc54550b05dcdb95a96d2","text":"添加用于更改角色密码的 libpq 函数（Joe Conway）§ 新函数 PQchangePassword() 会在将新密码发送到服务器之前先对其进行 hash 运算。","title":"添加用于更改角色密码的 libpq 函数","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["28b572656"],"commit_groups":[["28b572656"]],"commits":["28b572656"],"cves":[],"db_id":"bc87b74f9a0f17afe1a8ebc55c34a059","html":"\u003cp\u003e添加用于关闭 portal 和预备语句的 libpq 函数（Jelte Fennema-Nio）\u003ca href=\"https://postgr.es/c/28b572656\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些函数是 \u003ca href=\"/docs/17/libpq-exec.html#LIBPQ-PQCLOSEPREPARED\"\u003e\u003ccode\u003ePQclosePrepared()\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/docs/17/libpq-exec.html#LIBPQ-PQCLOSEPORTAL\"\u003e\u003ccode\u003ePQclosePortal()\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/docs/17/libpq-async.html#LIBPQ-PQSENDCLOSEPREPARED\"\u003e\u003ccode\u003ePQsendClosePrepared()\u003c/code\u003e\u003c/a\u003e 以及 \u003ca href=\"/docs/17/libpq-async.html#LIBPQ-PQSENDCLOSEPORTAL\"\u003e\u003ccode\u003ePQsendClosePortal()\u003c/code\u003e\u003c/a\u003e。\u003c/p\u003e","id":"17.0-c80a0f021b695098","identity_text":"Add libpq functions to close portals and prepared statements (Jelte Fennema-Nio) The functions are PQclosePrepared(), PQclosePortal(), PQsendClosePrepared(), and 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title=\"32.7. 取消进行中的查询\"\u003e取消请求\u003c/a\u003e，并在已启用加密时使用加密（Jelte Fennema-Nio）\u003ca href=\"https://postgr.es/c/61461a300\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e先前只支持阻塞且未加密的取消请求。\u003c/p\u003e","id":"17.0-d7d9937299d79c81","identity_text":"Add libpq API which allows for blocking and non-blocking cancel requests, with encryption if already in use (Jelte Fennema-Nio) Previously only blocking, unencrypted cancel requests were supported.","part":"changes","patch_ids":["895b811a613eec2d6f1b1e045c75002d"],"related_changes":[],"relations":[],"section":"libpq","section_path":["libpq"],"source_commits":["61461a300"],"source_entry_id":"17.0/changes/100","source_hash":"d54e119a239b7eb1cae8c3130cd0674ae27b7ef92186f73d91ffc7bf6852ad29","source_url":"/docs/release/17.0/#RELEASE-17-LIBPQ","statement_hash":"dc23fb5befb8e28cecd4ba96534d7c822571aae4d3edc69402ad77c648851df8","text":"添加 libpq API，允许发起阻塞和非阻塞的取消请求，并在已启用加密时使用加密（Jelte Fennema-Nio）§ 先前只支持阻塞且未加密的取消请求。","title":"添加 libpq 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href=\"/docs/17/libpq-pipeline-mode.html#LIBPQ-PQSENDPIPELINESYNC\"\u003e\u003ccode\u003ePQsendPipelineSync()\u003c/code\u003e\u003c/a\u003e，用于发送管道同步点（Anton Kirilov）\u003ca href=\"https://postgr.es/c/4794c2d31\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这与 \u003ca href=\"/docs/17/libpq-pipeline-mode.html#LIBPQ-PQPIPELINESYNC\"\u003e\u003ccode\u003ePQpipelineSync()\u003c/code\u003e\u003c/a\u003e 类似，但除非达到输出缓冲区的大小阈值，否则不会将数据刷新到服务器。\u003c/p\u003e","id":"17.0-6c38a752a789111c","identity_text":"Add libpq function PQsendPipelineSync() to send a pipeline synchronization point (Anton Kirilov) This is similar to PQpipelineSync() but it does not flush to the server unless the size threshold of the output buffer is 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href=\"https://postgr.es/c/03a0e0d4b\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/17a834a04\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/407e0b023\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/fb5718f35\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这通过客户端选项 \u003ca href=\"/docs/17/libpq-connect.html#LIBPQ-CONNECT-SSLNEGOTIATION\"\u003e\u003ccode\u003esslnegotiation=direct\u003c/code\u003e\u003c/a\u003e，启用，需要 \u003cacronym\u003eALPN\u003c/acronym\u003e，并且仅适用于 \u003cspan\u003ePostgreSQL\u003c/span\u003e 17 及更高版本的服务器。\u003c/p\u003e","id":"17.0-f7ebd67eecc76635","identity_text":"Allow TLS connections without requiring a network round-trip negotiation (Greg Stark, Heikki Linnakangas, Peter Eisentraut, Michael Paquier, Daniel Gustafsson) This is enabled with the client-side option sslnegotiation=direct, requires ALPN, and only works on PostgreSQL 17 and later 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模式下通过（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/795592865\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-9a07120b177f57e1","identity_text":"Allow pgcrypto tests to pass in OpenSSL FIPS mode (Peter Eisentraut)","part":"changes","patch_ids":["08761b8e5c59750f736a18305612fd1c"],"related_changes":[],"relations":[],"section":"附加模块","section_path":["附加模块"],"source_commits":["795592865"],"source_entry_id":"17.0/changes/153","source_hash":"bfa7242196ca8f07fddc2d907ac32183f7e1924f168cea723e5030b91bf0cb01","source_url":"/docs/release/17.0/#RELEASE-17-MODULES","statement_hash":"f531e471fa3af9c32a7d13871ca045c429ac9b29a2b80f11eebee0c789094d00","text":"允许 pgcrypto 的测试在 OpenSSL FIPS 模式下通过（Peter Eisentraut）§","title":"允许 pgcrypto 的测试在 OpenSSL FIPS 模式下通过","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["75680c3d8"],"commit_groups":[["75680c3d8"]],"commits":["75680c3d8"],"cves":[],"db_id":"85f03f7e098e7244c189f0de6da4683f","html":"\u003cp\u003e移除一些未使用的 \u003ca href=\"/docs/17/spi.html\" title=\"第 45 章 服务器编程接口\"\u003e\u003cacronym\u003eSPI\u003c/acronym\u003e\u003c/a\u003e 宏（Bharath Rupireddy）\u003ca href=\"https://postgr.es/c/75680c3d8\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-400b3d20a9f78618","identity_text":"Remove some unused SPI macros (Bharath Rupireddy)","part":"changes","patch_ids":["8eb02210c953013409d5689d896ae0e9"],"related_changes":[],"relations":[],"section":"附加模块","section_path":["附加模块"],"source_commits":["75680c3d8"],"source_entry_id":"17.0/changes/154","source_hash":"32667365507ac2e744afee032cf8e3036c1d483ae7d3da7b1b9b9d4c2c0f8083","source_url":"/docs/release/17.0/#RELEASE-17-MODULES","statement_hash":"f3d1a646d47946f1e78824bc03ada29979b7403151fa61c3ea5272d498053d75","text":"移除一些未使用的 SPI 宏（Bharath Rupireddy）§","title":"移除一些未使用的 SPI 宏","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2b5154bea"],"commit_groups":[["2b5154bea"]],"commits":["2b5154bea"],"cves":[],"db_id":"f77fab23da18005f8e03d14d7c6c5b7a","html":"\u003cp\u003e允许 \u003ca href=\"/docs/17/sql-alteroperator.html\" title=\"ALTER OPERATOR\"\u003e\u003ccode\u003eALTER OPERATOR\u003c/code\u003e\u003c/a\u003e 设置更多优化属性（Tommy Pavlicek）\u003ca href=\"https://postgr.es/c/2b5154bea\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这对扩展很有用。\u003c/p\u003e","id":"17.0-17bbfb671e78c3ef","identity_text":"Allow ALTER OPERATOR to set more optimization attributes (Tommy Pavlicek) This is useful for extensions.","part":"changes","patch_ids":["83b25dff27e72215ff6388400399430e"],"related_changes":[],"relations":[],"section":"附加模块","section_path":["附加模块"],"source_commits":["2b5154bea"],"source_entry_id":"17.0/changes/155","source_hash":"147eff46f4e56400f3e7013a5fcd6170a1e254db439cb2e6040367f7767d5105","source_url":"/docs/release/17.0/#RELEASE-17-MODULES","statement_hash":"5369619e8fafe7aab9c1a1d35d794b1c2d2f6e8a6f88922a3229d202113d0c5f","text":"允许 ALTER OPERATOR 设置更多优化属性（Tommy Pavlicek）§ 这对扩展很有用。","title":"允许 ALTER OPERATOR 设置更多优化属性","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["c789f0f6c","c8e318b1b","c9af05465","d61f2538a"],"commit_groups":[["c789f0f6c"],["c8e318b1b"],["c9af05465"],["d61f2538a"]],"commits":["c789f0f6c","c8e318b1b","c9af05465","d61f2538a"],"cves":[],"db_id":"d63e44947b60988f27614175b5661fa5","html":"\u003cp\u003e允许扩展定义\u003ca href=\"/docs/17/xfunc-c.html#XFUNC-ADDIN-WAIT-EVENTS\" title=\"36.10.12. 自定义等待事件\"\u003e自定义等待事件\u003c/a\u003e（Masahiro Ikeda）\u003ca href=\"https://postgr.es/c/c9af05465\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/c8e318b1b\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/d61f2538a\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/c789f0f6c\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e已为 \u003cspan\u003e\u003ca href=\"/docs/17/postgres-fdw.html\" title=\"F.36. postgres_fdw — 访问存储在外部 PostgreSQL 服务器中的数据\"\u003epostgres_fdw\u003c/a\u003e\u003c/span\u003e 和 \u003cspan\u003e\u003ca href=\"/docs/17/dblink.html\" title=\"F.11. dblink — 连接到其他 PostgreSQL 数据库\"\u003edblink\u003c/a\u003e\u003c/span\u003e 添加自定义等待事件。\u003c/p\u003e","id":"17.0-7c44dc6fa66788c5","identity_text":"Allow extensions to define custom wait events (Masahiro Ikeda) Custom wait events have been added to postgres-fdw and dblink .","part":"changes","patch_ids":["551282438ee8bf65b5ce0ff14356c112","685609f4c41ca3f1d73cec33965d58de","c3c2943815691b7f043da5e16bf4734b","e8405f8c4ac1936e911a805cbc0c70d9"],"related_changes":[],"relations":[],"section":"附加模块","section_path":["附加模块"],"source_commits":["c789f0f6c","c8e318b1b","c9af05465","d61f2538a"],"source_entry_id":"17.0/changes/156","source_hash":"3e18bb054099b012337f229bfd16abbbe7cd8ac7aa3e1f71d01fd0b4a9369325","source_url":"/docs/release/17.0/#RELEASE-17-MODULES","statement_hash":"a8ce5486d4288a9668f620699027d38aab125e45c30eef32f07c3765898aaf7e","text":"允许扩展定义自定义等待事件（Masahiro Ikeda）§ § § § 已为 postgres_fdw 和 dblink 添加自定义等待事件。","title":"允许扩展定义自定义等待事件","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["13453eedd"],"commit_groups":[["13453eedd"]],"commits":["13453eedd"],"cves":[],"db_id":"61ff3b352b52e9e18577a69aead34ffe","html":"\u003cp\u003e添加 \u003cspan\u003e\u003ca href=\"/docs/17/pgbuffercache.html\" title=\"F.25. pg_buffercache — 检查 PostgreSQL 缓冲区缓存状态\"\u003epg_buffercache\u003c/a\u003e\u003c/span\u003e 函数 \u003ccode\u003epg_buffercache_evict()\u003c/code\u003e，以允许逐出共享缓冲区（Palak Chaturvedi, Thomas Munro）\u003ca href=\"https://postgr.es/c/13453eedd\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这对测试很有用。\u003c/p\u003e","id":"17.0-00fe19218934a128","identity_text":"Add pgbuffercache function pg_buffercache_evict() to allow shared buffer eviction (Palak Chaturvedi, Thomas Munro) This is useful for testing.","part":"changes","patch_ids":["843c758478199eec5fc56a1397918d2f"],"related_changes":[],"relations":[],"section":"附加模块","section_path":["附加模块"],"source_commits":["13453eedd"],"source_entry_id":"17.0/changes/157","source_hash":"25fb5ba59857633a6ef736bcfdd9e285cb3152201b9b8d65bf8306e2092aad24","source_url":"/docs/release/17.0/#RELEASE-17-MODULES","statement_hash":"5e43907c0ac2702df89595e19c2322444d4bf17b01e71c309f06b9aaf0ae3785","text":"添加 pg_buffercache 函数 pg_buffercache_evict()，以允许逐出共享缓冲区（Palak Chaturvedi, Thomas Munro）§ 这对测试很有用。","title":"添加 pg_buffercache 函数 pg_buffercache_evict()，以允许逐出共享缓冲区","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["11c34b342"],"commit_groups":[["11c34b342"]],"commits":["11c34b342"],"cves":[],"db_id":"829435fcd9a5204bcfac577c982e3469","html":"\u003cp\u003e将 \u003cspan\u003epg_stat_statements\u003c/span\u003e 中 \u003ca href=\"/docs/17/sql-call.html\" title=\"CALL\"\u003e\u003ccode\u003eCALL\u003c/code\u003e\u003c/a\u003e 的参数替换为占位符（Sami Imseih）\u003ca href=\"https://postgr.es/c/11c34b342\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"17.0-429b01a8f50d3937","identity_text":"Replace CALL parameters in pg_stat_statements with placeholders (Sami Imseih)","part":"changes","patch_ids":["87f5e7d8ff2e863ba43e78ee25116ca8"],"related_changes":[],"relations":[],"section":"附加模块 / pg_stat_statements","section_path":["附加模块","pg_stat_statements"],"source_commits":["11c34b342"],"source_entry_id":"17.0/changes/158","source_hash":"90c50c720ef38c7ba0b62ef3aedb2e049a0351d05cee703b97d5942d5f84fb82","source_url":"/docs/release/17.0/#RELEASE-17-PGSTATSTATEMENTS","statement_hash":"cc9275113678c3de5e0d531bb7a7a3e8bd0eb99035fef99019d8ced640b7bbc1","text":"将 pg_stat_statements 中 CALL 的参数替换为占位符（Sami Imseih）§","title":"将 pg_stat_statements 中 CALL 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in pg_stat_statements with placeholders (Greg Sabino Mullane) This greatly reduces the number of entries needed to record SAVEPOINT, RELEASE SAVEPOINT, and ROLLBACK TO SAVEPOINT commands.","part":"changes","patch_ids":["e60205f9422d47db4fe5f9b3f589b3f2"],"related_changes":[],"relations":[],"section":"附加模块 / pg_stat_statements","section_path":["附加模块","pg_stat_statements"],"source_commits":["31de7e60d"],"source_entry_id":"17.0/changes/159","source_hash":"c50057061161192a2379d4bfbff725627b34cd605c895a85c386ec953ee4420f","source_url":"/docs/release/17.0/#RELEASE-17-PGSTATSTATEMENTS","statement_hash":"bd64485b74b9e153addf621c9eba9c447fbc0b45f5bbe26fab1e255398ea8edd","text":"将存储在 pg_stat_statements 中的保存点名称替换为占位符（Greg Sabino Mullane）§ 这会大幅减少记录 SAVEPOINT、RELEASE SAVEPOINT 和 ROLLBACK TO SAVEPOINT 命令所需的条目数量。","title":"将存储在 pg_stat_statements 中的保存点名称替换为占位符","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["638d42a3c"],"commit_groups":[["638d42a3c"]],"commits":["638d42a3c"],"cves":[],"db_id":"b33f56a77ff25930b3040bfc942613b5","html":"\u003cp\u003e将存储在 \u003ccode\u003epg_stat_statements\u003c/code\u003e 中的两阶段提交 \u003cacronym\u003eGID\u003c/acronym\u003e 替换为占位符（Michael Paquier）\u003ca href=\"https://postgr.es/c/638d42a3c\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这会大幅减少记录 \u003ca href=\"/docs/17/sql-prepare-transaction.html\" title=\"PREPARE TRANSACTION\"\u003e\u003ccode\u003ePREPARE TRANSACTION\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/docs/17/sql-commit-prepared.html\" title=\"COMMIT PREPARED\"\u003e\u003ccode\u003eCOMMIT PREPARED\u003c/code\u003e\u003c/a\u003e 和 \u003ca href=\"/docs/17/sql-rollback-prepared.html\" title=\"ROLLBACK PREPARED\"\u003e\u003ccode\u003eROLLBACK PREPARED\u003c/code\u003e\u003c/a\u003e 所需的条目数量。\u003c/p\u003e","id":"17.0-d2115aec8d497c4a","identity_text":"Replace the two-phase commit GIDs stored in pg_stat_statements with placeholders (Michael Paquier) This greatly reduces the number of entries needed to record PREPARE TRANSACTION, COMMIT PREPARED, and ROLLBACK PREPARED.","part":"changes","patch_ids":["57b4c7be3c57b33edc95595f13341b10"],"related_changes":[],"relations":[],"section":"附加模块 / pg_stat_statements","section_path":["附加模块","pg_stat_statements"],"source_commits":["638d42a3c"],"source_entry_id":"17.0/changes/160","source_hash":"6678359f9464015d398365b004a42f49431b6266264ad35b6ed6fc67b612a7e1","source_url":"/docs/release/17.0/#RELEASE-17-PGSTATSTATEMENTS","statement_hash":"9fa3b83bd74b30a68b6780fde124f414b7aee39d0beb27daa6a9bde01041969f","text":"将存储在 pg_stat_statements 中的两阶段提交 GID 替换为占位符（Michael Paquier）§ 这会大幅减少记录 PREPARE TRANSACTION、COMMIT PREPARED 和 ROLLBACK PREPARED 所需的条目数量。","title":"将存储在 pg_stat_statements 中的两阶段提交 GID 替换为占位符","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["bb45156f3"],"commit_groups":[["bb45156f3"]],"commits":["bb45156f3"],"cves":[],"db_id":"5951b4d43885e4df40c6caf1c30a6ea4","html":"\u003cp\u003e在 \u003ccode\u003epg_stat_statements\u003c/code\u003e 中跟踪 \u003ca href=\"/docs/17/sql-deallocate.html\" title=\"DEALLOCATE\"\u003e\u003ccode\u003eDEALLOCATE\u003c/code\u003e\u003c/a\u003e（Dagfinn Ilmari Mannsåker, Michael Paquier）\u003ca href=\"https://postgr.es/c/bb45156f3\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eDEALLOCATE\u003c/code\u003e 名称在 \u003ccode\u003epg_stat_statements\u003c/code\u003e 中存储为占位符。\u003c/p\u003e","id":"17.0-4bb3e59515088f2f","identity_text":"Track DEALLOCATE in pg_stat_statements (Dagfinn Ilmari Mannsåker, Michael Paquier) DEALLOCATE names are stored in pg_stat_statements as placeholders.","part":"changes","patch_ids":["056d4a0cbce0e0223cbd0767af1dda9e"],"related_changes":[],"relations":[],"section":"附加模块 / pg_stat_statements","section_path":["附加模块","pg_stat_statements"],"source_commits":["bb45156f3"],"source_entry_id":"17.0/changes/161","source_hash":"a592f4b812f8966cda97db262c24f01e7c1c6a4e472ff15446e81e012657ee1b","source_url":"/docs/release/17.0/#RELEASE-17-PGSTATSTATEMENTS","statement_hash":"f2259aba30c6564e7836765ac064b24dc77c1d6b0cfd71f91b1c1e8b16971140","text":"在 pg_stat_statements 中跟踪 DEALLOCATE（Dagfinn Ilmari Mannsåker, Michael Paquier）§ DEALLOCATE 名称在 pg_stat_statements 中存储为占位符。","title":"在 pg_stat_statements 中跟踪 DEALLOCATE","variants":[],"version":"17.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["295c36c0c","5147ab1dd"],"commit_groups":[["295c36c0c"],["5147ab1dd"]],"commits":["295c36c0c","5147ab1dd"],"cves":[],"db_id":"a487787ae801d826d7c42eb4f15dd2e9","html":"\u003cp\u003e为 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包含许多可能影响与以前版本兼容性的更改。请注意以下不兼容项：\u003c/p\u003e\n\u003cdiv\u003e\n\u003c/div\u003e","minor":0,"placeholder":false,"source_as_of":"","source_url":"/docs/release/17.0/","status":"stable","status_label":"Supported","support_days":1123,"supported":true,"version":"17.0"}],"mode":"release","release_count":1,"remaining_cves":[],"security_as_of":"2026-09-26","security_regressions":[],"source_as_of":"2026-09-26","stats":[{"count":182,"key":"all","label":"All changes"},{"count":154,"key":"feature","label":"Features"},{"count":2,"key":"bugfix","label":"Bug 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title=\"pg_upgrade\"\u003e\u003cspan\u003e\u003cspan\u003epg_upgrade\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e或逻辑复制。有关迁移到新主要版本的通用信息，请参阅\u003ca href=\"/docs/17/upgrading.html\" title=\"18.6. 升级 PostgreSQL 集簇\"\u003e第 18.6 节\u003c/a\u003e。\u003c/p\u003e\n\u003cp\u003e版本 17 包含许多可能影响与以前版本兼容性的更改。请注意以下不兼容项：\u003c/p\u003e\n\u003cdiv\u003e\n\u003c/div\u003e","minor":0,"placeholder":false,"source_as_of":"","source_url":"/docs/release/17.0/","status":"stable","status_label":"Supported","support_days":1123,"supported":true,"version":"17.0"},"total":182,"warnings":[]}