{"already_in_source_count":0,"candidate_count":178,"cross_major":false,"cve_available":true,"cve_count":0,"cves":[],"duplicate_count":0,"excluded_count":0,"exclusions":[],"from_release":null,"groups":[{"age_days":2209,"build":"13.0","changes_count":163,"compatibility_count":15,"content_hash":"ad59d1093647d58ea07adef110d91058aec55451da57e6198ef21125d5e33d0f","date":"2020-09-24","date_text":"2020-09-24","doc_git":"","doc_loaded_at":"2026-09-26T02:56:40.428744","entries":[{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["ca70bdaef"],"commit_groups":[["ca70bdaef"]],"commits":["ca70bdaef"],"cves":[],"db_id":"002b80591bc6fee2e2ce080680a7ad46","html":"\u003cp\u003e将 \u003ca href=\"/docs/13/functions-matching.html#FUNCTIONS-SIMILARTO-REGEXP\" title=\"9.7.2. SIMILAR TO正则表达式\"\u003e\u003ccode\u003eSIMILAR TO ... ESCAPE NULL\u003c/code\u003e\u003c/a\u003e 改为返回 \u003ccode\u003eNULL\u003c/code\u003e（Tom Lane）\u003ca href=\"https://postgr.es/c/ca70bdaef\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这一新行为符合 \u003cacronym\u003eSQL\u003c/acronym\u003e 规范。以前，\u003ccode\u003eESCAPE\u003c/code\u003e 为空值时，被解释为使用默认转义字符串（反斜杠字符）。这也适用于 \u003ccode\u003esubstring(\u003cem\u003e\u003ccode\u003etext\u003c/code\u003e\u003c/em\u003e FROM \u003cem\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e ESCAPE \u003cem\u003e\u003ccode\u003etext\u003c/code\u003e\u003c/em\u003e)\u003c/code\u003e。通过保持原函数不变，在旧视图中保留了以前的行为。\u003c/p\u003e","id":"13.0-33b58367d6134838","identity_text":"Change SIMILAR TO ... ESCAPE NULL to return NULL (Tom Lane) This new behavior matches the SQL specification. Previously a null ESCAPE value was taken to mean using the default escape string (a backslash character). This also applies to substring(text FROM pattern ESCAPE text). The previous behavior has been retained in old views by keeping the original function unchanged.","part":"migration","patch_ids":["eeb400fcc67921acf6635ffdabaa5f5e"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["ca70bdaef"],"source_entry_id":"13.0/migration/001","source_hash":"3239b92d8dfa2b955503fed1b9647544aaf3f4d9bf9cc3c03c39d38985271d81","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"44ce1777acf91f4c78ee797940714f9eca4eccd515b461fe601c69c438680ce1","text":"将 SIMILAR TO ... ESCAPE NULL 改为返回 NULL（Tom Lane）§ 这一新行为符合 SQL 规范。以前，ESCAPE 为空值时，被解释为使用默认转义字符串（反斜杠字符）。这也适用于 substring(text FROM pattern ESCAPE text)。通过保持原函数不变，在旧视图中保留了以前的行为。","title":"将 SIMILAR TO ... ESCAPE NULL 改为返回 NULL","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["870ad6a59"],"commit_groups":[["870ad6a59"]],"commits":["870ad6a59"],"cves":[],"db_id":"e2cf4b32f04aff6b7c45a6ae1c7e99ce","html":"\u003cp\u003e使 \u003ca href=\"/docs/13/functions-textsearch.html#TEXTSEARCH-FUNCTIONS-TABLE\" title=\"表 9.42. 文本检索函数\"\u003e\u003ccode\u003ejson[b]_to_tsvector()\u003c/code\u003e\u003c/a\u003e 完整检查其 \u003ccode\u003estring\u003c/code\u003e 选项的拼写（Dominik Czarnota）\u003ca href=\"https://postgr.es/c/870ad6a59\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-cff16c52bc843914","identity_text":"Make json[b]_to_tsvector() fully check the spelling of its string option (Dominik Czarnota)","part":"migration","patch_ids":["616c06ded99aeeb20cbb2862ee8abe37"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["870ad6a59"],"source_entry_id":"13.0/migration/002","source_hash":"3579faf3bac4ad82fadaa4a0d1357b7b6044b0b0788992215f1bb1ba52e40790","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"c9c9edb5e2391b4403d18b698234c6d9f4cf3a615017875b508fec85deda544b","text":"使 json[b]_to_tsvector() 完整检查其 string 选项的拼写（Dominik Czarnota）§","title":"使 json[b]_to_tsvector() 完整检查其 string 选项的拼写","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["b09ff5366"],"commit_groups":[["b09ff5366"]],"commits":["b09ff5366"],"cves":[],"db_id":"62eeb3605c46c2db1d264b35b8f0eb40","html":"\u003cp\u003e改变非默认的\u003ca href=\"/docs/13/runtime-config-resource.html#GUC-EFFECTIVE-IO-CONCURRENCY\"\u003eeffective_io_concurrency\u003c/a\u003e值影响并发度的方式（Thomas Munro）\u003ca href=\"https://postgr.es/c/b09ff5366\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，该值在用于设置并发请求数之前会经过调整。现在直接使用该值。可以通过以下方式将旧值转换为新值：\u003c/p\u003e\n\u003cpre\u003eSELECT round(sum(\u003cem\u003e\u003ccode\u003eOLDVALUE\u003c/code\u003e\u003c/em\u003e / n::float)) AS newvalue FROM generate_series(1, \u003cem\u003e\u003ccode\u003eOLDVALUE\u003c/code\u003e\u003c/em\u003e) s(n);\n\u003c/pre\u003e","id":"13.0-5efddc7fe669340c","identity_text":"Change the way non-default guc-effective-io-concurrency values affect concurrency (Thomas Munro) Previously, this value was adjusted before setting the number of concurrent requests. The value is now used directly. Conversion of old values to new ones can be done using: SELECT round(sum(OLDVALUE / n::float)) AS newvalue FROM generate_series(1, OLDVALUE) s(n);","part":"migration","patch_ids":["09811ae59f6e55e41d6231afcb24cf3b"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["b09ff5366"],"source_entry_id":"13.0/migration/003","source_hash":"887d98f1c5f3458eeca123ae4b8ef91d64967e790cff24b3841e20144be679d8","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"86f867b4d46c0f6eb3c9078cc12c90da564979ed93bf6b5d74c99015dd62daf6","text":"改变非默认的effective_io_concurrency值影响并发度的方式（Thomas Munro）§ 以前，该值在用于设置并发请求数之前会经过调整。现在直接使用该值。可以通过以下方式将旧值转换为新值： SELECT round(sum(OLDVALUE / n::float)) AS newvalue FROM generate_series(1, OLDVALUE) s(n);","title":"改变非默认的effective_io_concurrency值影响并发度的方式","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["5c46e7d82"],"commit_groups":[["5c46e7d82"]],"commits":["5c46e7d82"],"cves":[],"db_id":"9313d0f386baf2e63f4d460b3f905624","html":"\u003cp\u003e不再在\u003ca href=\"/docs/13/monitoring-stats.html#PG-STAT-SSL-VIEW\" title=\"表 27.17. pg_stat_ssl 视图\"\u003epg_stat_ssl\u003c/a\u003e和\u003ca href=\"/docs/13/monitoring-stats.html#PG-STAT-GSSAPI-VIEW\" title=\"表 27.18. pg_stat_gssapi 视图\"\u003epg_stat_gssapi\u003c/a\u003e系统视图中显示辅助进程（Euler Taveira）\u003ca href=\"https://postgr.es/c/5c46e7d82\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e如果查询将这些视图与\u003ca href=\"/docs/13/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW\" title=\"表 27.3. pg_stat_activity 视图\"\u003epg_stat_activity\u003c/a\u003e连接，并希望看到辅助进程，就需要使用左连接。\u003c/p\u003e","id":"13.0-d3d1409eb3c66993","identity_text":"Prevent display of auxiliary processes in pg-stat-ssl-view and pg-stat-gssapi-view system views (Euler Taveira) Queries that join these views to pg-stat-activity-view and wish to see auxiliary processes will need to use left joins.","part":"migration","patch_ids":["96747b44433d92350891ffedfc74bea6"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["5c46e7d82"],"source_entry_id":"13.0/migration/004","source_hash":"f143a020e659d77b071b21ca82777b03a4905c81240c8b6733a7b3067f59a8ed","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"c8cd602d26bb43a8b55cdedc086a5b8f103cbcfcc8b07d3afe9ad23f0f0d5648","text":"不再在pg_stat_ssl和pg_stat_gssapi系统视图中显示辅助进程（Euler Taveira）§ 如果查询将这些视图与pg_stat_activity连接，并希望看到辅助进程，就需要使用左连接。","title":"不再在pg_stat_ssl和pg_stat_gssapi系统视图中显示辅助进程","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["14a910109","1d253bae5","3048898e7","36ac359d3","474e7da64"],"commit_groups":[["14a910109"],["1d253bae5"],["3048898e7"],["36ac359d3"],["474e7da64"]],"commits":["14a910109","1d253bae5","3048898e7","36ac359d3","474e7da64"],"cves":[],"db_id":"f1444cb151ee5ea496b7e4b3275b2b25","html":"\u003cp\u003e重命名多种\u003ca href=\"/docs/13/monitoring-stats.html#WAIT-EVENT-TABLE\" title=\"表 27.4. 等待事件类型\"\u003e等待事件\u003c/a\u003e以提高一致性（Fujii Masao，Tom Lane）\u003ca href=\"https://postgr.es/c/1d253bae5\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/36ac359d3\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/474e7da64\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/14a910109\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/3048898e7\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-300271e52a32d70f","identity_text":"Rename various wait events to improve consistency (Fujii Masao, Tom Lane)","part":"migration","patch_ids":["195ace185d7f5b3a4da50890b98068c0","243bd4fa4d8a5f651aab0f2ea7eb5404","4217cca386c79401079c66baa5b24ded","46cc2e60fc20da950850633e14c8925c","c638cb4d385eefbf24b61f62574666cd"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["14a910109","1d253bae5","3048898e7","36ac359d3","474e7da64"],"source_entry_id":"13.0/migration/005","source_hash":"71f0d0c1714b7dbcd63c7a1cf2b14a54dc09ff4fd9606d66064c5f930bcc8d5d","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"34b21a81588e567c1ea58fc48e626cb5838521aea92107512b2f2c9d37de94ef","text":"重命名多种等待事件以提高一致性（Fujii Masao，Tom Lane）§ § § § §","title":"重命名多种等待事件以提高一致性","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["979766c0a"],"commit_groups":[["979766c0a"]],"commits":["979766c0a"],"cves":[],"db_id":"51e4db761d371a4c2f201d0fc7486749","html":"\u003cp\u003e修复 \u003ca href=\"/docs/13/sql-alterforeigntable.html\" title=\"ALTER FOREIGN TABLE\"\u003e\u003ccode\u003eALTER FOREIGN TABLE ... RENAME COLUMN\u003c/code\u003e\u003c/a\u003e，使其返回更合适的命令标签（Fujii Masao）\u003ca href=\"https://postgr.es/c/979766c0a\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前返回 \u003ccode\u003eALTER TABLE\u003c/code\u003e；现在返回 \u003ccode\u003eALTER FOREIGN TABLE\u003c/code\u003e。\u003c/p\u003e","id":"13.0-315c02f83f3e1e65-1","identity_text":"Fix ALTER FOREIGN TABLE ... RENAME COLUMN to return a more appropriate command tag (Fujii Masao) Previously it returned ALTER TABLE; now it returns ALTER FOREIGN TABLE.","part":"migration","patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"related_changes":[{"db_id":"cbfeffa69ae1858c0ab9cb978bcb4d69","evidence":{"ambiguous_patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"same_day":true},"kind":"related","label":"13.0","source_url":"/docs/release/13.0/#id-1.11.6.29.4","title":"修复 ALTER MATERIALIZED VIEW ... RENAME COLUMN，使其返回更合适的命令标签","url":"/docs/compare/?release=13.0#13.0-315c02f83f3e1e65-2","version":"13.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"same_day":true},"rule":2,"target":"cbfeffa69ae1858c0ab9cb978bcb4d69","type":"related"}],"section":"兼容性","section_path":["兼容性"],"source_commits":["979766c0a"],"source_entry_id":"13.0/migration/006","source_hash":"5bdff730d497c3ae85e39ee89a7b7abc3156b283e8df56bca59a9568cf0da75b","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"0768a9870e858df0edac2ef034cd7a05b7035a71d4f77bed4b06817e2efd7286","text":"修复 ALTER FOREIGN TABLE ... RENAME COLUMN，使其返回更合适的命令标签（Fujii Masao）§ 以前返回 ALTER TABLE；现在返回 ALTER FOREIGN TABLE。","title":"修复 ALTER FOREIGN TABLE ... RENAME COLUMN，使其返回更合适的命令标签","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["979766c0a"],"commit_groups":[["979766c0a"]],"commits":["979766c0a"],"cves":[],"db_id":"cbfeffa69ae1858c0ab9cb978bcb4d69","html":"\u003cp\u003e修复 \u003ca href=\"/docs/13/sql-altermaterializedview.html\" title=\"ALTER MATERIALIZED VIEW\"\u003e\u003ccode\u003eALTER MATERIALIZED VIEW ... RENAME COLUMN\u003c/code\u003e\u003c/a\u003e，使其返回更合适的命令标签（Fujii Masao）\u003ca href=\"https://postgr.es/c/979766c0a\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前返回 \u003ccode\u003eALTER TABLE\u003c/code\u003e；现在返回 \u003ccode\u003eALTER MATERIALIZED VIEW\u003c/code\u003e。\u003c/p\u003e","id":"13.0-315c02f83f3e1e65-2","identity_text":"Fix ALTER MATERIALIZED VIEW ... RENAME COLUMN to return a more appropriate command tag (Fujii Masao) Previously it returned ALTER TABLE; now it returns ALTER MATERIALIZED VIEW.","part":"migration","patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"related_changes":[{"db_id":"51e4db761d371a4c2f201d0fc7486749","evidence":{"ambiguous_patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"same_day":true},"kind":"related","label":"13.0","source_url":"/docs/release/13.0/#id-1.11.6.29.4","title":"修复 ALTER FOREIGN TABLE ... RENAME COLUMN，使其返回更合适的命令标签","url":"/docs/compare/?release=13.0#13.0-315c02f83f3e1e65-1","version":"13.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"patch_ids":["8f4a02aa3d3a1d5200b89b1e95bc7cce"],"same_day":true},"rule":2,"target":"51e4db761d371a4c2f201d0fc7486749","type":"related"}],"section":"兼容性","section_path":["兼容性"],"source_commits":["979766c0a"],"source_entry_id":"13.0/migration/007","source_hash":"52bec337a7f0afd45589a781987131e7852b81e00da5df8494e52a4b03e4d31f","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"88ff6676d694c92a6cf84342a67f2b565f4d6ac51be5312b8b474314f5fa0d7c","text":"修复 ALTER MATERIALIZED VIEW ... RENAME COLUMN，使其返回更合适的命令标签（Fujii Masao）§ 以前返回 ALTER TABLE；现在返回 ALTER MATERIALIZED VIEW。","title":"修复 ALTER MATERIALIZED VIEW ... RENAME COLUMN，使其返回更合适的命令标签","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["f5dff45962"],"commit_groups":[["f5dff45962"]],"commits":["f5dff45962"],"cves":[],"db_id":"87d08c201e2ac67f6d62188bb16926b9","html":"\u003cp\u003e将配置参数 \u003ccode\u003ewal_keep_segments\u003c/code\u003e 重命名为\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-WAL-KEEP-SIZE\"\u003ewal_keep_size\u003c/a\u003e（Fujii Masao）\u003ca href=\"https://postgr.es/c/f5dff45962\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这决定为备库保留多少 WAL。它以 MB 为单位指定，而旧参数以文件数量指定。如果以前使用 \u003ccode\u003ewal_keep_segments\u003c/code\u003e，以下公式可以得到大致等价的设置：\u003c/p\u003e\n\u003cpre\u003ewal_keep_size = wal_keep_segments * wal_segment_size (typically 16MB)\n\u003c/pre\u003e","id":"13.0-611ec07ad6a9e83c","identity_text":"Rename configuration parameter wal_keep_segments to guc-wal-keep-size (Fujii Masao) This determines how much WAL to retain for standby servers. It is specified in megabytes, rather than number of files as with the old parameter. If you previously used wal_keep_segments, the following formula will give you an approximately equivalent setting: wal_keep_size = wal_keep_segments * wal_segment_size (typically 16MB)","part":"migration","patch_ids":["fea7ca80079c4413db2f8830f6353864"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["f5dff45962"],"source_entry_id":"13.0/migration/008","source_hash":"5247db2ac5fe00062643e042cf5fa48abbadabf2d713b848e51877e0a199da8e","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"83a238007d82d98ff7e12463b63c4b4c41cfe26f20e00841e3f2a08a5010dab1","text":"将配置参数 wal_keep_segments 重命名为wal_keep_size（Fujii Masao）§ 这决定为备库保留多少 WAL。它以 MB 为单位指定，而旧参数以文件数量指定。如果以前使用 wal_keep_segments，以下公式可以得到大致等价的设置： wal_keep_size = wal_keep_segments * wal_segment_size (typically 16MB)","title":"将配置参数 wal_keep_segments 重命名为wal_keep_size","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["84eca14bc"],"commit_groups":[["84eca14bc"]],"commits":["84eca14bc"],"cves":[],"db_id":"00cdd4565943a99c71ac24dd72c69a5d","html":"\u003cp\u003e移除使用 \u003cspan\u003ePostgreSQL\u003c/span\u003e 8.0 之前的语法定义\u003ca href=\"/docs/13/sql-createopclass.html\" title=\"CREATE OPERATOR CLASS\"\u003e操作符类\u003c/a\u003e的支持（Daniel Gustafsson）\u003ca href=\"https://postgr.es/c/84eca14bc\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-0deec1e0e7129d4b","identity_text":"Remove support for defining operator classes using pre-PostgreSQL 8.0 syntax (Daniel Gustafsson)","part":"migration","patch_ids":["462d626bf85e27e1ecf4e17d1b973712"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["84eca14bc"],"source_entry_id":"13.0/migration/009","source_hash":"74187af3391ddc0fa17fd55f5a5429942075681f777a0a8aa884e76e0ac5255e","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"4d1c6b3a631af6a14564f453c23960f5730654034dcc77957fbe83be5df44ffb","text":"移除使用 PostgreSQL 8.0 之前的语法定义操作符类的支持（Daniel Gustafsson）§","title":"移除使用 PostgreSQL 8.0 之前的语法定义操作符类的支持","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["e58a59975"],"commit_groups":[["e58a59975"]],"commits":["e58a59975"],"cves":[],"db_id":"a4731981520d809b1764f36804869b0f","html":"\u003cp\u003e移除使用 \u003cspan\u003ePostgreSQL\u003c/span\u003e 7.3 之前的语法定义\u003ca href=\"/docs/13/sql-altertable.html\" title=\"ALTER TABLE\"\u003e外键约束\u003c/a\u003e的支持（Daniel Gustafsson）\u003ca href=\"https://postgr.es/c/e58a59975\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-181ce8a6cc7d16d5","identity_text":"Remove support for defining foreign key constraints using pre-PostgreSQL 7.3 syntax (Daniel Gustafsson)","part":"migration","patch_ids":["b01af42c52dd802bb31bd86bdef135c6"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["e58a59975"],"source_entry_id":"13.0/migration/010","source_hash":"62c50582b07ca26907178805fd3733688c10bafc434eaeb087814b47ff5198bd","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"d1988126fb6693abe4be81ca0189d490c9b271a8b56ba72b11a717bc61458ea2","text":"移除使用 PostgreSQL 7.3 之前的语法定义外键约束的支持（Daniel Gustafsson）§","title":"移除使用 PostgreSQL 7.3 之前的语法定义外键约束的支持","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["bb03010b9"],"commit_groups":[["bb03010b9"]],"commits":["bb03010b9"],"cves":[],"db_id":"a17abaa2942f10365a93775b57760c98","html":"\u003cp\u003e移除对 \u003cspan\u003ePostgreSQL\u003c/span\u003e 7.3 之前的服务器所使用的 \"opaque\" \u003ca href=\"/docs/13/sql-createtype.html\" title=\"CREATE TYPE\"\u003e伪类型\u003c/a\u003e的支持（Daniel Gustafsson）\u003ca href=\"https://postgr.es/c/bb03010b9\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-a4c99539e3f91994","identity_text":"Remove support for \"opaque\" pseudo-types used by pre-PostgreSQL 7.3 servers (Daniel Gustafsson)","part":"migration","patch_ids":["841feb81d4817adce792d43370b2b3a1"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["bb03010b9"],"source_entry_id":"13.0/migration/011","source_hash":"62be98f085cfb7121765762115068cf66f6e71ff82615faf7b3aabfbf4026cd8","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"6d8b1f94d19be6214cb12adaf11ef0b636519d57ceb8e6d43819cb6d5457a05b","text":"移除对 PostgreSQL 7.3 之前的服务器所使用的 \"opaque\" 伪类型的支持（Daniel Gustafsson）§","title":"移除对 PostgreSQL 7.3 之前的服务器所使用的 \"opaque\" 伪类型的支持","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["70a773200"],"commit_groups":[["70a773200"]],"commits":["70a773200"],"cves":[],"db_id":"358f1a2edb8d44d028ddbb5a723810cd","html":"\u003cp\u003e移除对升级未打包扩展（9.1 之前的扩展）的支持（Tom Lane）\u003ca href=\"https://postgr.es/c/70a773200\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"/docs/13/sql-createextension.html\" title=\"CREATE EXTENSION\"\u003e\u003ccode\u003eCREATE EXTENSION\u003c/code\u003e\u003c/a\u003e 不再支持 \u003ccode\u003eFROM\u003c/code\u003e 选项。任何仍使用未打包扩展的安装实例，都应在更新到 \u003cspan\u003ePostgreSQL\u003c/span\u003e 13 之前，将这些扩展升级为已打包的版本。\u003c/p\u003e","id":"13.0-e0e2f90b4addfeae","identity_text":"Remove support for upgrading unpackaged (pre-9.1) extensions (Tom Lane) The FROM option of CREATE EXTENSION is no longer supported. Any installations still using unpackaged extensions should upgrade them to a packaged version before updating to PostgreSQL 13.","part":"migration","patch_ids":["b55d5d8f2beb4548aa95c9d237e10be3"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["70a773200"],"source_entry_id":"13.0/migration/012","source_hash":"6a8c53b62999753cb82cabf7dd9d03ebf3d23513e393ac50577d3507e7ffb9a7","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"f1cd8cea4ecd03f359eb207b8a8d3f1fca26f5dfba1b008abd1645847a92d139","text":"移除对升级未打包扩展（9.1 之前的扩展）的支持（Tom Lane）§ CREATE EXTENSION 不再支持 FROM 选项。任何仍使用未打包扩展的安装实例，都应在更新到 PostgreSQL 13 之前，将这些扩展升级为已打包的版本。","title":"移除对升级未打包扩展（9.1 之前的扩展）的支持","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["21aac2ff9"],"commit_groups":[["21aac2ff9"]],"commits":["21aac2ff9"],"cves":[],"db_id":"c6a108a84b372a96c616b764a8c2e29f","html":"\u003cp\u003e移除对时区数据库中 \u003ccode\u003eposixrules\u003c/code\u003e 文件的支持（Tom Lane）\u003ca href=\"https://postgr.es/c/21aac2ff9\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eIANA 的时区工作组已弃用此特性，这意味着它将在未来几年中逐渐从系统的时区数据库中消失。为避免时区数据更新意外引发行为变化，我们从版本 13 开始移除了 \u003cspan\u003ePostgreSQL\u003c/span\u003e 对此特性的支持。这只影响缺少显式夏令时切换规则的 \u003ca href=\"/docs/13/datetime-posix-timezone-specs.html\" title=\"B.5. POSIX 时区规范\"\u003ePOSIX 风格时区指定\u003c/a\u003e的行为；以前可以通过安装自定义 \u003ccode\u003eposixrules\u003c/code\u003e 文件来确定切换规则，现在则使用硬编码规则。对于受影响的安装实例，建议改用地理时区名称。\u003c/p\u003e","id":"13.0-c5adedfa4dad8bb1","identity_text":"Remove support for posixrules files in the timezone database (Tom Lane) IANA's timezone group has deprecated this feature, meaning that it will gradually disappear from systems' timezone databases over the next few years. Rather than have a behavioral change appear unexpectedly with a timezone data update, we have removed PostgreSQL's support for this feature as of version 13. This affects only the behavior of POSIX-style time zone specifications that lack an explicit daylight savings transition rule; formerly the transition rule could be determined by installing a custom posixrules file, but now it is hard-wired. The recommended fix for any affected installations is to start using a geographical time zone name.","part":"migration","patch_ids":["4c3cb7db97952e6ee49b12bec6ee41ff"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["21aac2ff9"],"source_entry_id":"13.0/migration/013","source_hash":"51daf2ed426c4469ed563daea3d2df20e679e49787cd6352fd64256cde12464e","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"8c1eb545f9ac635f1a57b569d3e2687ede939d7c6553ad81d8574d9024741f5d","text":"移除对时区数据库中 posixrules 文件的支持（Tom Lane）§ IANA 的时区工作组已弃用此特性，这意味着它将在未来几年中逐渐从系统的时区数据库中消失。为避免时区数据更新意外引发行为变化，我们从版本 13 开始移除了 PostgreSQL 对此特性的支持。这只影响缺少显式夏令时切换规则的 POSIX 风格时区指定的行为；以前可以通过安装自定义 posixrules 文件来确定切换规则，现在则使用硬编码规则。对于受影响的安装实例，建议改用地理时区名称。","title":"移除对时区数据库中 posixrules 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Glukhov)","part":"migration","patch_ids":["7f9857baee0ae728daa2cd24a7a21101"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["9950c8aad"],"source_entry_id":"13.0/migration/014","source_hash":"027524cc8373e1c28f7e5f68279308e636b317d16331e88c13cb18d73e1a7d5c","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"5b2d8c3d0f366318ce723a0975f877c1777432850dc2a4cff2606704af9a6e91","text":"在ltree中，当 lquery 模式包含相邻的带花括号星号时，例如 *{2}.*{3}，将其正确解释为 *{5}（Nikita Glukhov）§","title":"在ltree中，当 lquery 模式包含相邻的带花括号星号时，例如 *{2}.*{3}，将其正确解释为 *{5}","variants":[],"version":"13.0"},{"also_in":[],"category":"compatibility","category_label":"Compatibility","commit_aliases":["691e8b2e1"],"commit_groups":[["691e8b2e1"]],"commits":["691e8b2e1"],"cves":[],"db_id":"30272e62115718c16aea57bf80affb17","html":"\u003cp\u003e修复\u003ca href=\"/docs/13/pageinspect.html\" title=\"F.22. pageinspect\"\u003epageinspect\u003c/a\u003e的 \u003ccode\u003ebt_metap()\u003c/code\u003e，使其返回更合适、不易溢出的数据类型（Peter Geoghegan）\u003ca href=\"https://postgr.es/c/691e8b2e1\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-ff7a2c984c3d3a04","identity_text":"Fix pageinspect 's bt_metap() to return more appropriate data types that are less likely to overflow (Peter Geoghegan)","part":"migration","patch_ids":["cd78a2c4c01e9fc325e81bc87c0418a3"],"related_changes":[],"relations":[],"section":"兼容性","section_path":["兼容性"],"source_commits":["691e8b2e1"],"source_entry_id":"13.0/migration/015","source_hash":"f7fe09cc788d91411776d1e4528a830323aa9d18c8bc0569e0ccc5d1cde6e7c4","source_url":"/docs/release/13.0/#id-1.11.6.29.4","statement_hash":"7f36c9d80e20274fcd83d94aae76c3e4b5db2a9d2dfca6246842bc92dbc17498","text":"修复pageinspect的 bt_metap()，使其返回更合适、不易溢出的数据类型（Peter Geoghegan）§","title":"修复pageinspect的 bt_metap()，使其返回更合适、不易溢出的数据类型","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["4e85642d9","815ef2f56"],"commit_groups":[["4e85642d9"],["815ef2f56"]],"commits":["4e85642d9","815ef2f56"],"cves":[],"db_id":"1163eca048c7512a1194c404ff4a5d31","html":"\u003cp\u003e允许在更多情况下进行分区\u003ca href=\"/docs/13/ddl-partitioning.html#DDL-PARTITION-PRUNING\" title=\"5.11.4. 分区剪枝\"\u003e剪枝\u003c/a\u003e（Yuzuko Hosoya，Amit Langote，Álvaro Herrera）\u003ca href=\"https://postgr.es/c/4e85642d9\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/815ef2f56\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-ad91b07ce0e06a59","identity_text":"Allow pruning of partitions to happen in more cases (Yuzuko Hosoya, Amit Langote, Álvaro Herrera)","part":"changes","patch_ids":["8d707c3ed0d6ed27bbc2208ab0715fe4","be2d57e2e5b19a51edc2d004e9edbae8"],"related_changes":[],"relations":[],"section":"服务器 / 分区","section_path":["服务器","分区"],"source_commits":["4e85642d9","815ef2f56"],"source_entry_id":"13.0/changes/001","source_hash":"64c3c2751270ec5e94aa97d9bdd63bf4965d68adef735cf6f469eecb0a903365","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.2","statement_hash":"80cae61bcf28137813bdf2ee17baac735061de0f672b9bc52d324b7dfd2e7bdd","text":"允许在更多情况下进行分区剪枝（Yuzuko Hosoya，Amit Langote，Álvaro Herrera）§ §","title":"允许在更多情况下进行分区剪枝","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["981643dcd","c8434d64c"],"commit_groups":[["981643dcd"],["c8434d64c"]],"commits":["981643dcd","c8434d64c"],"cves":[],"db_id":"013e9e4c0c64877c23c756c68b800b84","html":"\u003cp\u003e允许在更多情况下进行\u003ca href=\"/docs/13/runtime-config-query.html#GUC-ENABLE-PARTITIONWISE-JOIN\"\u003e逐分区连接\u003c/a\u003e（Ashutosh Bapat，Etsuro Fujita，Amit Langote，Tom Lane）\u003ca href=\"https://postgr.es/c/c8434d64c\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/981643dcd\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e例如，即使分区边界并不完全匹配，现在也可以在分区表之间进行逐分区连接。\u003c/p\u003e","id":"13.0-a718c78c5f565762","identity_text":"Allow partitionwise joins to happen in more cases (Ashutosh Bapat, Etsuro Fujita, Amit Langote, Tom Lane) For example, partitionwise joins can now happen between partitioned tables even when their partition bounds do not match exactly.","part":"changes","patch_ids":["5510e3129a6cd5fd7303183bb169773b","cea05edc62e6634bae9280680618d3e9"],"related_changes":[],"relations":[],"section":"服务器 / 分区","section_path":["服务器","分区"],"source_commits":["981643dcd","c8434d64c"],"source_entry_id":"13.0/changes/002","source_hash":"51285655786ce74d28ff0a20fd74ffd1cf0653a8b0dcc273c218ca53b5b410e4","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.2","statement_hash":"97d3c09ac8016dd55ea466ff69ec48804edf66491d17f9a611dda4ab420aca60","text":"允许在更多情况下进行逐分区连接（Ashutosh Bapat，Etsuro Fujita，Amit Langote，Tom Lane）§ § 例如，即使分区边界并不完全匹配，现在也可以在分区表之间进行逐分区连接。","title":"允许在更多情况下进行逐分区连接","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["487e9861d"],"commit_groups":[["487e9861d"]],"commits":["487e9861d"],"cves":[],"db_id":"abb3546ba651a44c0b85673ae967e58b","html":"\u003cp\u003e支持分区表上的行级 \u003ccode\u003eBEFORE\u003c/code\u003e \u003ca href=\"/docs/13/triggers.html\" title=\"第 38 章 触发器\"\u003e触发器\u003c/a\u003e（Álvaro Herrera）\u003ca href=\"https://postgr.es/c/487e9861d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e但是，不允许此类触发器改变目标分区。\u003c/p\u003e","id":"13.0-672ee0b9193bfb24","identity_text":"Support row-level BEFORE triggers on partitioned tables (Álvaro Herrera) However, such a trigger is not allowed to change which partition is the destination.","part":"changes","patch_ids":["13594f035854cbbbd68f0945daceb87f"],"related_changes":[],"relations":[],"section":"服务器 / 分区","section_path":["服务器","分区"],"source_commits":["487e9861d"],"source_entry_id":"13.0/changes/003","source_hash":"7375c39dfdea7a22eda5060d1e383b507617eda7f4c53dbaa92837c2c26ec4b2","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.2","statement_hash":"b8576476e5ca0bb20544cc08df083f8993b8a732cbfaff7c89be1f618cfe841a","text":"支持分区表上的行级 BEFORE 触发器（Álvaro Herrera）§ 但是，不允许此类触发器改变目标分区。","title":"支持分区表上的行级 BEFORE 触发器","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["17b9e7f9f","83fd4532a"],"commit_groups":[["17b9e7f9f"],["83fd4532a"]],"commits":["17b9e7f9f","83fd4532a"],"cves":[],"db_id":"e776d3a6e65553e82bc735c1931a3dac","html":"\u003cp\u003e允许通过\u003ca href=\"/docs/13/sql-createpublication.html\" title=\"CREATE PUBLICATION\"\u003e发布\u003c/a\u003e对分区表进行逻辑复制（Amit Langote）\u003ca href=\"https://postgr.es/c/17b9e7f9f\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/83fd4532a\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，必须逐个复制分区。现在可以显式发布分区表，从而自动发布其所有分区。添加或移除分区时，也会将其相应地添加到发布或从发布中移除。\u003ca href=\"/docs/13/sql-createpublication.html\" title=\"CREATE PUBLICATION\"\u003e\u003ccode\u003eCREATE PUBLICATION\u003c/code\u003e\u003c/a\u003e 的 \u003ccode\u003epublish_via_partition_root\u003c/code\u003e 选项控制分区变更是作为分区自身的变更发布，还是作为父表的变更发布。\u003c/p\u003e","id":"13.0-765158cb68dd9e47","identity_text":"Allow partitioned tables to be logically replicated via publications (Amit Langote) Previously, partitions had to be replicated individually. Now a partitioned table can be published explicitly, causing all its partitions to be published automatically. Addition/removal of a partition causes it to be likewise added to or removed from the publication. 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(NOT) clauses in tsquery searches (Nikita Glukhov, Alexander Korotkov, Tom Lane, Julien Rouhaud)","part":"changes","patch_ids":["3777fee47d2c18ce8371efd83b1860b3"],"related_changes":[],"relations":[],"section":"服务器 / 索引","section_path":["服务器","索引"],"source_commits":["4b754d6c1"],"source_entry_id":"13.0/changes/009","source_hash":"1dc0ac4918120ac49f0339b516cd8a92809f6a3f3d7193316568420d7766a9fc","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","statement_hash":"838742eb6724d663a97d7eb0c89892e5a0bfa9188f266279e4c7a46a328137d3","text":"允许 GIN 索引更高效地处理 tsquery 搜索中的 !（NOT）子句（Nikita Glukhov，Alexander Korotkov，Tom Lane，Julien Rouhaud）§","title":"允许 GIN 索引更高效地处理 tsquery 搜索中的 !（NOT）子句","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["911e70207"],"commit_groups":[["911e70207"]],"commits":["911e70207"],"cves":[],"db_id":"afc765d9b390c3bbd435caf0e408dff0","html":"\u003cp\u003e允许\u003ca href=\"/docs/13/sql-createindex.html\" title=\"CREATE INDEX\"\u003e索引操作符类\u003c/a\u003e接受参数（Nikita Glukhov）\u003ca href=\"https://postgr.es/c/911e70207\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-00afdb908268ed96-1","identity_text":"Allow index operator classes to take parameters (Nikita Glukhov)","part":"changes","patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"related_changes":[{"db_id":"c7ba4ea9be933a69c1ae4032bdf26ff9","evidence":{"ambiguous_patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"same_day":true},"kind":"related","label":"13.0","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","title":"允许 CREATE INDEX 指定 GiST 签名长度和整数范围的最大数量","url":"/docs/compare/?release=13.0#13.0-00afdb908268ed96-2","version":"13.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"same_day":true},"rule":2,"target":"c7ba4ea9be933a69c1ae4032bdf26ff9","type":"related"}],"section":"服务器 / 索引","section_path":["服务器","索引"],"source_commits":["911e70207"],"source_entry_id":"13.0/changes/010","source_hash":"0f9476c7168b00a1e61423650c5f35cd1e09dbf327ced72223f8c6f138414b3b","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","statement_hash":"9525aa704c4214fe4350f3e334c6d630248c39a93a9ef32c1e4c677c8c74c2f5","text":"允许索引操作符类接受参数（Nikita Glukhov）§","title":"允许索引操作符类接受参数","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["911e70207"],"commit_groups":[["911e70207"]],"commits":["911e70207"],"cves":[],"db_id":"c7ba4ea9be933a69c1ae4032bdf26ff9","html":"\u003cp\u003e允许 \u003ccode\u003eCREATE INDEX\u003c/code\u003e 指定 GiST 签名长度和整数范围的最大数量（Nikita Glukhov）\u003ca href=\"https://postgr.es/c/911e70207\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e在四字节和八字节\u003ca href=\"/docs/13/intarray.html\" title=\"F.18. intarray\"\u003e整数数组\u003c/a\u003e、\u003ca href=\"/docs/13/textsearch.html\" title=\"第 12 章 全文检索\"\u003etsvector\u003c/a\u003e、\u003ca href=\"/docs/13/pgtrgm.html\" title=\"F.31. pg_trgm\"\u003epg_trgm\u003c/a\u003e、\u003ca href=\"/docs/13/ltree.html\" title=\"F.21. ltree\"\u003eltree\u003c/a\u003e和\u003ca href=\"/docs/13/hstore.html\" title=\"F.16. hstore\"\u003ehstore\u003c/a\u003e列上创建的索引，现在可以控制这些 GiST 索引参数，而不再只能使用默认值。\u003c/p\u003e","id":"13.0-00afdb908268ed96-2","identity_text":"Allow CREATE INDEX to specify the GiST signature length and maximum number of integer ranges (Nikita Glukhov) Indexes created on four and eight-byte integer array, tsvector, pgtrgm , ltree , and hstore columns can now control these GiST index parameters, rather than using the defaults.","part":"changes","patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"related_changes":[{"db_id":"afc765d9b390c3bbd435caf0e408dff0","evidence":{"ambiguous_patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"same_day":true},"kind":"related","label":"13.0","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","title":"允许索引操作符类接受参数","url":"/docs/compare/?release=13.0#13.0-00afdb908268ed96-1","version":"13.0"}],"relations":[{"evidence":{"ambiguous_patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"patch_ids":["5d17b7356f8a8c6cc4be66f2a9088b55"],"same_day":true},"rule":2,"target":"afc765d9b390c3bbd435caf0e408dff0","type":"related"}],"section":"服务器 / 索引","section_path":["服务器","索引"],"source_commits":["911e70207"],"source_entry_id":"13.0/changes/011","source_hash":"47f7609aa0fed7770f1d7940bf6a78b2301df1870d1ef7c62d273ddf64c90ec8","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","statement_hash":"4657e287462a6c024cbc4d7512fb6af446d72e0827a97dc15abd13095c084b98","text":"允许 CREATE INDEX 指定 GiST 签名长度和整数范围的最大数量（Nikita Glukhov）§ 在四字节和八字节整数数组、tsvector、pg_trgm、ltree和hstore列上创建的索引，现在可以控制这些 GiST 索引参数，而不再只能使用默认值。","title":"允许 CREATE INDEX 指定 GiST 签名长度和整数范围的最大数量","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["fbbf68094"],"commit_groups":[["fbbf68094"]],"commits":["fbbf68094"],"cves":[],"db_id":"18782b2fdacfe578e9cfe56330a6800b","html":"\u003cp\u003e禁止将使用非默认排序规则的索引\u003ca href=\"/docs/13/sql-altertable.html\" title=\"ALTER TABLE\"\u003e添加\u003c/a\u003e为表的唯一约束或主键约束（Tom Lane）\u003ca href=\"https://postgr.es/c/fbbf68094\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e索引的排序规则必须与底层列的排序规则匹配，但 \u003ccode\u003eALTER TABLE\u003c/code\u003e 以前未检查这一点。\u003c/p\u003e","id":"13.0-90aca664fe16e695","identity_text":"Prevent indexes that use non-default collations from being added as a table's unique or primary key constraint (Tom Lane) The index's collation must match that of the underlying column, but ALTER TABLE previously failed to check this.","part":"changes","patch_ids":["209c4eded0352d27fdebc9be81626b6e"],"related_changes":[],"relations":[],"section":"服务器 / 索引","section_path":["服务器","索引"],"source_commits":["fbbf68094"],"source_entry_id":"13.0/changes/012","source_hash":"4b2a2b835f60f4e244b0192b712a2f81e4b40bbe118c2b031a1f18dc4882400e","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.3","statement_hash":"cec6b4927e06e45032c5699bdf54a07d4ce44f7baf1012b2fa1dbc013b7e967b","text":"禁止将使用非默认排序规则的索引添加为表的唯一约束或主键约束（Tom Lane）§ 索引的排序规则必须与底层列的排序规则匹配，但 ALTER TABLE 以前未检查这一点。","title":"禁止将使用非默认排序规则的索引添加为表的唯一约束或主键约束","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a80818605"],"commit_groups":[["a80818605"]],"commits":["a80818605"],"cves":[],"db_id":"e03a2f4748c20b9fa3d57bebb562d54d","html":"\u003cp\u003e改进优化器对包含和匹配操作符的\u003ca href=\"/docs/13/planner-stats-details.html\" title=\"第 71 章 规划器如何使用统计信息\"\u003e选择率\u003c/a\u003e估计（Tom Lane）\u003ca href=\"https://postgr.es/c/a80818605\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-e9f30b93e74d433e","identity_text":"Improve the optimizer's selectivity estimation for containment/match operators (Tom Lane)","part":"changes","patch_ids":["e0a203af7ecf47c845d60dffea038bd8"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["a80818605"],"source_entry_id":"13.0/changes/013","source_hash":"db8598d459670ad5b71679fbbfb2011cf1b783a366e1368ef138427d63e06e8f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.4","statement_hash":"d0efeabdaee1d449eb29f81fdd08331ec5d70d7df958c8731c07e08e2e2efae9","text":"改进优化器对包含和匹配操作符的选择率估计（Tom Lane）§","title":"改进优化器对包含和匹配操作符的选择率估计","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d06215d03"],"commit_groups":[["d06215d03"]],"commits":["d06215d03"],"cves":[],"db_id":"d1b8fe7431b3c7b3e9f713d6f2cd914b","html":"\u003cp\u003e允许为\u003ca href=\"/docs/13/sql-createstatistics.html\" title=\"CREATE STATISTICS\"\u003e扩展统计信息\u003c/a\u003e设置\u003ca href=\"/docs/13/sql-altertable.html\" title=\"ALTER TABLE\"\u003e统计目标\u003c/a\u003e（Tomas Vondra）\u003ca href=\"https://postgr.es/c/d06215d03\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这通过新的命令选项 \u003ccode\u003eALTER STATISTICS ... SET STATISTICS\u003c/code\u003e 控制。以前，它基于更通用的统计目标设置计算得出。\u003c/p\u003e","id":"13.0-97394fe02733bbe0","identity_text":"Allow setting the statistics target for extended statistics (Tomas Vondra) This is controlled with the new command option ALTER STATISTICS ... SET STATISTICS. Previously this was computed based on more general statistics target settings.","part":"changes","patch_ids":["79fb7d0e773a57353956b6aaa9d857f0"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["d06215d03"],"source_entry_id":"13.0/changes/014","source_hash":"d50bde3e1bcd3c65174901e0b9ed6e782af4e03a8a8e3e64b9df02201c65fab1","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.4","statement_hash":"ac0933c8c7c890731e4fc0a4e3f8eb34b4e2106404775577b357aea6fe7fc26b","text":"允许为扩展统计信息设置统计目标（Tomas Vondra）§ 这通过新的命令选项 ALTER STATISTICS ... SET STATISTICS 控制。以前，它基于更通用的统计目标设置计算得出。","title":"允许为扩展统计信息设置统计目标","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["aaa676187","eae056c19"],"commit_groups":[["aaa676187"],["eae056c19"]],"commits":["aaa676187","eae056c19"],"cves":[],"db_id":"ea0131e2b4726edb47e2476c2d94fb81","html":"\u003cp\u003e允许在单个查询中使用多个扩展统计对象（Tomas Vondra）\u003ca href=\"https://postgr.es/c/aaa676187\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/eae056c19\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-afd106a80b310e09","identity_text":"Allow use of multiple extended statistics objects in a single query (Tomas Vondra)","part":"changes","patch_ids":["0517460781f8025da7b77fa6bc8064f3","93a0e941b5a99c891e70cb6275232dfd"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["aaa676187","eae056c19"],"source_entry_id":"13.0/changes/015","source_hash":"a06a591b00c801eb07849c0caa2b451e1ff4837e89ae9e5aa85fc35909a5d0db","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.4","statement_hash":"6291ceaadec03b1969b571f95fe0f7c568efd1c25a1ae62e3aa6a503bf2ca415","text":"允许在单个查询中使用多个扩展统计对象（Tomas Vondra）§ §","title":"允许在单个查询中使用多个扩展统计对象","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["8f321bd16","ccaa3569f","e83daa7e3"],"commit_groups":[["8f321bd16"],["ccaa3569f"],["e83daa7e3"]],"commits":["8f321bd16","ccaa3569f","e83daa7e3"],"cves":[],"db_id":"6806eac80c0336a665b6e2df84c0f155","html":"\u003cp\u003e允许将扩展统计对象用于 OR 子句和 \u003ca href=\"/docs/13/functions-subquery.html\" title=\"9.23. 子查询表达式\"\u003eIN\u003c/a\u003e/\u003ccode\u003eANY\u003c/code\u003e 常量列表（Pierre Ducroquet，Tomas Vondra）\u003ca href=\"https://postgr.es/c/8f321bd16\"\u003e§\u003c/a\u003e \u003ca 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常量列表","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["7266d0997","a9ae99d01"],"commit_groups":[["7266d0997"],["a9ae99d01"]],"commits":["7266d0997","a9ae99d01"],"cves":[],"db_id":"4bad3aab680b71cc3601066e7e3a5065","html":"\u003cp\u003e如果 \u003ccode\u003eFROM\u003c/code\u003e 子句中的函数求值为常量，则允许将其上拉（内联）（Alexander Kuzmenkov，Aleksandr Parfenov）\u003ca href=\"https://postgr.es/c/7266d0997\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/a9ae99d01\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-2015bf37cdd6ccee","identity_text":"Allow functions in FROM clauses to be pulled up (inlined) if they evaluate to constants (Alexander Kuzmenkov, Aleksandr Parfenov)","part":"changes","patch_ids":["1348da700e41cce5f75d2f64f7e6cc31","ac2fe31721e84f58dcff2b6ef7433b5c"],"related_changes":[],"relations":[],"section":"服务器 / 优化器","section_path":["服务器","优化器"],"source_commits":["7266d0997","a9ae99d01"],"source_entry_id":"13.0/changes/017","source_hash":"0dce30a490d80789dc0670de01eb156848407463f779494fc42a5aabef06fdaa","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.4","statement_hash":"c65bcc23a4c1d5235891d4b7a71178641c78391779ea64934861403c844b8390","text":"如果 FROM 子句中的函数求值为常量，则允许将其上拉（内联）（Alexander Kuzmenkov，Aleksandr Parfenov）§ §","title":"如果 FROM 子句中的函数求值为常量，则允许将其上拉（内联）","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["94e454cdd","d2d8a229b"],"commit_groups":[["94e454cdd"],["d2d8a229b"]],"commits":["94e454cdd","d2d8a229b"],"cves":[],"db_id":"6f3fd1946c685503344ef054a587b1dd","html":"\u003cp\u003e实现\u003ca href=\"/docs/13/runtime-config-query.html#GUC-ENABLE-INCREMENTAL-SORT\"\u003e增量排序\u003c/a\u003e（James Coleman，Alexander Korotkov，Tomas Vondra）\u003ca href=\"https://postgr.es/c/d2d8a229b\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/94e454cdd\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e如果已知查询的中间结果按照所需排序顺序的一个或多个前导键排好序，则可以将前导键相同的行分批排序，只考虑剩余键即可完成额外的排序。\u003c/p\u003e\n\u003cp\u003e如有需要，可以使用\u003ca href=\"/docs/13/runtime-config-query.html#GUC-ENABLE-INCREMENTAL-SORT\"\u003eenable_incremental_sort\u003c/a\u003e控制此行为。\u003c/p\u003e","id":"13.0-fbd6a27f114123a3","identity_text":"Implement incremental sorting (James Coleman, Alexander Korotkov, Tomas Vondra) If an intermediate query result is known to be sorted by one or more leading keys of a required sort ordering, the additional sorting can be done considering only the remaining keys, if the rows are sorted in batches that have equal leading keys. If necessary, this can be controlled using guc-enable-incremental-sort .","part":"changes","patch_ids":["278a92e39d69c168ad24a9167f2174b7","3dc77609ae64140459d9a9afec908107"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["94e454cdd","d2d8a229b"],"source_entry_id":"13.0/changes/018","source_hash":"7326147e882b0a4166ec3b84287d9b9d0920e4953c41bfd832ae421a2029ff7b","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"b7d27834a05b9b8046d54286391fa61e92ec190e4bfa43505d0a8604e9f4ed8c","text":"实现增量排序（James Coleman，Alexander Korotkov，Tomas Vondra）§ § 如果已知查询的中间结果按照所需排序顺序的一个或多个前导键排好序，则可以将前导键相同的行分批排序，只考虑剩余键即可完成额外的排序。 如有需要，可以使用enable_incremental_sort控制此行为。","title":"实现增量排序","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["71dcd7438"],"commit_groups":[["71dcd7438"]],"commits":["71dcd7438"],"cves":[],"db_id":"7be3e1713fbe303ab454a9c923d9a047","html":"\u003cp\u003e提高 \u003ca href=\"/docs/13/datatype-net-types.html#DATATYPE-INET\" title=\"8.9.1. inet\"\u003einet\u003c/a\u003e 值的排序性能（Brandur Leach）\u003ca href=\"https://postgr.es/c/71dcd7438\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-7cf2b4fcd6a90e43","identity_text":"Improve the performance of sorting inet values (Brandur Leach)","part":"changes","patch_ids":["6b8159f858e88c6984f443855e76682a"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["71dcd7438"],"source_entry_id":"13.0/changes/019","source_hash":"83a3067bfd228a4d71e4935e7691c9be60dd5b90024a43f53f37464ca3988502","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"fcdbcac1c219036114076c98db61e8bfcccee2b814ca49423663db86ecc69d1c","text":"提高 inet 值的排序性能（Brandur Leach）§","title":"提高 inet 值的排序性能","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["1f39bce02","78530c8e7","dd8e19132"],"commit_groups":[["1f39bce02"],["78530c8e7"],["dd8e19132"]],"commits":["1f39bce02","78530c8e7","dd8e19132"],"cves":[],"db_id":"6442f5ad4bd8d8b4591ad34801b96bb9","html":"\u003cp\u003e允许\u003ca href=\"/docs/13/runtime-config-query.html#GUC-ENABLE-HASHAGG\"\u003ehash 聚合\u003c/a\u003e对大型聚合结果集使用磁盘存储（Jeff Davis）\u003ca href=\"https://postgr.es/c/1f39bce02\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/dd8e19132\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/78530c8e7\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，如果预计 hash 聚合使用的内存会超过\u003ca href=\"/docs/13/runtime-config-resource.html#GUC-WORK-MEM\"\u003ework_mem\u003c/a\u003e，就会避免使用它。现在，即使如此也可以选择 hash 聚合计划。如果 hash 表超过 \u003ccode\u003ework_mem\u003c/code\u003e 乘以\u003ca href=\"/docs/13/runtime-config-resource.html#GUC-HASH-MEM-MULTIPLIER\"\u003ehash_mem_multiplier\u003c/a\u003e的大小，就会溢写到磁盘。\u003c/p\u003e\n\u003cp\u003e这一行为通常优于旧行为：以前，一旦选择了 hash 聚合，无论 hash 表增长到多大，都会一直保留在内存中；如果规划器估计有误，它可能变得非常大。如有需要，可以通过增大 \u003ccode\u003ehash_mem_multiplier\u003c/code\u003e 来获得类似旧行为的效果。\u003c/p\u003e","id":"13.0-15d590cb812ca7d3","identity_text":"Allow hash aggregation to use disk storage for large aggregation result sets (Jeff Davis) Previously, hash aggregation was avoided if it was expected to use more than guc-work-mem memory. Now, a hash aggregation plan can be chosen despite that. The hash table will be spilled to disk if it exceeds work_mem times guc-hash-mem-multiplier . This behavior is normally preferable to the old behavior, in which once hash aggregation had been chosen, the hash table would be kept in memory no matter how large it got — which could be very large if the planner had misestimated. If necessary, behavior similar to that can be obtained by increasing hash_mem_multiplier.","part":"changes","patch_ids":["8b1a1c056d175ee893c832f51943a10f","aea0626a54fed81f85e92bd61da850dd","c7f1e60b068a27818a75177db44aedde"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["1f39bce02","78530c8e7","dd8e19132"],"source_entry_id":"13.0/changes/020","source_hash":"6505ea5cd4b84a9b5dc886175f0abcc90e064e5cc54d158934cfa5585220afae","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"36045a241dec61a916dd7330db7524f0c2dc5f27ad197295e958a18649895843","text":"允许hash 聚合对大型聚合结果集使用磁盘存储（Jeff Davis）§ § § 以前，如果预计 hash 聚合使用的内存会超过work_mem，就会避免使用它。现在，即使如此也可以选择 hash 聚合计划。如果 hash 表超过 work_mem 乘以hash_mem_multiplier的大小，就会溢写到磁盘。 这一行为通常优于旧行为：以前，一旦选择了 hash 聚合，无论 hash 表增长到多大，都会一直保留在内存中；如果规划器估计有误，它可能变得非常大。如有需要，可以通过增大 hash_mem_multiplier 来获得类似旧行为的效果。","title":"允许hash 聚合对大型聚合结果集使用磁盘存储","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["b07642dbc"],"commit_groups":[["b07642dbc"]],"commits":["b07642dbc"],"cves":[],"db_id":"ff243b43c207ec3e528bcb615e41e0ad","html":"\u003cp\u003e允许插入操作也触发\u003ca href=\"/docs/13/maintenance.html#AUTOVACUUM\" title=\"24.1.6. 自动清理守护进程\"\u003e自动清理\u003c/a\u003e中的清理活动，而不再仅由更新和删除触发（Laurenz Albe，Darafei Praliaskouski）\u003ca href=\"https://postgr.es/c/b07642dbc\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，仅有插入活动时会触发自动分析，但不会触发自动清理，理由是不存在需要移除的死元组。然而，清理扫描还有其他有益的副作用，例如设置页面全可见位，从而提高仅索引扫描的效率。另外，让仅插入的表接受周期性清理，有助于分散\u003cspan\u003e“\u003cspan\u003e冻结\u003c/span\u003e”\u003c/span\u003e旧元组的工作量，避免整个表同时达到防回卷阈值时，突然需要执行大量冻结工作。\u003c/p\u003e\n\u003cp\u003e如有需要，可以通过新参数\u003ca href=\"/docs/13/runtime-config-autovacuum.html#GUC-AUTOVACUUM-VACUUM-INSERT-THRESHOLD\"\u003eautovacuum_vacuum_insert_threshold\u003c/a\u003e和\u003ca href=\"/docs/13/runtime-config-autovacuum.html#GUC-AUTOVACUUM-VACUUM-INSERT-SCALE-FACTOR\"\u003eautovacuum_vacuum_insert_scale_factor\u003c/a\u003e，或等价的表存储选项来调整此行为。\u003c/p\u003e","id":"13.0-3ac633baec8f030f","identity_text":"Allow inserts, not only updates and deletes, to trigger vacuuming activity in autovacuum (Laurenz Albe, Darafei Praliaskouski) Previously, insert-only activity would trigger auto-analyze but not auto-vacuum, on the grounds that there could not be any dead tuples to remove. However, a vacuum scan has other useful side-effects such as setting page-all-visible bits, which improves the efficiency of index-only scans. Also, allowing an insert-only table to receive periodic vacuuming helps to spread out the work of freezing old tuples, so that there is not suddenly a large amount of freezing work to do when the entire table reaches the anti-wraparound threshold all at once. If necessary, this behavior can be adjusted with the new parameters guc-autovacuum-vacuum-insert-threshold and guc-autovacuum-vacuum-insert-scale-factor , or the equivalent table storage options.","part":"changes","patch_ids":["dd4a38c2cef7db1665e28a1a9ff16317"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["b07642dbc"],"source_entry_id":"13.0/changes/021","source_hash":"d039b6b317faabbf49abde232f85e0528f56777455f2ca9be46ada3232d18fdc","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"a75fea2e370989e623b4dd0557b356397fde08d58f02154768c4bf5eeae19679","text":"允许插入操作也触发自动清理中的清理活动，而不再仅由更新和删除触发（Laurenz Albe，Darafei Praliaskouski）§ 以前，仅有插入活动时会触发自动分析，但不会触发自动清理，理由是不存在需要移除的死元组。然而，清理扫描还有其他有益的副作用，例如设置页面全可见位，从而提高仅索引扫描的效率。另外，让仅插入的表接受周期性清理，有助于分散“冻结”旧元组的工作量，避免整个表同时达到防回卷阈值时，突然需要执行大量冻结工作。 如有需要，可以通过新参数autovacuum_vacuum_insert_threshold和autovacuum_vacuum_insert_scale_factor，或等价的表存储选项来调整此行为。","title":"允许插入操作也触发自动清理中的清理活动，而不再仅由更新和删除触发","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["fc34b0d9d"],"commit_groups":[["fc34b0d9d"]],"commits":["fc34b0d9d"],"cves":[],"db_id":"295f700db62c2f12965dacb55956fa60","html":"\u003cp\u003e增加\u003ca href=\"/docs/13/runtime-config-resource.html#GUC-MAINTENANCE-IO-CONCURRENCY\"\u003emaintenance_io_concurrency\u003c/a\u003e参数，以控制维护操作的 I/O 并发度（Thomas Munro）\u003ca href=\"https://postgr.es/c/fc34b0d9d\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-2086e47d6fa03cdd","identity_text":"Add guc-maintenance-io-concurrency parameter to control I/O concurrency for maintenance operations (Thomas Munro)","part":"changes","patch_ids":["12c1a95ce51d50f455dccf8066eba9e7"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["fc34b0d9d"],"source_entry_id":"13.0/changes/022","source_hash":"efd0b9ce10b052bb1682f544584949baad36d92419138589c516bf10911ee3ea","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"1d736eb5805e08baea756c991a9fbab291d5b7e7cb5fb9f84c3ba70281036636","text":"增加maintenance_io_concurrency参数，以控制维护操作的 I/O 并发度（Thomas Munro）§","title":"增加maintenance_io_concurrency参数，以控制维护操作的 I/O 并发度","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["c6b92041d"],"commit_groups":[["c6b92041d"]],"commits":["c6b92041d"],"cves":[],"db_id":"30220ba09b5895e9693d456c854b4b9a","html":"\u003cp\u003e如果\u003ca href=\"/docs/13/runtime-config-wal.html#GUC-WAL-LEVEL\"\u003ewal_level\u003c/a\u003e为 \u003ccode\u003eminimal\u003c/code\u003e，则允许在创建或重写关系的事务期间跳过 \u003cacronym\u003eWAL\u003c/acronym\u003e 写入（Kyotaro Horiguchi）\u003ca href=\"https://postgr.es/c/c6b92041d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e对于大于\u003ca href=\"/docs/13/runtime-config-wal.html#GUC-WAL-SKIP-THRESHOLD\"\u003ewal_skip_threshold\u003c/a\u003e的关系，会对其文件执行 fsync，而不生成 \u003cacronym\u003eWAL\u003c/acronym\u003e。以前，只有 \u003ccode\u003eCOPY\u003c/code\u003e 操作会这样处理，但其实现有一个缺陷，可能在崩溃恢复期间导致数据丢失。\u003c/p\u003e","id":"13.0-b85de750769c20fe","identity_text":"Allow WAL writes to be skipped during a transaction that creates or rewrites a relation, if guc-wal-level is minimal (Kyotaro Horiguchi) Relations larger than guc-wal-skip-threshold will have their files fsync'ed rather than generating WAL. Previously this was done only for COPY operations, but the implementation had a bug that could cause data loss during crash recovery.","part":"changes","patch_ids":["3102d077d66fee2dfbbf3f49416f0976"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["c6b92041d"],"source_entry_id":"13.0/changes/023","source_hash":"cd126d964c1306b4eb5abb3509e5c4f2239cf7bcd5930659493c8ade889a8c1f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"7bc93299750a74078e761ced8ff9f816bc9639125caec32a7497914dcc49918a","text":"如果wal_level为 minimal，则允许在创建或重写关系的事务期间跳过 WAL 写入（Kyotaro Horiguchi）§ 对于大于wal_skip_threshold的关系，会对其文件执行 fsync，而不生成 WAL。以前，只有 COPY 操作会这样处理，但其实现有一个缺陷，可能在崩溃恢复期间导致数据丢失。","title":"如果wal_level为 minimal，则允许在创建或重写关系的事务期间跳过 WAL 写入","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["e6d806952"],"commit_groups":[["e6d806952"]],"commits":["e6d806952"],"cves":[],"db_id":"a9b6bade4ee22fc67b760b2ea0980f08","html":"\u003cp\u003e提高使用大量表空间时重放 \u003ca href=\"/docs/13/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003ccode\u003eDROP DATABASE\u003c/code\u003e\u003c/a\u003e 命令的性能（Fujii Masao）\u003ca href=\"https://postgr.es/c/e6d806952\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-2bd61199dd73324a","identity_text":"Improve performance when replaying DROP DATABASE commands when many tablespaces are in use (Fujii Masao)","part":"changes","patch_ids":["c669522b6d5e90b906fc018e3b7c0f1a"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["e6d806952"],"source_entry_id":"13.0/changes/024","source_hash":"6344f97399fa516ff4358f637f8bbd4f4a7e21b925a687f1c72cb710a7191dba","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"9e4369a1bad90e265f2f0a1414b2171057535813f740f6d06bd1d84171530514","text":"提高使用大量表空间时重放 DROP DATABASE 命令的性能（Fujii Masao）§","title":"提高使用大量表空间时重放 DROP DATABASE 命令的性能","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["6d05086c0"],"commit_groups":[["6d05086c0"]],"commits":["6d05086c0"],"cves":[],"db_id":"1e9006896a1af69d834a155edb3255de","html":"\u003cp\u003e提高\u003ca href=\"/docs/13/sql-truncate.html\" title=\"TRUNCATE\"\u003e截断\u003c/a\u003e超大关系的性能（Kirk Jamison）\u003ca href=\"https://postgr.es/c/6d05086c0\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-48efa86846d0f12a","identity_text":"Improve performance for truncation of very large relations (Kirk Jamison)","part":"changes","patch_ids":["10115d396c71180e50c1b8fcf075a3fb"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["6d05086c0"],"source_entry_id":"13.0/changes/025","source_hash":"a74fce7166d12ebc59a9d7e2e907fa8a8b9248991de7cd81df67a8eb6e400cef","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"df9c6284cc83d08f40b230c5abfba2165dd6eba4883666826d24e121acb12f69","text":"提高截断超大关系的性能（Kirk Jamison）§","title":"提高截断超大关系的性能","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["11a078cf8"],"commit_groups":[["11a078cf8"]],"commits":["11a078cf8"],"cves":[],"db_id":"f5fb1b1f9ded8c1ceb227b00db1c2958","html":"\u003cp\u003e改进对经过 \u003ca href=\"/docs/13/storage-toast.html\" title=\"69.2. TOAST\"\u003e\u003cacronym\u003eTOAST\u003c/acronym\u003e\u003c/a\u003e 处理的值的起始字节的获取（Binguo Bao，Andrey Borodin）\u003ca href=\"https://postgr.es/c/11a078cf8\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，即使已知只需要起始的一部分字节，也会完整获取压缩的行外 \u003cacronym\u003eTOAST\u003c/acronym\u003e 值。现在，只获取足以生成结果的数据。\u003c/p\u003e","id":"13.0-78e12abcf4795b00","identity_text":"Improve retrieval of the leading bytes of TOAST'ed values (Binguo Bao, Andrey Borodin) Previously, compressed out-of-line TOAST values were fully fetched even when it's known that only some leading bytes are needed. Now, only enough data to produce the result is fetched.","part":"changes","patch_ids":["cef0836907cdb9beac39ce5b71086988"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["11a078cf8"],"source_entry_id":"13.0/changes/026","source_hash":"1c388da4bcfbb54bdeeb8251d35ba6b66b5eb69951c3822509bad3e4ba0841a1","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"bc342db307b119cd9c25d5ce61994249266ffa0a3ce8a83153209bcbf0b1dccd","text":"改进对经过 TOAST 处理的值的起始字节的获取（Binguo Bao，Andrey Borodin）§ 以前，即使已知只需要起始的一部分字节，也会完整获取压缩的行外 TOAST 值。现在，只获取足以生成结果的数据。","title":"改进对经过 TOAST 处理的值的起始字节的获取","variants":[],"version":"13.0"},{"also_in":[],"category":"performance","category_label":"Performance","commit_aliases":["51004c717","bb5ae8f6c","bca6e6435"],"commit_groups":[["51004c717"],["bb5ae8f6c"],["bca6e6435"]],"commits":["51004c717","bb5ae8f6c","bca6e6435"],"cves":[],"db_id":"39aeeff4a065d1e88fa614ebd7e37a10","html":"\u003cp\u003e提高 \u003ca href=\"/docs/13/sql-listen.html\" title=\"LISTEN\"\u003e\u003ccode\u003eLISTEN\u003c/code\u003e\u003c/a\u003e/\u003ccode\u003eNOTIFY\u003c/code\u003e 的性能（Martijn van Oosterhout，Tom Lane）\u003ca href=\"https://postgr.es/c/bca6e6435\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/51004c717\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/bb5ae8f6c\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-d2feeed792795170","identity_text":"Improve performance of LISTEN/NOTIFY (Martijn van Oosterhout, Tom Lane)","part":"changes","patch_ids":["7d646f6c58ff910e7dd9a5d0eb625fdc","94ae3f18f3c79d85a0a3e73c7c28a07b","df7551865fdd0590b5acb5ca137f3280"],"related_changes":[],"relations":[],"section":"服务器 / 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for query strings and extension scripts that contain many SQL statements (Amit Langote)","part":"changes","patch_ids":["1ab927c2f38b29e4895f038a2f2ec8e2"],"related_changes":[],"relations":[],"section":"服务器 / 一般性能","section_path":["服务器","一般性能"],"source_commits":["b5810de3f"],"source_entry_id":"13.0/changes/029","source_hash":"8fb7798c19e322d4dd0521369b4269d3f226e165d46a42e66bf6eeedf484aebd","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.5","statement_hash":"fef69d605d385fbcff9f772a04be8789d4733cd24dae1d94a1f66041d951ffe2","text":"减少包含大量 SQL 语句的查询字符串和扩展脚本的内存用量（Amit Langote）§","title":"减少包含大量 SQL 语句的查询字符串和扩展脚本的内存用量","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["33e05f89c","6b466bf5f","b7ce6de93"],"commit_groups":[["33e05f89c"],["6b466bf5f"],["b7ce6de93"]],"commits":["33e05f89c","6b466bf5f","b7ce6de93"],"cves":[],"db_id":"a81bca950723330723a396880d7230a2","html":"\u003cp\u003e允许 \u003ca href=\"/docs/13/sql-explain.html\" title=\"EXPLAIN\"\u003e\u003ccode\u003eEXPLAIN\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/docs/13/auto-explain.html\" title=\"F.4. auto_explain\"\u003eauto_explain\u003c/a\u003e、\u003ca href=\"/docs/13/maintenance.html#AUTOVACUUM\" title=\"24.1.6. 自动清理守护进程\"\u003e自动清理\u003c/a\u003e和\u003ca href=\"/docs/13/pgstatstatements.html\" title=\"F.29. pg_stat_statements\"\u003epg_stat_statements\u003c/a\u003e跟踪 \u003cacronym\u003eWAL\u003c/acronym\u003e 使用统计信息（Kirill Bychik，Julien Rouhaud）\u003ca href=\"https://postgr.es/c/6b466bf5f\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/33e05f89c\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/b7ce6de93\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-8954db92bf2ae4b2","identity_text":"Allow EXPLAIN, auto-explain , autovacuum, and pgstatstatements to track WAL usage statistics (Kirill Bychik, Julien Rouhaud)","part":"changes","patch_ids":["31925c9b2818b267801035402c499e9e","6c03acae0cf345cf70fa5c0ee8270beb","fb3d78d447fffec325ed73861b82ea2a"],"related_changes":[],"relations":[],"section":"服务器 / 监控","section_path":["服务器","监控"],"source_commits":["33e05f89c","6b466bf5f","b7ce6de93"],"source_entry_id":"13.0/changes/030","source_hash":"fe57ed5e272beb286e871294fb61af1e52d3915327a84f1534d0c7254cee6e56","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.6","statement_hash":"ad6c2f4a105ad1fbba32edbf61724b4df3fc58f2f02ab482297d761eceedfbf0","text":"允许 EXPLAIN、auto_explain、自动清理和pg_stat_statements跟踪 WAL 使用统计信息（Kirill Bychik，Julien Rouhaud）§ § §","title":"允许 EXPLAIN、auto_explain、自动清理和pg_stat_statements跟踪 WAL 使用统计信息","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["6e3e6cc0e"],"commit_groups":[["6e3e6cc0e"]],"commits":["6e3e6cc0e"],"cves":[],"db_id":"cf598e0ff1ed5c6895694ec0468b72fa","html":"\u003cp\u003e允许抽样记录 SQL 语句，而不必记录全部语句（Adrien Nayrat）\u003ca href=\"https://postgr.es/c/6e3e6cc0e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e对于耗时超过\u003ca href=\"/docs/13/runtime-config-logging.html#GUC-LOG-MIN-DURATION-SAMPLE\"\u003elog_min_duration_sample\u003c/a\u003e的语句，将按\u003ca href=\"/docs/13/runtime-config-logging.html#GUC-LOG-STATEMENT-SAMPLE-RATE\"\u003elog_statement_sample_rate\u003c/a\u003e指定的比例记录日志。\u003c/p\u003e","id":"13.0-40cc7222acb2a242","identity_text":"Allow a sample of SQL statements, rather than all statements, to be logged (Adrien Nayrat) A guc-log-statement-sample-rate fraction of those statements taking more than guc-log-min-duration-sample duration will be logged.","part":"changes","patch_ids":["d42d5bf0a2809f3449a7fdf44b63bd36"],"related_changes":[],"relations":[],"section":"服务器 / 监控","section_path":["服务器","监控"],"source_commits":["6e3e6cc0e"],"source_entry_id":"13.0/changes/031","source_hash":"100d1f479e612787e8ef6dacf4641291e7cc0aaa46bc87560848bbdf111c5a4a","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.6","statement_hash":"64e01dd1f610133710962064b5af48ec6117ad653650460f9708d279b8b41a9c","text":"允许抽样记录 SQL 语句，而不必记录全部语句（Adrien Nayrat）§ 对于耗时超过log_min_duration_sample的语句，将按log_statement_sample_rate指定的比例记录日志。","title":"允许抽样记录 SQL 语句，而不必记录全部语句","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["70a7b4776"],"commit_groups":[["70a7b4776"]],"commits":["70a7b4776"],"cves":[],"db_id":"235ce2c10b18e0cca4fef6d1580b942e","html":"\u003cp\u003e将后端类型添加到 \u003ca href=\"/docs/13/runtime-config-logging.html\" title=\"19.8. 错误报告和日志\"\u003ecsvlog\u003c/a\u003e 日志输出中，并允许选择将其加入\u003ca href=\"/docs/13/runtime-config-logging.html#GUC-LOG-LINE-PREFIX\"\u003elog_line_prefix\u003c/a\u003e日志输出（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/70a7b4776\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-45b357ebf41f9dea","identity_text":"Add the backend type to csvlog and optionally guc-log-line-prefix log output (Peter Eisentraut)","part":"changes","patch_ids":["b3bde18d195ab3e72dc9c103507df8a9"],"related_changes":[],"relations":[],"section":"服务器 / 监控","section_path":["服务器","监控"],"source_commits":["70a7b4776"],"source_entry_id":"13.0/changes/032","source_hash":"286f96e316ce9805db24da0ccaed504a25d16433ac06fb901d54b2facf785992","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.6","statement_hash":"0279638c7ed6b0977a0432345b3efaa639531996cb1b75ed5b95926de0099acf","text":"将后端类型添加到 csvlog 日志输出中，并允许选择将其加入log_line_prefix日志输出（Peter Eisentraut）§","title":"将后端类型添加到 csvlog 日志输出中，并允许选择将其加入log_line_prefix日志输出","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["0b34e7d30","ba79cb5dc"],"commit_groups":[["0b34e7d30"],["ba79cb5dc"]],"commits":["0b34e7d30","ba79cb5dc"],"cves":[],"db_id":"0eda34f47222bdf23c7178dbd7af0d7d","html":"\u003cp\u003e改进对预备语句参数日志记录的控制（Alexey Bashtanov，Álvaro Herrera）\u003ca href=\"https://postgr.es/c/ba79cb5dc\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/0b34e7d30\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003cacronym\u003eGUC\u003c/acronym\u003e 设置\u003ca href=\"/docs/13/runtime-config-logging.html#GUC-LOG-PARAMETER-MAX-LENGTH\"\u003elog_parameter_max_length\u003c/a\u003e控制记录未出错语句时输出的参数值的最大长度，而\u003ca href=\"/docs/13/runtime-config-logging.html#GUC-LOG-PARAMETER-MAX-LENGTH-ON-ERROR\"\u003elog_parameter_max_length_on_error\u003c/a\u003e对出错语句的日志执行相同控制。以前，发生错误时从不记录预备语句的参数。\u003c/p\u003e","id":"13.0-fd504c5b579e31ab","identity_text":"Improve control of 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设置log_parameter_max_length控制记录未出错语句时输出的参数值的最大长度，而log_parameter_max_length_on_error对出错语句的日志执行相同控制。以前，发生错误时从不记录预备语句的参数。","title":"改进对预备语句参数日志记录的控制","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["71a8a4f6e","8ff4d1277"],"commit_groups":[["71a8a4f6e"],["8ff4d1277"]],"commits":["71a8a4f6e","8ff4d1277"],"cves":[],"db_id":"3699aac582bc0eec78d81d91995a0354","html":"\u003cp\u003e允许在出错后记录函数调用回溯（Peter Eisentraut，Álvaro Herrera）\u003ca href=\"https://postgr.es/c/71a8a4f6e\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/8ff4d1277\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e新参数\u003ca href=\"/docs/13/runtime-config-developer.html#GUC-BACKTRACE-FUNCTIONS\"\u003ebacktrace_functions\u003c/a\u003e指定哪些 C 函数应在出错时生成回溯。\u003c/p\u003e","id":"13.0-586da60305fb7b08","identity_text":"Allow function call backtraces to be logged after errors (Peter Eisentraut, Álvaro Herrera) The new parameter guc-backtrace-functions specifies which C functions should generate backtraces on error.","part":"changes","patch_ids":["2b80fdf05010f615558b8d50d0660b55","65bdf4c3f4fde73434e42e2b52f30b2d"],"related_changes":[],"relations":[],"section":"服务器 / 监控","section_path":["服务器","监控"],"source_commits":["71a8a4f6e","8ff4d1277"],"source_entry_id":"13.0/changes/034","source_hash":"cabf22c51494731865edb0153f669c4f67bcef906a6b06ec9ede4bf55c823173","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.6","statement_hash":"7cbdab52fc728b1acb9d4e8935fac7e137cb73e832b5aeee1c1b420811870209","text":"允许在出错后记录函数调用回溯（Peter Eisentraut，Álvaro Herrera）§ § 新参数backtrace_functions指定哪些 C 函数应在出错时生成回溯。","title":"允许在出错后记录函数调用回溯","variants":[],"version":"13.0"},{"also_in":[],"category":"bugfix","category_label":"Bug fixes","commit_aliases":["15d13e829"],"commit_groups":[["15d13e829"]],"commits":["15d13e829"],"cves":[],"db_id":"66d40f6696228d548d1e3c049c034faa","html":"\u003cp\u003e将\u003ca href=\"/docs/13/sql-vacuum.html\" title=\"VACUUM\"\u003e清理\u003c/a\u003e的缓冲区计数器扩为 64 位，以避免溢出（Álvaro Herrera）\u003ca href=\"https://postgr.es/c/15d13e829\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-ff1361b3a01398ef","identity_text":"Make vacuum buffer counters 64-bits wide to avoid overflow (Álvaro Herrera)","part":"changes","patch_ids":["9ab19debd02d99f33901d8bd052a90c6"],"related_changes":[],"relations":[],"section":"服务器 / 监控","section_path":["服务器","监控"],"source_commits":["15d13e829"],"source_entry_id":"13.0/changes/035","source_hash":"e7ad771b468244f1b6bda4035a36701e031b8fa8eb99c340dc2cdf28aeb6d1f7","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.6","statement_hash":"a9f6ab10bce886b9cdab2527b5d0ac7a46e36bf00130974a62b0adf41efaca5a","text":"将清理的缓冲区计数器扩为 64 位，以避免溢出（Álvaro Herrera）§","title":"将清理的缓冲区计数器扩为 64 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pg_stat_progress_basebackup，以报告流式基础备份的进度","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a166d408e"],"commit_groups":[["a166d408e"]],"commits":["a166d408e"],"cves":[],"db_id":"a48a84e7270ac0e05b97a4d1d7fc798e","html":"\u003cp\u003e增加系统视图 \u003ca href=\"/docs/13/monitoring-stats.html#MONITORING-STATS-DYNAMIC-VIEWS-TABLE\" title=\"表 27.1. 动态统计视图\"\u003e\u003ccode\u003epg_stat_progress_analyze\u003c/code\u003e\u003c/a\u003e，以报告 \u003ca href=\"/docs/13/sql-analyze.html\" title=\"ANALYZE\"\u003eANALYZE\u003c/a\u003e 进度（Álvaro Herrera，Tatsuro Yamada，Vinayak Pokale）\u003ca href=\"https://postgr.es/c/a166d408e\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-0bdd020ddff779b0","identity_text":"Add system view pg_stat_progress_analyze to report ANALYZE progress (Álvaro Herrera, Tatsuro Yamada, Vinayak Pokale)","part":"changes","patch_ids":["6e4fa850d433253028205d99c7c88062"],"related_changes":[],"relations":[],"section":"服务器 / 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commands are allowed in read-only transaction mode (Robert Haas) This change also increases the number of utility commands that can run in parallel queries.","part":"changes","patch_ids":["7d03e2a8274f02d98945329edc68e378"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["2eb34ac36"],"source_entry_id":"13.0/changes/049","source_hash":"38e74dfdae557f021130443065eb136f078a15ff7eb2847bbbb73910f765b401","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.10","statement_hash":"8fe790f3c0f31459a2487610657bbf8256e98f5e3f53a9a453f354afdb4e3a57","text":"收紧关于只读事务模式下允许执行哪些实用命令的规则（Robert Haas）§ 此项修改还增加了可在并行查询中运行的实用命令数量。","title":"收紧关于只读事务模式下允许执行哪些实用命令的规则","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["c4a7a392e"],"commit_groups":[["c4a7a392e"]],"commits":["c4a7a392e"],"cves":[],"db_id":"9e89d87637b1b9e7d2afa6f5a00ae036","html":"\u003cp\u003e允许在服务器启动后修改\u003ca href=\"/docs/13/runtime-config-developer.html#GUC-ALLOW-SYSTEM-TABLE-MODS\"\u003eallow_system_table_mods\u003c/a\u003e（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/c4a7a392e\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-c73013e1bc78e314","identity_text":"Allow guc-allow-system-table-mods to be changed after server start (Peter Eisentraut)","part":"changes","patch_ids":["cd9fcb222f261787497a20ccb7db1cd7"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["c4a7a392e"],"source_entry_id":"13.0/changes/050","source_hash":"12b0ba5414b928e3869101f3390ccee89605a91c8904cce92c42c501494fc396","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.10","statement_hash":"740b7abc54511ea4ef9b23e51c8b02d585bcb76088b628e407a6a3aa43c2b817","text":"允许在服务器启动后修改allow_system_table_mods（Peter Eisentraut）§","title":"允许在服务器启动后修改allow_system_table_mods","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["508bf95b7"],"commit_groups":[["508bf95b7"]],"commits":["508bf95b7"],"cves":[],"db_id":"e31f4c31f6f53e0ec0a56b0bba443c2f","html":"\u003cp\u003e在设置\u003ca href=\"/docs/13/runtime-config-developer.html#GUC-ALLOW-SYSTEM-TABLE-MODS\"\u003eallow_system_table_mods\u003c/a\u003e时，禁止非超级用户修改系统表（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/508bf95b7\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，如果在服务器启动时设置了\u003ca href=\"/docs/13/runtime-config-developer.html#GUC-ALLOW-SYSTEM-TABLE-MODS\"\u003eallow_system_table_mods\u003c/a\u003e，非超级用户就可以对系统表执行 \u003ccode\u003eINSERT\u003c/code\u003e/\u003ccode\u003eUPDATE\u003c/code\u003e/\u003ccode\u003eDELETE\u003c/code\u003e 命令。\u003c/p\u003e","id":"13.0-ae1223a4f885c222","identity_text":"Disallow non-superusers from modifying system tables when guc-allow-system-table-mods is set (Peter Eisentraut) Previously, if guc-allow-system-table-mods was set at server start, non-superusers could issue INSERT/UPDATE/DELETE commands on system tables.","part":"changes","patch_ids":["5ac2835ad7c212ab93f49d2f731977c8"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["508bf95b7"],"source_entry_id":"13.0/changes/051","source_hash":"695c93636bc72f14b4a2580068be6b826cd70208926ef549f993e7c2242b8f5f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.10","statement_hash":"13747ec7824c60a01b218a1442d90ca658debc27b19da8f0d45e366bb272c133","text":"在设置allow_system_table_mods时，禁止非超级用户修改系统表（Peter Eisentraut）§ 以前，如果在服务器启动时设置了allow_system_table_mods，非超级用户就可以对系统表执行 INSERT/UPDATE/DELETE 命令。","title":"在设置allow_system_table_mods时，禁止非超级用户修改系统表","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["8f3ec75de"],"commit_groups":[["8f3ec75de"]],"commits":["8f3ec75de"],"cves":[],"db_id":"085a6be2139c683f39bc852acb6047da","html":"\u003cp\u003e在 Windows 上启用 \u003ca href=\"/docs/13/runtime-config-connection.html#RUNTIME-CONFIG-CONNECTION-SETTINGS\" title=\"19.3.1. 连接设置\"\u003eUnix 域套接字\u003c/a\u003e支持（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/8f3ec75de\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-b479106d389cd02d","identity_text":"Enable support for Unix-domain sockets on Windows (Peter Eisentraut)","part":"changes","patch_ids":["2df2d63d3558909645f3e95415869b78"],"related_changes":[],"relations":[],"section":"服务器 / 服务器配置","section_path":["服务器","服务器配置"],"source_commits":["8f3ec75de"],"source_entry_id":"13.0/changes/052","source_hash":"870ffbbc6dd8154cef58e9ddf5f2b6e790b52111b54f0fa717ae17d70f1aca5f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.3.10","statement_hash":"bc449d57dbff88a63bd227b82e80cc902427f599b4f3f72d74542af75a9cbf0d","text":"在 Windows 上启用 Unix 域套接字支持（Peter Eisentraut）§","title":"在 Windows 上启用 Unix 域套接字支持","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["1e6148032"],"commit_groups":[["1e6148032"]],"commits":["1e6148032"],"cves":[],"db_id":"d0505e2cb7f102e3e085be5d4d522af6","html":"\u003cp\u003e允许通过重载更改流复制配置设置（Sergei Kornilov）\u003ca href=\"https://postgr.es/c/1e6148032\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，更改\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-PRIMARY-CONNINFO\"\u003eprimary_conninfo\u003c/a\u003e和\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-PRIMARY-SLOT-NAME\"\u003eprimary_slot_name\u003c/a\u003e需要重启服务器。\u003c/p\u003e","id":"13.0-c4986c9592f7281e","identity_text":"Allow streaming replication configuration settings to be changed by reload (Sergei Kornilov) Previously, a server restart was required to change guc-primary-conninfo and guc-primary-slot-name .","part":"changes","patch_ids":["b24cedea135a297c03667904d6bfe734"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["1e6148032"],"source_entry_id":"13.0/changes/053","source_hash":"8b377a2a3c1cdc3523750f5f949de1ecf799d56c0dbcce8ec4bc8f63270a197b","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"463baf5e6ec87607839da705f542525b6a3154b4c33c9ef9f7a9c28bb01ee40d","text":"允许通过重载更改流复制配置设置（Sergei Kornilov）§ 以前，更改primary_conninfo和primary_slot_name需要重启服务器。","title":"允许通过重载更改流复制配置设置","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["092c6936d","329730827"],"commit_groups":[["092c6936d"],["329730827"]],"commits":["092c6936d","329730827"],"cves":[],"db_id":"ea2877c8cb768c4a3911e75b41113785","html":"\u003cp\u003e允许 \u003cacronym\u003eWAL\u003c/acronym\u003e 接收进程在未指定永久复制槽时使用临时复制槽（Peter Eisentraut，Sergei Kornilov）\u003ca href=\"https://postgr.es/c/329730827\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/092c6936d\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e可以使用\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-WAL-RECEIVER-CREATE-TEMP-SLOT\"\u003ewal_receiver_create_temp_slot\u003c/a\u003e启用此行为。\u003c/p\u003e","id":"13.0-c883484ddbcb0521","identity_text":"Allow WAL receivers to use a temporary replication slot when a permanent one is not specified (Peter Eisentraut, Sergei Kornilov) This behavior can be enabled using guc-wal-receiver-create-temp-slot .","part":"changes","patch_ids":["3c629804e6f984eceaf172deb0a1589d","de0e9551aee5abf4bbafd350c8d5c725"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["092c6936d","329730827"],"source_entry_id":"13.0/changes/054","source_hash":"6418c303e2a89e7b07e7524311a5c1adbf78f7d60f8eba946dff4f942940d46f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"cc6cafbb7486fa67f5b8d9adcb065a330360a8dbf8fe764f77d20ce2cfa198f3","text":"允许 WAL 接收进程在未指定永久复制槽时使用临时复制槽（Peter Eisentraut，Sergei Kornilov）§ § 可以使用wal_receiver_create_temp_slot启用此行为。","title":"允许 WAL 接收进程在未指定永久复制槽时使用临时复制槽","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["c65507763"],"commit_groups":[["c65507763"]],"commits":["c65507763"],"cves":[],"db_id":"110211fc7e7685a87adb6710b56b43e5","html":"\u003cp\u003e允许通过\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-MAX-SLOT-WAL-KEEP-SIZE\"\u003emax_slot_wal_keep_size\u003c/a\u003e限制复制槽的 WAL 存储量（Kyotaro Horiguchi）\u003ca href=\"https://postgr.es/c/c65507763\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e需要超过此值的复制槽会被标记为无效。\u003c/p\u003e","id":"13.0-0594c433c92f0e46","identity_text":"Allow WAL storage for replication slots to be limited by guc-max-slot-wal-keep-size (Kyotaro Horiguchi) Replication slots that would require exceeding this value are marked invalid.","part":"changes","patch_ids":["60c0ed98bb39ff47b8b77fc8c96f0458"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["c65507763"],"source_entry_id":"13.0/changes/055","source_hash":"870d0258609dbf9104424fc8cf7f075fc96c798f19ac27cf3d63e28bbd48fc70","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"916f9b60abad1762852445e4836b01f37ed5b1596ea142fda4a335c6368c40b0","text":"允许通过max_slot_wal_keep_size限制复制槽的 WAL 存储量（Kyotaro Horiguchi）§ 需要超过此值的复制槽会被标记为无效。","title":"允许通过max_slot_wal_keep_size限制复制槽的 WAL 存储量","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["496ee647e"],"commit_groups":[["496ee647e"]],"commits":["496ee647e"],"cves":[],"db_id":"f85af48367bb3e0eb4f9b26373696b68","html":"\u003cp\u003e允许\u003ca href=\"/docs/13/runtime-config-replication.html#GUC-PROMOTE-TRIGGER-FILE\"\u003e备库提升\u003c/a\u003e取消任何已请求的暂停（Fujii Masao）\u003ca href=\"https://postgr.es/c/496ee647e\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，备库处于暂停状态时无法提升。\u003c/p\u003e","id":"13.0-4c444aeb4e44e9d7","identity_text":"Allow standby promotion to cancel any requested pause (Fujii Masao) Previously, promotion could not happen while the standby was in paused state.","part":"changes","patch_ids":["7162fd0b5dda9a3a9555ae9ffcb3a29b"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["496ee647e"],"source_entry_id":"13.0/changes/056","source_hash":"b908fa6dc2dd2e7573a2aae30f1cdfc5227684b6a98a4220951455485d848f45","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"05d0f6083463f1395bd4d594aa8309af8f8c37e1011c001ce0d7924ac24c8d10","text":"允许备库提升取消任何已请求的暂停（Fujii Masao）§ 以前，备库处于暂停状态时无法提升。","title":"允许备库提升取消任何已请求的暂停","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["dc788668b"],"commit_groups":[["dc788668b"]],"commits":["dc788668b"],"cves":[],"db_id":"77b80acc34a77ffea5bc5dc1b6d4bb95","html":"\u003cp\u003e如果恢复未到达指定的\u003ca href=\"/docs/13/runtime-config-wal.html#RUNTIME-CONFIG-WAL-RECOVERY-TARGET\" title=\"19.5.5. 恢复目标\"\u003e恢复目标\u003c/a\u003e，则产生错误（Leif Gunnar Erlandsen，Peter Eisentraut）\u003ca href=\"https://postgr.es/c/dc788668b\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e以前，即使未到达目标，备库也会在到达 \u003cacronym\u003eWAL\u003c/acronym\u003e 末尾时自行提升。\u003c/p\u003e","id":"13.0-77bbff998a726842","identity_text":"Generate an error if recovery does not reach the specified recovery target (Leif Gunnar Erlandsen, Peter Eisentraut) Previously, a standby would promote itself upon reaching the end of WAL, even if the target was not reached.","part":"changes","patch_ids":["043d34097516e02b303b661eb5f157cc"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["dc788668b"],"source_entry_id":"13.0/changes/057","source_hash":"a4242e1d543af272ba3ca66e31dcea62ead47c486b8920f817a540d124a83f00","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"41149dd4a61e3bdf7ede3011b3776e9576e65e503f2a7a1b6e74fb33867d2c37","text":"如果恢复未到达指定的恢复目标，则产生错误（Leif Gunnar Erlandsen，Peter Eisentraut）§ 以前，即使未到达目标，备库也会在到达 WAL 末尾时自行提升。","title":"如果恢复未到达指定的恢复目标，则产生错误","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["cec2edfa7"],"commit_groups":[["cec2edfa7"]],"commits":["cec2edfa7"],"cves":[],"db_id":"7ccd917692de25d8ae4dd65d0306be35","html":"\u003cp\u003e允许控制逻辑解码在溢写到磁盘之前可以使用多少内存（Tomas Vondra，Dilip Kumar，Amit Kapila）\u003ca href=\"https://postgr.es/c/cec2edfa7\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这由\u003ca href=\"/docs/13/runtime-config-resource.html#GUC-LOGICAL-DECODING-WORK-MEM\"\u003elogical_decoding_work_mem\u003c/a\u003e控制。\u003c/p\u003e","id":"13.0-d02a302fadd64751","identity_text":"Allow control over how much memory is used by logical decoding before it is spilled to disk (Tomas Vondra, Dilip Kumar, Amit Kapila) This is controlled by guc-logical-decoding-work-mem .","part":"changes","patch_ids":["a532f21cdbf2e4ad880e24f2b6e4d871"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["cec2edfa7"],"source_entry_id":"13.0/changes/058","source_hash":"41a5662f166bb1635058f113c68f1c893ab8086221871e957115c781dacb8272","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"96de4a3584ba794d000c1756787dc0644dbcf908172edfb04b8958c27ac6474a","text":"允许控制逻辑解码在溢写到磁盘之前可以使用多少内存（Tomas Vondra，Dilip Kumar，Amit Kapila）§ 这由logical_decoding_work_mem控制。","title":"允许控制逻辑解码在溢写到磁盘之前可以使用多少内存","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["41c184bc6"],"commit_groups":[["41c184bc6"]],"commits":["41c184bc6"],"cves":[],"db_id":"a973ea53ebce821fb732b93cfef17dbb","html":"\u003cp\u003e允许在 \u003cacronym\u003eWAL\u003c/acronym\u003e 引用无效页面时仍继续恢复（Fujii Masao）\u003ca href=\"https://postgr.es/c/41c184bc6\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e可以使用\u003ca href=\"/docs/13/runtime-config-developer.html#GUC-IGNORE-INVALID-PAGES\"\u003eignore_invalid_pages\u003c/a\u003e启用此功能。\u003c/p\u003e","id":"13.0-71f98bc622cbce98","identity_text":"Allow recovery to continue even if invalid pages are referenced by WAL (Fujii Masao) This is enabled using guc-ignore-invalid-pages .","part":"changes","patch_ids":["8a817a60461bc1bb19f7799d2c329690"],"related_changes":[],"relations":[],"section":"流复制和恢复","section_path":["流复制和恢复"],"source_commits":["41c184bc6"],"source_entry_id":"13.0/changes/059","source_hash":"6ec200812b6ad4cec0918c3f9b747705f82eb5085ba0276a1d6f5ecde78d267f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.4","statement_hash":"265a9f63d0731f9c9381933d095869d8f52f32b13691b0e87d141379cf5a4db9","text":"允许在 WAL 引用无效页面时仍继续恢复（Fujii Masao）§ 可以使用ignore_invalid_pages启用此功能。","title":"允许在 WAL 引用无效页面时仍继续恢复","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["40d964ec9"],"commit_groups":[["40d964ec9"]],"commits":["40d964ec9"],"cves":[],"db_id":"cf5f1bf04f38474a35b23c6e8730f5be","html":"\u003cp\u003e允许 \u003ca href=\"/docs/13/sql-vacuum.html\" title=\"VACUUM\"\u003e\u003ccode\u003eVACUUM\u003c/code\u003e\u003c/a\u003e 并行处理一个表的各个索引（Masahiko Sawada，Amit Kapila）\u003ca href=\"https://postgr.es/c/40d964ec9\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e新增的 \u003ccode\u003ePARALLEL\u003c/code\u003e 选项控制此行为。\u003c/p\u003e","id":"13.0-d08d6af9ae56c8c0","identity_text":"Allow VACUUM to process a table's indexes in parallel (Masahiko Sawada, Amit Kapila) The new PARALLEL option controls this.","part":"changes","patch_ids":["81966cbd859a9b651705aeb1297d84c1"],"related_changes":[],"relations":[],"section":"工具命令","section_path":["工具命令"],"source_commits":["40d964ec9"],"source_entry_id":"13.0/changes/060","source_hash":"8c5fb4badc383f663abb314c7ba271e41d78b1b22fd2de2573df755dbbf42cad","source_url":"/docs/release/13.0/#id-1.11.6.29.5.5","statement_hash":"4d37e4010fd7be3258aa32e99e29420d020e5135bb87054534898c9cc560ee6e","text":"允许 VACUUM 并行处理一个表的各个索引（Masahiko Sawada，Amit Kapila）§ 新增的 PARALLEL 选项控制此行为。","title":"允许 VACUUM 并行处理一个表的各个索引","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["357889eb1"],"commit_groups":[["357889eb1"]],"commits":["357889eb1"],"cves":[],"db_id":"758167f947d41f691132c5a0b79c738d","html":"\u003cp\u003e允许 \u003ca href=\"/docs/13/sql-select.html#SQL-LIMIT\" title=\"LIMIT 子句\"\u003e\u003ccode\u003eFETCH FIRST\u003c/code\u003e\u003c/a\u003e 使用 \u003ccode\u003eWITH TIES\u003c/code\u003e 返回与最后一个结果行的排序值相同的所有额外行（Surafel Temesgen）\u003ca href=\"https://postgr.es/c/357889eb1\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-a539ec8b2160341b","identity_text":"Allow FETCH FIRST to use WITH TIES to return any additional rows that match the last result row (Surafel Temesgen)","part":"changes","patch_ids":["0722c634d85b79722461a3c3d7a52374"],"related_changes":[],"relations":[],"section":"工具命令","section_path":["工具命令"],"source_commits":["357889eb1"],"source_entry_id":"13.0/changes/061","source_hash":"0a5a209cdae566268f5bbc156e3545329214c9b3a0b713582c510e3cb63de91d","source_url":"/docs/release/13.0/#id-1.11.6.29.5.5","statement_hash":"1934d04ca961148f105c5943abc1e0270a1f7b0f501aac9cf3ed2b243bb81994","text":"允许 FETCH FIRST 使用 WITH TIES 返回与最后一个结果行的排序值相同的所有额外行（Surafel Temesgen）§","title":"允许 FETCH FIRST 使用 WITH TIES 返回与最后一个结果行的排序值相同的所有额外行","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["ce77abe63"],"commit_groups":[["ce77abe63"]],"commits":["ce77abe63"],"cves":[],"db_id":"8f07d9accb5991fa6400a4429b787491","html":"\u003cp\u003e在 \u003ca href=\"/docs/13/sql-explain.html\" title=\"EXPLAIN\"\u003e\u003ccode\u003eEXPLAIN\u003c/code\u003e\u003c/a\u003e 的 \u003ccode\u003eBUFFER\u003c/code\u003e 输出中报告规划期间的缓冲区使用情况（Julien Rouhaud）\u003ca href=\"https://postgr.es/c/ce77abe63\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-20615200860ee550","identity_text":"Report planning-time buffer usage in EXPLAIN's BUFFER output (Julien Rouhaud)","part":"changes","patch_ids":["600fc008248baef05e03a4746a9853fc"],"related_changes":[],"relations":[],"section":"工具命令","section_path":["工具命令"],"source_commits":["ce77abe63"],"source_entry_id":"13.0/changes/062","source_hash":"5f768b3880d7ce630ba8e0b2a592f0aacc75ac47f2903183b5375047004eaf7e","source_url":"/docs/release/13.0/#id-1.11.6.29.5.5","statement_hash":"fbc91931464891df07f845627e2b99ac0f0f34140fb6a72298704109e749abbe","text":"在 EXPLAIN 的 BUFFER 输出中报告规划期间的缓冲区使用情况（Julien Rouhaud）§","title":"在 EXPLAIN 的 BUFFER 输出中报告规划期间的缓冲区使用情况","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["cacef1722"],"commit_groups":[["cacef1722"]],"commits":["cacef1722"],"cves":[],"db_id":"2a1767e797337dae88fa6fb7fa257b84","html":"\u003cp\u003e使 \u003ca href=\"/docs/13/sql-createtable.html\" title=\"CREATE TABLE\"\u003e\u003ccode\u003eCREATE TABLE LIKE\u003c/code\u003e\u003c/a\u003e 将 \u003ccode\u003eCHECK\u003c/code\u003e 约束的 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anycompatiblerange.","part":"changes","patch_ids":["a3dd3189ba7ff8e07ae3ff005b7d6cc7"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["24e2885ee"],"source_entry_id":"13.0/changes/073","source_hash":"c1d763e333dfda8a0c60ed6522ce7c3dc18c5b2b1703726801f592a986f53e4f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"af5d83b8c8225114334db658c8c5c13c116f4eb0a5f86f38b31ba73626f365f8","text":"增加多态数据类型，供要求参数类型兼容的函数使用（Pavel Stehule）§ 新增数据类型为 anycompatible、anycompatiblearray、anycompatiblenonarray 和 anycompatiblerange。","title":"增加多态数据类型，供要求参数类型兼容的函数使用","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["aeec457de"],"commit_groups":[["aeec457de"]],"commits":["aeec457de"],"cves":[],"db_id":"8bcb81ac747ec3a08b5d7e1bdf941be5","html":"\u003cp\u003e增加 \u003cacronym\u003eSQL\u003c/acronym\u003e 数据类型 \u003ca href=\"/docs/13/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e\u003ccode\u003exid8\u003c/code\u003e\u003c/a\u003e，以对外提供 FullTransactionId（Thomas Munro）\u003ca href=\"https://postgr.es/c/aeec457de\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e现有的 \u003ccode\u003exid\u003c/code\u003e 数据类型只有四字节，因此不包含事务纪元。\u003c/p\u003e","id":"13.0-5e2a93d410688070","identity_text":"Add SQL data type xid8 to expose FullTransactionId (Thomas Munro) The existing xid data type is only four bytes so it does not provide the transaction epoch.","part":"changes","patch_ids":["3ed44926ceffd5acb458c665c96cfb58"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["aeec457de"],"source_entry_id":"13.0/changes/074","source_hash":"82c608dcdf5fc34ba9d216563d767d16c6edc048504a8d7e4499dc528a1e799d","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"64027723f5fa89f4f5e5f12b16a2b642bdf087678e2384a3fad89d01303b775c","text":"增加 SQL 数据类型 xid8，以对外提供 FullTransactionId（Thomas Munro）§ 现有的 xid 数据类型只有四字节，因此不包含事务纪元。","title":"增加 SQL 数据类型 xid8，以对外提供 FullTransactionId","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a2b1faa0f"],"commit_groups":[["a2b1faa0f"]],"commits":["a2b1faa0f"],"cves":[],"db_id":"786fbab9326af95a6ffa057a404afa63","html":"\u003cp\u003e增加数据类型 \u003ca href=\"/docs/13/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e\u003ccode\u003eregcollation\u003c/code\u003e\u003c/a\u003e 及相关函数，以表示排序规则对象的 OID（Julien Rouhaud）\u003ca href=\"https://postgr.es/c/a2b1faa0f\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-fa450aefcd873fbc","identity_text":"Add data type regcollation and associated functions, to represent OIDs of collation objects (Julien Rouhaud)","part":"changes","patch_ids":["1e693527b8710036799a22fb19a1d040"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["a2b1faa0f"],"source_entry_id":"13.0/changes/075","source_hash":"5b2cc84157350128aa7f9222af28d45ac011595be18d7e38d12f1a1a5cb2a43b","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"b35e86ad98c0bc664f7c87941e997b16e3fa017a74ae605959f73475311d394e","text":"增加数据类型 regcollation 及相关函数，以表示排序规则对象的 OID（Julien Rouhaud）§","title":"增加数据类型 regcollation 及相关函数，以表示排序规则对象的 OID","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d5ac14f9c"],"commit_groups":[["d5ac14f9c"]],"commits":["d5ac14f9c"],"cves":[],"db_id":"2112991b419924b3c9cce1c25a99b003","html":"\u003cp\u003e在某些情况下使用 glibc 版本作为\u003ca href=\"/docs/13/collation.html\" title=\"23.2. 排序规则支持\"\u003e排序规则\u003c/a\u003e版本标识符（Thomas Munro）\u003ca href=\"https://postgr.es/c/d5ac14f9c\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e如果 glibc 版本发生变化，将发出警告，提示依赖排序规则的索引可能损坏。\u003c/p\u003e","id":"13.0-055f88270bdfed97","identity_text":"Use the glibc version in some cases as a collation version identifier (Thomas Munro) If the glibc version changes, a warning will be issued about possible corruption of collation-dependent indexes.","part":"changes","patch_ids":["dd8938ae23058a0c2360546e02ccde5f"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["d5ac14f9c"],"source_entry_id":"13.0/changes/076","source_hash":"88fdf729ffed84b75085cc232b2b803d7fa7047bd499dd3d01c14c514f0c60e0","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"510169bca5deb6093d9d2446f57efad54e9e515e11f02d10feb2ff5aec787541","text":"在某些情况下使用 glibc 版本作为排序规则版本标识符（Thomas Munro）§ 如果 glibc 版本发生变化，将发出警告，提示依赖排序规则的索引可能损坏。","title":"在某些情况下使用 glibc 版本作为排序规则版本标识符","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["352f6f2df"],"commit_groups":[["352f6f2df"]],"commits":["352f6f2df"],"cves":[],"db_id":"5876645bd72a51f36c3b30f431806d2d","html":"\u003cp\u003e增加 Windows 上的排序规则版本支持（Thomas Munro）\u003ca href=\"https://postgr.es/c/352f6f2df\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-93a5b7a8fe2a314b","identity_text":"Add support for collation versions on Windows (Thomas Munro)","part":"changes","patch_ids":["579e9e0e30f65b8135af1391d8f77abc"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["352f6f2df"],"source_entry_id":"13.0/changes/077","source_hash":"f57ec1495bdec4185ecebbf0268db20021bb74709d940f241a3d6df45980796a","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"1010e98f9be3c000eaf6586981afde64f65de803b8e85baf09fce89610b8e53f","text":"增加 Windows 上的排序规则版本支持（Thomas Munro）§","title":"增加 Windows 上的排序规则版本支持","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["8b7a0f1d1"],"commit_groups":[["8b7a0f1d1"]],"commits":["8b7a0f1d1"],"cves":[],"db_id":"c16fc94742b9381b7ac5e9d38f9b71be","html":"\u003cp\u003e允许通过后缀记法提取 \u003ca href=\"/docs/13/sql-expressions.html#SQL-SYNTAX-ROW-CONSTRUCTORS\" title=\"4.2.13. 行构造器\"\u003e\u003ccode\u003eROW\u003c/code\u003e 表达式\u003c/a\u003e的成员（Tom Lane）\u003ca href=\"https://postgr.es/c/8b7a0f1d1\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e例如，\u003ccode\u003e(ROW(4, 5.0)).f1\u003c/code\u003e 现在返回 4。\u003c/p\u003e","id":"13.0-dbf1c697d2a7896a","identity_text":"Allow ROW expressions to have their members extracted with suffix notation (Tom Lane) For example, (ROW(4, 5.0)).f1 now returns 4.","part":"changes","patch_ids":["a1515ceb7b42bee5d2138e3ddb80d233"],"related_changes":[],"relations":[],"section":"数据类型","section_path":["数据类型"],"source_commits":["8b7a0f1d1"],"source_entry_id":"13.0/changes/078","source_hash":"6595d662e06b7c5b0625b727f98d1e5bb05e23c766826dafd68eba934a1e56cf","source_url":"/docs/release/13.0/#id-1.11.6.29.5.6","statement_hash":"f3d4a99d305c1a78f8e7e36f39034ef9edd55842943d8edc27f0c387f9e1b6a4","text":"允许通过后缀记法提取 ROW 表达式的成员（Tom Lane）§ 例如，(ROW(4, 5.0)).f1 现在返回 4。","title":"允许通过后缀记法提取 ROW 表达式的成员","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a83586b55"],"commit_groups":[["a83586b55"]],"commits":["a83586b55"],"cves":[],"db_id":"cdbc5e90b442ec91ae913a9dfdfffe8b","html":"\u003cp\u003e增加 \u003ca href=\"/docs/13/functions-json.html#FUNCTIONS-JSON-PROCESSING-TABLE\" title=\"表 9.47. JSON 处理函数\"\u003e\u003ccode\u003ejsonb_set()\u003c/code\u003e\u003c/a\u003e 的另一个版本，改进对 \u003ccode\u003eNULL\u003c/code\u003e 的处理（Andrew Dunstan）\u003ca href=\"https://postgr.es/c/a83586b55\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e新函数 \u003ccode\u003ejsonb_set_lax()\u003c/code\u003e 根据请求处理值为 \u003ccode\u003eNULL\u003c/code\u003e 的新值：将指定键设为 \u003cacronym\u003eJSON\u003c/acronym\u003e null、删除该键、抛出异常，或返回未经修改的 \u003ccode\u003ejsonb\u003c/code\u003e 值。\u003c/p\u003e","id":"13.0-76e04342d917b8d0","identity_text":"Add alternate version of jsonb_set() with improved NULL handling (Andrew Dunstan) The new function, jsonb_set_lax(), handles a NULL new value by either setting the specified key to a JSON null, deleting the key, raising an exception, or returning the jsonb value unmodified, as requested.","part":"changes","patch_ids":["58e0b5b2c5b897b7d2027af527b5a0f5"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["a83586b55"],"source_entry_id":"13.0/changes/079","source_hash":"72c325ed3e2e86370b11da881cec7b6ab24b3fba2ee077d661a2f39d199ad958","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"f56e469ec21f3adaf82d2c21e3c6108279187d9fec3584a9cf2e73a25afd7d4d","text":"增加 jsonb_set() 的另一个版本，改进对 NULL 的处理（Andrew Dunstan）§ 新函数 jsonb_set_lax() 根据请求处理值为 NULL 的新值：将指定键设为 JSON null、删除该键、抛出异常，或返回未经修改的 jsonb 值。","title":"增加 jsonb_set() 的另一个版本，改进对 NULL 的处理","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["bffe1bd68"],"commit_groups":[["bffe1bd68"]],"commits":["bffe1bd68"],"cves":[],"db_id":"5e422727306afe91a025582f308a050a","html":"\u003cp\u003e增加 jsonpath 的 \u003ca href=\"/docs/13/functions-json.html#FUNCTIONS-SQLJSON-PATH-OPERATORS\" title=\"9.16.2.2. SQL/JSON 路径操作符和方法\"\u003e.\u003ccode\u003edatetime()\u003c/code\u003e\u003c/a\u003e 方法（Nikita Glukhov，Teodor Sigaev，Oleg Bartunov，Alexander Korotkov）\u003ca href=\"https://postgr.es/c/bffe1bd68\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e此函数允许将 \u003cacronym\u003eJSON\u003c/acronym\u003e 值转换为时间戳，随后即可在 \u003ccode\u003ejsonpath\u003c/code\u003e 表达式中处理这些时间戳。此项修改还增加了支持时区感知输出的 \u003ccode\u003ejsonpath\u003c/code\u003e 函数。\u003c/p\u003e","id":"13.0-4773ae467c9f78f6","identity_text":"Add jsonpath .datetime() method (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander Korotkov) This function allows JSON values to be converted to timestamps, which can then be processed in jsonpath expressions. This change also adds jsonpath functions that support time-zone-aware output.","part":"changes","patch_ids":["02e7a8f2a8c7ce346b5f66c06ac30da9"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["bffe1bd68"],"source_entry_id":"13.0/changes/080","source_hash":"d77cde429eb5249d5d51d30d35a4e4ae79c2b7b864e3cc4d2fa56c90ed7f3777","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"0b1f4beb67a53bbfc2685867910c67502726623bb800b43de437d45721f45314","text":"增加 jsonpath 的 .datetime() 方法（Nikita Glukhov，Teodor Sigaev，Oleg Bartunov，Alexander Korotkov）§ 此函数允许将 JSON 值转换为时间戳，随后即可在 jsonpath 表达式中处理这些时间戳。此项修改还增加了支持时区感知输出的 jsonpath 函数。","title":"增加 jsonpath 的 .datetime() 方法","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["2991ac5fc"],"commit_groups":[["2991ac5fc"]],"commits":["2991ac5fc"],"cves":[],"db_id":"2255bf3ab839b8397e52e46de440ef10","html":"\u003cp\u003e增加 \u003cacronym\u003eSQL\u003c/acronym\u003e 函数 \u003ca href=\"/docs/13/functions-string.html#FUNCTIONS-STRING-SQL\" title=\"表 9.9. SQL字符串函数和操作符\"\u003e\u003ccode\u003eNORMALIZE\u003c/code\u003e()\u003c/a\u003e，以规范化 Unicode 字符串，并增加 \u003ca href=\"/docs/13/collation.html#COLLATION-NONDETERMINISTIC\" title=\"23.2.2.4. 非确定性排序规则\"\u003e\u003ccode\u003eIS NORMALIZED\u003c/code\u003e\u003c/a\u003e 来检查是否已规范化（Peter Eisentraut）\u003ca href=\"https://postgr.es/c/2991ac5fc\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-3e494e0449340424","identity_text":"Add SQL functions NORMALIZE() to normalize Unicode strings, and IS NORMALIZED to check for normalization (Peter Eisentraut)","part":"changes","patch_ids":["648c1d73755f5b8579052de3db99ae2e"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["2991ac5fc"],"source_entry_id":"13.0/changes/081","source_hash":"ba3c4fc1280dab787264e805009a1c421d273fce0e58c3fe262314592d862d5d","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"dd1f48d03beb9bfe796328d04fdadcb5a65079855509f043b8e380199d4f2211","text":"增加 SQL 函数 NORMALIZE()，以规范化 Unicode 字符串，并增加 IS NORMALIZED 来检查是否已规范化（Peter Eisentraut）§","title":"增加 SQL 函数 NORMALIZE()，以规范化 Unicode 字符串，并增加 IS NORMALIZED 来检查是否已规范化","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["313f87a17"],"commit_groups":[["313f87a17"]],"commits":["313f87a17"],"cves":[],"db_id":"8275cf4baee9025dd4071968c61fa1a3","html":"\u003cp\u003e为 \u003ca href=\"/docs/13/datatype-pg-lsn.html\" title=\"8.20. pg_lsn 类型\"\u003e\u003ccode\u003epg_lsn\u003c/code\u003e\u003c/a\u003e 增加 \u003ccode\u003emin()\u003c/code\u003e 和 \u003ccode\u003emax()\u003c/code\u003e 聚合（Fabrízio de Royes Mello）\u003ca href=\"https://postgr.es/c/313f87a17\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些聚合在监控查询中特别有用。\u003c/p\u003e","id":"13.0-90b0801a54d29e00","identity_text":"Add min() and max() aggregates for pg_lsn (Fabrízio de Royes Mello) These are particularly useful in monitoring queries.","part":"changes","patch_ids":["1e0bf1ac81a6ea2abc9254b35d3ba621"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["313f87a17"],"source_entry_id":"13.0/changes/082","source_hash":"0db90e1d5d7f0c0d3ac48485aea537c933467addc708dcb35625ef7da45424b0","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"06932c69ae6af7967400d799d342082fcbd48cdb2c584041e9e473e7624d7aa1","text":"为 pg_lsn 增加 min() 和 max() 聚合（Fabrízio de Royes Mello）§ 这些聚合在监控查询中特别有用。","title":"为 pg_lsn 增加 min() 和 max() 聚合","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["a6525588b"],"commit_groups":[["a6525588b"]],"commits":["a6525588b"],"cves":[],"db_id":"282403394cfc6fd7dc464eb42353d0ad","html":"\u003cp\u003e允许\u003ca href=\"/docs/13/sql-syntax.html#SQL-SYNTAX-STRINGS-UESCAPE\" title=\"4.1.2.3. 带有 Unicode 转义的字符串常量\"\u003eUnicode 转义\u003c/a\u003e，例如 \u003ccode\u003eE'\\u\u003cem\u003e\u003ccode\u003ennnn\u003c/code\u003e\u003c/em\u003e'\u003c/code\u003e 或 \u003ccode\u003eU\u0026amp;'\\\u003cem\u003e\u003ccode\u003ennnn\u003c/code\u003e\u003c/em\u003e'\u003c/code\u003e，指定数据库编码中可用的任何字符，即使数据库编码不是 \u003cacronym\u003eUTF\u003c/acronym\u003e-8（Tom Lane）\u003ca href=\"https://postgr.es/c/a6525588b\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-f4d4dc34e5a3ad8a","identity_text":"Allow Unicode escapes, e.g., E'\\unnnn' or U\u0026'\\nnnn', to specify any character available in the database encoding, even when the database encoding is not UTF-8 (Tom Lane)","part":"changes","patch_ids":["d253b738a0be3e73ddc9e130347e9da0"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["a6525588b"],"source_entry_id":"13.0/changes/083","source_hash":"78c51e482847e1cbae2906a81f36ee8ed065babc31cd17894165e0481f28cd8e","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"e4872c6d02098a8e67976907b7622a9bd3a05c4d730a060c07e6cf22e721d56c","text":"允许Unicode 转义，例如 E'\\unnnn' 或 U\u0026'\\nnnn'，指定数据库编码中可用的任何字符，即使数据库编码不是 UTF-8（Tom Lane）§","title":"允许Unicode 转义，例如 E'\\unnnn' 或 U\u0026'\\nnnn'，指定数据库编码中可用的任何字符，即使数据库编码不是 UTF-8","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d67755049"],"commit_groups":[["d67755049"]],"commits":["d67755049"],"cves":[],"db_id":"a5b65c37623bf85f4d3b73e83cad2c7d","html":"\u003cp\u003e允许 \u003ca href=\"/docs/13/functions-formatting.html\" title=\"9.8. 数据类型格式化函数\"\u003e\u003ccode\u003eto_date()\u003c/code\u003e\u003c/a\u003e 和 \u003ccode\u003eto_timestamp()\u003c/code\u003e 识别非英语的月份名和星期名（Juan José Santamaría Flecha，Tom Lane）\u003ca href=\"https://postgr.es/c/d67755049\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e可识别的名称与 \u003ca href=\"/docs/13/functions-formatting.html\" title=\"9.8. 数据类型格式化函数\"\u003e\u003ccode\u003eto_char()\u003c/code\u003e\u003c/a\u003e 使用相同格式模式输出的名称相同。\u003c/p\u003e","id":"13.0-1ddc6186d17373d2","identity_text":"Allow to_date() and to_timestamp() to recognize non-English month/day names (Juan José Santamaría Flecha, Tom Lane) The names recognized are the same as those output by to_char() with the same format patterns.","part":"changes","patch_ids":["3f18056cd37a6e0636f54a68e4d70d4f"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["d67755049"],"source_entry_id":"13.0/changes/084","source_hash":"fbb938c212b23a464eeb753b76ea29fb903ba3281ae071d3e17089048c5ed5d0","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"842e3b3c0d66e85d98e8419bd896ee5d69ddcffe92cd02c3b1fe6f57b49aafef","text":"允许 to_date() 和 to_timestamp() 识别非英语的月份名和星期名（Juan José Santamaría Flecha，Tom Lane）§ 可识别的名称与 to_char() 使用相同格式模式输出的名称相同。","title":"允许 to_date() 和 to_timestamp() 识别非英语的月份名和星期名","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["d589f9446"],"commit_groups":[["d589f9446"]],"commits":["d589f9446"],"cves":[],"db_id":"f0e375cec237a7426a4f4bc68932a63c","html":"\u003cp\u003e增加日期时间格式模式 \u003ccode\u003eFF1\u003c/code\u003e – \u003ccode\u003eFF6\u003c/code\u003e，以指定输入或输出 1 到 6 位小数秒（Alexander Korotkov，Nikita Glukhov，Teodor Sigaev，Oleg Bartunov）\u003ca href=\"https://postgr.es/c/d589f9446\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这些模式可用于 \u003ccode\u003eto_char()\u003c/code\u003e、\u003ccode\u003eto_timestamp()\u003c/code\u003e 和 jsonpath 的 .\u003ccode\u003edatetime()\u003c/code\u003e。\u003c/p\u003e","id":"13.0-dcc0d72a1f1a27ed","identity_text":"Add datetime format patterns FF1 – FF6 to specify input or output of 1 to 6 fractional-second digits (Alexander Korotkov, Nikita Glukhov, Teodor Sigaev, Oleg Bartunov) These patterns can be used by to_char(), to_timestamp(), and jsonpath's 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Rasheed)","part":"changes","patch_ids":["520dedfae89bc7aa77ce47084fa941bd","d41bfcd3f739e399d8493c36d6cdcce4"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["4083f445c","43a899f41"],"source_entry_id":"13.0/changes/089","source_hash":"27c2c92d512421e9e759633e8c701c7620a19be5052557aea076bd8af58267b4","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"c66e16dd283eca550790707b19e97bf87862ccca9af80c1d32db9e51fc4e1139","text":"提高 numeric 类型的平方根（sqrt）和自然对数（ln）函数的性能与精度（Dean Rasheed）§ §","title":"提高 numeric 类型的平方根（sqrt）和自然对数（ln）函数的性能与精度","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["20d6225d1"],"commit_groups":[["20d6225d1"]],"commits":["20d6225d1"],"cves":[],"db_id":"8ae062c3a2e5e881e047434684aaa7b1","html":"\u003cp\u003e增加函数 \u003ca href=\"/docs/13/functions-math.html#FUNCTIONS-MATH-FUNC-TABLE\" 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版本（Thomas Munro）\u003ca href=\"https://postgr.es/c/4c04be9b0\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e为保持向后兼容，基于 \u003ccode\u003exid\u003c/code\u003e 的旧函数仍然存在。\u003c/p\u003e","id":"13.0-8ae888d9d582cfbf","identity_text":"Create xid8 versions of all transaction ID functions (Thomas Munro) The old xid-based functions still exist, for backward compatibility.","part":"changes","patch_ids":["a31e6118b79de11fa4a983d7620f226b"],"related_changes":[],"relations":[],"section":"函数","section_path":["函数"],"source_commits":["4c04be9b0"],"source_entry_id":"13.0/changes/093","source_hash":"407390411b04ad56cd01bdf9f6b3baaae31c82bc2b118a63fa37f6ec9c27413f","source_url":"/docs/release/13.0/#id-1.11.6.29.5.7","statement_hash":"590800e408d7f5d0ecac3a9835fe2bb60c4b29adb7404f13f246ab69269013e5","text":"为所有事务 ID 函数创建 xid8 版本（Thomas Munro）§ 为保持向后兼容，基于 xid 的旧函数仍然存在。","title":"为所有事务 ID 函数创建 xid8 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href=\"https://postgr.es/c/dbc60c559\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e新工具\u003ca href=\"/docs/13/app-pgverifybackup.html\" title=\"pg_verifybackup\"\u003e\u003cspan\u003epg_verifybackup\u003c/span\u003e\u003c/a\u003e可以验证备份。\u003c/p\u003e","id":"13.0-b72a95e0bc64c8ee","identity_text":"Generate backup manifests for base backups, and verify them (Robert Haas) A new tool pg_verifybackup can verify backups.","part":"changes","patch_ids":["6da64c4453212bb182dc8e0e28205bb5","ea2237512a068d9c4709b84e1e7070f7"],"related_changes":[],"relations":[],"section":"服务器应用程序","section_path":["服务器应用程序"],"source_commits":["0d8c9c121","dbc60c559"],"source_entry_id":"13.0/changes/117","source_hash":"ca9a227f3c0a1556f0aa8bbb6b000c3259ec72fadc756887d5790edd6bce5ad2","source_url":"/docs/release/13.0/#id-1.11.6.29.5.11","statement_hash":"7519c80336ab84aae7decbeed5a137d95c7bc7cfb62ba3410c6a0334b6455b25","text":"为基础备份生成备份清单，并验证备份（Robert Haas）§ § 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total backup size by default (Fujii Masao) This computation allows pg_stat_progress_basebackup to show progress. 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href=\"/docs/13/app-pgrewind.html\" title=\"pg_rewind\"\u003e\u003cspan\u003epg_rewind\u003c/span\u003e\u003c/a\u003e增加配置备库的选项（Paul Guo，Jimmy Yih，Ashwin Agrawal）\u003ca href=\"https://postgr.es/c/927474ce1\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e这与\u003ca href=\"/docs/13/app-pgbasebackup.html\" title=\"pg_basebackup\"\u003e\u003cspan\u003epg_basebackup\u003c/span\u003e\u003c/a\u003e的 \u003ccode\u003e--write-recovery-conf\u003c/code\u003e 选项一致。\u003c/p\u003e","id":"13.0-54e6b80d4fd68754","identity_text":"Add an option to pg_rewind to configure standbys (Paul Guo, Jimmy Yih, Ashwin Agrawal) This matches pg_basebackup's --write-recovery-conf 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href=\"https://postgr.es/c/5adafaf17\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e可以使用 \u003ccode\u003e--no-ensure-shutdown\u003c/code\u003e 禁用此行为。\u003c/p\u003e","id":"13.0-c6683ca58d1b56de","identity_text":"Have pg_rewind automatically run crash recovery before rewinding (Paul Guo, Jimmy Yih, Ashwin Agrawal) This can be disabled by using --no-ensure-shutdown.","part":"changes","patch_ids":["3a523b3840ffe707968392837128382a"],"related_changes":[],"relations":[],"section":"服务器应用程序","section_path":["服务器应用程序"],"source_commits":["5adafaf17"],"source_entry_id":"13.0/changes/121","source_hash":"71b9a404240829f8560b920a9773ddfcc6acc3f2e620f1fb3d5761adb600e1af","source_url":"/docs/release/13.0/#id-1.11.6.29.5.11","statement_hash":"2a4c06dd3ba6915a041477d95d7d784d3c07ed77277ab568119cea19ff355706","text":"使 pg_rewind 在回退之前自动运行崩溃恢复（Paul Guo，Jimmy Yih，Ashwin Agrawal）§ 可以使用 --no-ensure-shutdown 禁用此行为。","title":"使 pg_rewind 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href=\"https://postgr.es/c/55ea10918\"\u003e§\u003c/a\u003e\u003c/p\u003e","id":"13.0-60aa1b2b38a37e5d","identity_text":"Add headerscheck script to test C header-file compatibility (Tom Lane)","part":"changes","patch_ids":["2970515369d62c50cf4e330944de60ff"],"related_changes":[],"relations":[],"section":"源代码","section_path":["源代码"],"source_commits":["55ea10918"],"source_entry_id":"13.0/changes/148","source_hash":"7cbd2d1d29506fa01124bf69fe30107f7128542773bd5d8822b36ca140e214a5","source_url":"/docs/release/13.0/#id-1.11.6.29.5.13","statement_hash":"6b0443a9b008d56dc17e11c7ddf2a344b342c05f3f8470c27bf04b8d9796d70a","text":"增加 headerscheck 脚本以测试 C 头文件的兼容性（Tom Lane）§","title":"增加 headerscheck 脚本以测试 C 头文件的兼容性","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["1cff1b95a"],"commit_groups":[["1cff1b95a"]],"commits":["1cff1b95a"],"cves":[],"db_id":"6c0132cf968ad5627ce8cd83f77457a0","html":"\u003cp\u003e将内部列表实现为数组，而不再采用单元链表（Tom 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这提高了访问大量对象的查询的性能。","title":"将内部列表实现为数组，而不再采用单元链表","variants":[],"version":"13.0"},{"also_in":[],"category":"feature","category_label":"Features","commit_aliases":["70eca6a9a","92fe6895d"],"commit_groups":[["70eca6a9a"],["92fe6895d"]],"commits":["70eca6a9a","92fe6895d"],"cves":[],"db_id":"0064c983de34fa708629d862de1c76c8","html":"\u003cp\u003e修改 \u003ccode\u003eTS_execute()\u003c/code\u003e 的 API（Tom Lane，Pavel Borisov）\u003ca href=\"https://postgr.es/c/92fe6895d\"\u003e§\u003c/a\u003e \u003ca href=\"https://postgr.es/c/70eca6a9a\"\u003e§\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eTS_execute\u003c/code\u003e 回调现在必须提供三值（是、否、可能）逻辑。现在默认准确计算 NOT 查询。\u003c/p\u003e","id":"13.0-d438a0e2943979f6","identity_text":"Change the API for TS_execute() (Tom Lane, Pavel Borisov) TS_execute callbacks must now provide ternary (yes/no/maybe) logic. 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