{"Entry":{"collection":"func","key":"pg-try-advisory-lock","name":"pg_try_advisory_lock","aliases":[],"metadata":{"changed_in":[],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"8.1","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"8.2"},{"descriptions_changed":true,"doc_overhaul":false,"from":"9.0","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"9.1"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"39fccc08747f95b4f728c5af0aa4e596165bf00df88b58ad58491879499b17ae","derived_content_hash":"7accfc6cbb6a9bea8d4db9f0bfb26a51d7b52bf725238b5dffdcdb9406c976df","documentation_refresh":{"batch":"20261113","original_source_rev":"wiki-repair-20261023:7ab7cd2d5cb2850099856989e09f869cdb4223b0241d52a4618140f583b225b6","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"first_version":"8.2","group":"admin","group_label":"System Administration Functions","groups":["admin"],"imported_at":"2026-09-27T17:57:29.693283+08:00","last_version":"20","name":"pg_try_advisory_lock","name_key":"pg_try_advisory_lock","position":29109,"present_in":["8.2","8.3","8.4","9.0","9.1","9.2","9.3","9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19","20"],"repair_provenance":{"original_source_revision":"wiki-repair-20261023:2b44fe1f0670a5e9730bead69011259eec4d679028f4e273f7f1836c736d132c","receipt_sha256":"1f0160b45599f35cfcaa42288a99fcc3612fef6d23d74b94804bac775b74c0ff","repair":"wiki-repair-20261023"},"signature":"pg_try_advisory_lock ( key bigint ) → boolean","signature_count":2,"slug":"pg-try-advisory-lock","source_rev":"wiki-repair-20261023:7ab7cd2d5cb2850099856989e09f869cdb4223b0241d52a4618140f583b225b6","summary":"Obtains an exclusive session-level advisory lock if available.","summary_zh":""}},"Definition":{"Collection":"func","Key":"pg-try-advisory-lock","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"pg-try-advisory-lock","SourceRevision":"wiki-repair-20261023:7ab7cd2d5cb2850099856989e09f869cdb4223b0241d52a4618140f583b225b6","Facts":{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","doc":{"anchor":"FUNCTIONS-ADVISORY-LOCKS-TABLE","file":"functions-admin.html","sha256":"885561d57facd49c33b44a50e320a002197d700d118784cc87d6410efadbd1f6","slug":"18"},"documentation_revision":{"inputs":[{"file":"functions-admin.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"885561d57facd49c33b44a50e320a002197d700d118784cc87d6410efadbd1f6","version":"18.7"},{"file":"functions-admin.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"830e894d29fec30b7c350c915fcaed4a63b24d57f2c96150bf25fa07fb43849c","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"group":"admin","group_label":"系统管理函数","lang":"en","layout":"table-new","pages":["functions-admin.html"],"prose_only":false,"signatures":[{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003ebigint\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key bigint ) → boolean","zh_from":"same-version-manual"},{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey1\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey2\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key1 integer, key2 integer ) → boolean","zh_from":"same-version-manual"}],"translation_provenance":{"inputs":[{"kind":"current-pgdoc-translation","path":"/Users/vonng/pgsty/pgdoc/zh/18/html/functions-admin.html","sha256":"b4fab9daceb7883fd75b32b6eb5398f2bbbfbbed5c83d1b2bf99cc8d842cdaf7"}],"kind":"same-version-pgdoc","locale":"zh-Hans","source_revision":"b1b500221dbe5437cfca004d6b04d3f6e422765d","version":"18"},"zh_from":"same-version-manual"},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-ADVISORY-LOCKS-TABLE","file":"functions-admin.html","sha256":"885561d57facd49c33b44a50e320a002197d700d118784cc87d6410efadbd1f6","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"pg-try-advisory-lock","SourceDatabase":"center","Version":"18","Locale":"en","Title":"pg_try_advisory_lock","Summary":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","BodyHTML":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode\u003etrue\u003c/code\u003e, or return \u003ccode\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","SourceRevision":"wiki-repair-20261023:7ab7cd2d5cb2850099856989e09f869cdb4223b0241d52a4618140f583b225b6","ContentHash":"75f8760b8e073cd72bc0eff241e9d1dc1b0a1f5fb657f4d237403a088c038676","Payload":{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","signatures":[{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003ebigint\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key bigint ) → boolean","zh_from":"same-version-manual"},{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey1\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey2\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key1 integer, key2 integer ) → boolean","zh_from":"same-version-manual"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","8.2","8.3","8.4","9.0","9.1","9.2","9.3","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"0d86e986a54dd754fa142f8b3ddf570003c87b3484fc0b9ea0c0a92b0ce54595","Text":"pg_try_advisory_lock ( key bigint ) → boolean","Returns":"boolean","Payload":{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003ebigint\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key bigint ) → boolean","zh_from":"same-version-manual"}},{"Version":"18","Ordinal":1,"Hash":"26a954bab2c95d46198c80718d2d3fac42fbeaf49f1e909c34970f3eb366ad87","Text":"pg_try_advisory_lock ( key1 integer, key2 integer ) → boolean","Returns":"boolean","Payload":{"description":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return true, or return false without waiting if the lock cannot be acquired immediately.","description_html":"Obtains an exclusive session-level advisory lock if available. This will either obtain the lock immediately and return \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e, or return \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e without waiting if the lock cannot be acquired immediately.","description_zh":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 true；否则立即返回 false，而不等待。","description_zh_html":"尝试获取一个排他的会话级咨询锁。如果能立即获取到锁，就返回 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e；否则立即返回 \u003ccode class=\"literal\"\u003efalse\u003c/code\u003e，而不等待。","examples":[],"html":"\u003ccode class=\"function\"\u003epg_try_advisory_lock\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey1\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ekey2\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eboolean\u003c/code\u003e","returns":"boolean","text":"pg_try_advisory_lock ( key1 integer, key2 integer ) → boolean","zh_from":"same-version-manual"}}],"Spellings":null,"SQLState":null,"Evidence":null}