{"Entry":{"collection":"func","key":"current-setting","name":"current_setting","aliases":[],"metadata":{"changed_in":["9.6"],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"7.2","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"7.3"},{"descriptions_changed":true,"doc_overhaul":false,"from":"7.3","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"7.4"},{"descriptions_changed":false,"doc_overhaul":false,"from":"7.4","group_changed":{"from":"misc","to":"admin"},"signatures":{"added":[],"removed":[]},"status":"changed","to":"8.0"},{"descriptions_changed":true,"doc_overhaul":false,"from":"8.3","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"8.4"},{"descriptions_changed":false,"doc_overhaul":false,"from":"9.5","group_changed":null,"signatures":{"added":["current_setting ( setting_name [, missing_ok ] ) → text"],"removed":["current_setting ( setting_name ) → text"]},"status":"changed","to":"9.6"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"c122c0bf2222dfc8163bf70d0cfb3729e407d1bd0ab3efccf828dbb939cc0a17","derived_content_hash":"1fad4cfa153ad2503f5fc0383b4dda1ca74450592822f7d90afd09e4a094030c","documentation_refresh":{"batch":"20261113","original_source_rev":"wiki-repair-20261023:6179d175b57ec0fcbf11adccdfe8aaa9fa36727eedb546f1749e46ef4af350b3","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"first_version":"7.3","group":"admin","group_label":"System Administration Functions","groups":["misc","admin"],"imported_at":"2026-09-27T17:57:29.416813+08:00","last_version":"20","name":"current_setting","name_key":"current_setting","position":29003,"present_in":["7.3","7.4","8.0","8.1","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-20261023:5146549a81cb31588bd220b4b6de12bb6ecc683404804664e27b40d08719540c","receipt_sha256":"eeefb674751aff268513e209e7a33149ffa622c5e9835eb6cce37d4377dbf2d1","repair":"wiki-repair-20261023"},"signature":"current_setting ( setting_name text [, missing_ok boolean ] ) → text","signature_count":1,"slug":"current-setting","source_rev":"wiki-repair-20261023:6179d175b57ec0fcbf11adccdfe8aaa9fa36727eedb546f1749e46ef4af350b3","summary":"Returns the current value of the setting setting_name.","summary_zh":""}},"Definition":{"Collection":"func","Key":"current-setting","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"current-setting","SourceRevision":"wiki-repair-20261023:6179d175b57ec0fcbf11adccdfe8aaa9fa36727eedb546f1749e46ef4af350b3","Facts":{"description":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","description_html":"Returns the current value of the setting \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","description_zh":"返回设置 setting_name 的当前值。如果没有这样的设置，current_setting 将抛出一个错误，除非 missing_ok 被提供并且为 true（在此情况下返回 NULL）。这个函数对应于 SQL 命令 SHOW。","description_zh_html":"返回设置 \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e 的当前值。如果没有这样的设置，\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e 将抛出一个错误，除非 \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e 被提供并且为 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e（在此情况下返回 NULL）。这个函数对应于 SQL 命令 \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e。","doc":{"anchor":"FUNCTIONS-ADMIN-SET-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":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","description_html":"Returns the current value of the setting \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","description_zh":"返回设置 setting_name 的当前值。如果没有这样的设置，current_setting 将抛出一个错误，除非 missing_ok 被提供并且为 true（在此情况下返回 NULL）。这个函数对应于 SQL 命令 SHOW。","description_zh_html":"返回设置 \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e 的当前值。如果没有这样的设置，\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e 将抛出一个错误，除非 \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e 被提供并且为 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e（在此情况下返回 NULL）。这个函数对应于 SQL 命令 \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e。","examples":[{"expr":"current_setting('datestyle')","result":"ISO, MDY"}],"html":"\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eboolean\u003c/code\u003e\u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"current_setting ( setting_name text [, missing_ok boolean] ) → text","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-ADMIN-SET-TABLE","file":"functions-admin.html","sha256":"885561d57facd49c33b44a50e320a002197d700d118784cc87d6410efadbd1f6","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"current-setting","SourceDatabase":"center","Version":"18","Locale":"en","Title":"current_setting","Summary":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","BodyHTML":"Returns the current value of the setting \u003cem\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\" rel=\"nofollow\"\u003e\u003cspan\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","SourceRevision":"wiki-repair-20261023:6179d175b57ec0fcbf11adccdfe8aaa9fa36727eedb546f1749e46ef4af350b3","ContentHash":"41ae073121bd408f7b43d3b54971e2e2325e14f8843346683de7f2df51b5d0d3","Payload":{"description":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","description_html":"Returns the current value of the setting \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","signatures":[{"description":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","description_html":"Returns the current value of the setting \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","description_zh":"返回设置 setting_name 的当前值。如果没有这样的设置，current_setting 将抛出一个错误，除非 missing_ok 被提供并且为 true（在此情况下返回 NULL）。这个函数对应于 SQL 命令 SHOW。","description_zh_html":"返回设置 \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e 的当前值。如果没有这样的设置，\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e 将抛出一个错误，除非 \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e 被提供并且为 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e（在此情况下返回 NULL）。这个函数对应于 SQL 命令 \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e。","examples":[{"expr":"current_setting('datestyle')","result":"ISO, MDY"}],"html":"\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eboolean\u003c/code\u003e\u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"current_setting ( setting_name text [, missing_ok boolean] ) → text","zh_from":"same-version-manual"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","7.3","7.4","8.0","8.1","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":"19a36914323f53de966278e28718798f3cd809bc5dd3a301e5f9ac9c72687f03","Text":"current_setting ( setting_name text [, missing_ok boolean] ) → text","Returns":"text","Payload":{"description":"Returns the current value of the setting setting_name. If there is no such setting, current_setting throws an error unless missing_ok is supplied and is true (in which case NULL is returned). This function corresponds to the SQL command SHOW.","description_html":"Returns the current value of the setting \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e. If there is no such setting, \u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e throws an error unless \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e is supplied and is \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e (in which case NULL is returned). This function corresponds to the SQL command \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e.","description_zh":"返回设置 setting_name 的当前值。如果没有这样的设置，current_setting 将抛出一个错误，除非 missing_ok 被提供并且为 true（在此情况下返回 NULL）。这个函数对应于 SQL 命令 SHOW。","description_zh_html":"返回设置 \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e 的当前值。如果没有这样的设置，\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e 将抛出一个错误，除非 \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e 被提供并且为 \u003ccode class=\"literal\"\u003etrue\u003c/code\u003e（在此情况下返回 NULL）。这个函数对应于 SQL 命令 \u003ca href=\"/docs/18/sql-show.html\" title=\"SHOW\"\u003e\u003cspan class=\"refentrytitle\"\u003eSHOW\u003c/span\u003e\u003c/a\u003e。","examples":[{"expr":"current_setting('datestyle')","result":"ISO, MDY"}],"html":"\u003ccode class=\"function\"\u003ecurrent_setting\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eboolean\u003c/code\u003e\u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"current_setting ( setting_name text [, missing_ok boolean] ) → text","zh_from":"same-version-manual"}}],"Spellings":null,"SQLState":null,"Evidence":null}