{"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","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"],"signature":"current_setting ( setting_name text [, missing_ok boolean ] ) → text","signature_count":1,"slug":"current-setting","source_rev":"b7bd9cda","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":"b7bd9cda","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":"","description_zh_html":"","doc":{"anchor":"FUNCTIONS-ADMIN-SET-TABLE","file":"functions-admin.html","slug":"18"},"group":"admin","group_label":"System Administration Functions","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":"","description_zh_html":"","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":""}],"zh_from":""},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-ADMIN-SET-TABLE","file":"functions-admin.html","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"current-setting","SourceDatabase":"pgweb","Version":"18","Locale":"zh-Hans","Title":"current_setting","Summary":"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。","BodyHTML":"返回设置\u003cem\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e的当前值。如果没有这样的设置，\u003ccode\u003ecurrent_setting\u003c/code\u003e将抛出一个错误，除非\u003cem\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e被提供并且为\u003ccode\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\" rel=\"nofollow\"\u003e\u003cspan\u003eSHOW\u003c/span\u003e\u003c/a\u003e。\u003cpre\u003ecurrent_setting ( setting_name text [, missing_ok boolean ] ) → text\u003c/pre\u003e返回设置\u003cem\u003e\u003ccode\u003esetting_name\u003c/code\u003e\u003c/em\u003e的当前值。如果没有这样的设置，\u003ccode\u003ecurrent_setting\u003c/code\u003e将抛出一个错误，除非\u003cem\u003e\u003ccode\u003emissing_ok\u003c/code\u003e\u003c/em\u003e被提供并且为\u003ccode\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\" rel=\"nofollow\"\u003e\u003cspan\u003eSHOW\u003c/span\u003e\u003c/a\u003e。","SourceRevision":"1b5ca64c","ContentHash":"e8aa3078a6ca35db0d69cec86657d37b20a34efa949f57083e95d360048264fd","Payload":{"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。","signatures":[{"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。","returns":"text","text":"current_setting ( setting_name text [, missing_ok boolean ] ) → text","zh_from":"doc"}],"zh_from":"doc"}},"RequestedLocale":"zh-Hans","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":"159d2a2111f39cf66e8df6dcbe144c58d28a79dfa49e42f025a9b2c3940a28c5","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":"","description_zh_html":"","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":""}}],"Spellings":null,"SQLState":null,"Evidence":null}