{"Entry":{"collection":"psql","key":"cmd-75-6e-73-65-74","name":"\\unset","aliases":["\\unset"],"metadata":{"aliases":["\\unset"],"category":"Scripting and assistance","content_hash":"cd73d388793437c3a415908e62f06012d58d5296c1cdac73e04382b7f3e708ce","derived_content_hash":"b618ffa915baf8314bd5eda37af99f9955a64608ce7a74fd0ae67a4363e7f912","documentation_refresh":{"batch":"20261113","original_source_rev":"","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"imported_at":"2026-09-30T00:40:45.221182+08:00","name":"\\unset","name_zh":"","slug":"cmd-75-6e-73-65-74","summary":"Unsets (deletes) the psql variable name ."}},"Definition":{"Collection":"psql","Key":"cmd-75-6e-73-65-74","SourceDatabase":"center","Version":"18","SourceTable":"psql_command","SourceKey":"cmd-75-6e-73-65-74","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","Facts":{"command":"\\unset","comparison_data":{"definition":"Unsets (deletes) the psql variable name . 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See Variables below.","modifiers":[],"signature":"\\unset name","spellings":["\\unset"]},"comparison_hash":"451002e988b2f03fa8361c0da32a8624256d2254af4aab4e6592c44b476aeeb1","description":["Unsets (deletes) the psql variable name ."],"description_zh":"取消设置（删除） psql 变量 name 。","description_zh_html":"\u003cdd\u003e\u003cp\u003e取消设置（删除）\u003cspan class=\"application\"\u003epsql\u003c/span\u003e 变量 \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e。\u003c/p\u003e\u003cp\u003e大多数控制 \u003cspan class=\"application\"\u003epsql\u003c/span\u003e 行为的变量不能取消设置；对于这些变量，\u003ccode class=\"literal\"\u003e\\unset\u003c/code\u003e 命令会被解释为将其设置为默认值。参见下面的\u003ca class=\"xref\" href=\"/zh/docs/18/app-psql.html#APP-PSQL-VARIABLES\" title=\"变量\"\u003e变量\u003c/a\u003e。\u003c/p\u003e\u003c/dd\u003e","documentation_revision":{"inputs":[{"file":"app-psql.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","version":"18.7"},{"file":"app-psql.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"cb475c53a16d9e06358f5e6c9c5649645db92568cfd319f230c62c9f57ae090b","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"facts":[{"label":"Client","value":"psql 18.7"},{"label":"Case-sensitive spelling","value":"\\unset"}],"facts_zh":[{"label":"客户端","value":"psql 18.7"},{"label":"区分大小写的写法","value":"\\unset"}],"localization":{"documentation_release":"18.7","language":"en","source_language":"en","source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552","status":"same-version-reviewed-manual"},"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-UNSET\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\unset \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Unsets (deletes) the \u003cspan class=\"application\"\u003epsql\u003c/span\u003e variable \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e.\n        \u003c/p\u003e\u003cp\u003e\n        Most variables that control \u003cspan class=\"application\"\u003epsql\u003c/span\u003e's behavior\n        cannot be unset; instead, an \u003ccode class=\"literal\"\u003e\\unset\u003c/code\u003e command is interpreted\n        as setting them to their default values.\n        See \u003ca class=\"xref\" href=\"/docs/18/app-psql.html#APP-PSQL-VARIABLES\" title=\"Variables\"\u003eVariables\u003c/a\u003e below.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","manual_path":"app-psql.html#APP-PSQL-META-COMMAND-UNSET","modifiers":[],"related":[{"label":"psql command-line options and complete manual","url":"/wiki/tool/psql/?v=18"}],"related_zh":[{"label":"psql 命令行选项及完整手册","url":"/wiki/tool/psql/?v=18"}],"release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.7","major":"18","manifest":{"major":"18","release":"18.7","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd","source_url":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2"},"ref":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2","revision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"},"sections":[],"sections_zh":[],"signature":"\\unset name","sources":[{"anchor":"APP-PSQL-META-COMMAND-UNSET","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-UNSET"}],"spellings":["\\unset"],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\unset","url":"/wiki/psql/cmd-75-6e-73-65-74/?v=18"},"modifiers":"None listed in this signature"}],"title":"Spellings in this manual definition"}],"tables_zh":[{"columns":[{"key":"command","label":"命令"},{"key":"modifiers","label":"手册中的后缀修饰符"}],"key":"spellings","rows":[{"command":{"text":"\\unset","url":"/wiki/psql/cmd-75-6e-73-65-74/?v=18"},"modifiers":"此语法签名未列出"}],"title":"本版手册中的写法"}],"zh_from":"same-version-manual"},"ManualEvidence":{"manual_path":"app-psql.html#APP-PSQL-META-COMMAND-UNSET","release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.7","major":"18","manifest":{"major":"18","release":"18.7","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd","source_url":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2"},"ref":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2","revision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"},"sources":[{"anchor":"APP-PSQL-META-COMMAND-UNSET","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-UNSET"}]},"MeasuredEvidence":{}},"Text":{"Collection":"psql","Key":"cmd-75-6e-73-65-74","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\\unset","Summary":"Unsets (deletes) the psql variable name .","BodyHTML":"\u003cdiv\u003e\u003cdl\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-UNSET\"\u003e\u003cspan\u003e\u003ccode\u003e\\unset \u003cem\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Unsets (deletes) the \u003cspan\u003epsql\u003c/span\u003e variable \u003cem\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e.\n        \u003c/p\u003e\u003cp\u003e\n        Most variables that control \u003cspan\u003epsql\u003c/span\u003e\u0026#39;s behavior\n        cannot be unset; instead, an \u003ccode\u003e\\unset\u003c/code\u003e command is interpreted\n        as setting them to their default values.\n        See \u003ca href=\"/docs/18/app-psql.html#APP-PSQL-VARIABLES\" title=\"Variables\" rel=\"nofollow\"\u003eVariables\u003c/a\u003e below.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","ContentHash":"6587500f8d995e60d4a839faf066680d178ac2da90101b9914535e161c655136","Payload":{"description":["Unsets (deletes) the psql variable name ."],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-UNSET\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\unset \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Unsets (deletes) the \u003cspan class=\"application\"\u003epsql\u003c/span\u003e variable \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e.\n        \u003c/p\u003e\u003cp\u003e\n        Most variables that control \u003cspan class=\"application\"\u003epsql\u003c/span\u003e's behavior\n        cannot be unset; instead, an \u003ccode class=\"literal\"\u003e\\unset\u003c/code\u003e command is interpreted\n        as setting them to their default values.\n        See \u003ca class=\"xref\" href=\"/docs/18/app-psql.html#APP-PSQL-VARIABLES\" title=\"Variables\"\u003eVariables\u003c/a\u003e below.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","related":[{"label":"psql command-line options and complete manual","url":"/wiki/tool/psql/?v=18"}],"sections":[],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\unset","url":"/wiki/psql/cmd-75-6e-73-65-74/?v=18"},"modifiers":"None listed in this signature"}],"title":"Spellings in this manual definition"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":[{"Version":"18","Ordinal":0,"Command":"\\unset","Signature":"\\unset name","Modifiers":[]}],"SQLState":null,"Evidence":null}