{"Entry":{"collection":"func","key":"to-regclass","name":"to_regclass","aliases":[],"metadata":{"changed_in":[],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"9.3","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"9.4"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"},{"descriptions_changed":true,"doc_overhaul":false,"from":"15","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"16"}],"content_hash":"ec41f5c3c4e9f860c2036a44fd7ca017b1c8575e01049673e287390b63bf8879","derived_content_hash":"5f1e3c0e3ef62eb6cd1700464fa76714f1b52be643784eb7b0d93f2a7501fe90","documentation_refresh":{"batch":"20261113","original_source_rev":"wiki-repair-20261023:28e13671097668b11e34c565a82f55705d51418849795c8038fb1e6456c25af1","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"first_version":"9.4","group":"info","group_label":"System Information Functions And Operators","groups":["info"],"imported_at":"2026-09-27T17:57:29.348644+08:00","last_version":"20","name":"to_regclass","name_key":"to_regclass","position":28123,"present_in":["9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19","20"],"repair_provenance":{"original_source_revision":"b7bd9cda","receipt_sha256":"e1ac5734b622964a577a5c427839a0aa9b8b57b88d354c0bd0afd4aa029761f5","repair":"wiki-repair-20261023"},"signature":"to_regclass ( text ) → regclass","signature_count":1,"slug":"to-regclass","source_rev":"wiki-repair-20261023:28e13671097668b11e34c565a82f55705d51418849795c8038fb1e6456c25af1","summary":"Translates a textual relation name to its OID.","summary_zh":""}},"Definition":{"Collection":"func","Key":"to-regclass","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"to-regclass","SourceRevision":"wiki-repair-20261023:28e13671097668b11e34c565a82f55705d51418849795c8038fb1e6456c25af1","Facts":{"description":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","description_html":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. Object Identifier Types\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","description_zh":"将文本关系名转换为它的 OID。通过将字符串类型转换为 regclass 可以得到类似的结果（参见第 8.19 节）；但是，如果没有找到名称，这个函数将返回 NULL 而不会抛出错误。","description_zh_html":"将文本关系名转换为它的 OID。通过将字符串类型转换为 \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e 可以得到类似的结果（参见\u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e第 8.19 节\u003c/a\u003e）；但是，如果没有找到名称，这个函数将返回 \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e 而不会抛出错误。","doc":{"anchor":"FUNCTIONS-INFO-CATALOG-TABLE","file":"functions-info.html","sha256":"64499116227a087138bb14f29ff6652b200a176d5df3ce2a089c3d5c226b19b3","slug":"18"},"documentation_revision":{"inputs":[{"file":"functions-info.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"64499116227a087138bb14f29ff6652b200a176d5df3ce2a089c3d5c226b19b3","version":"18.7"},{"file":"functions-info.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"f9684137c0b9fb17a691c4d905529d114472a507a007c15058f2703962b611d2","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"group":"info","group_label":"系统信息函数和操作符","lang":"en","layout":"table-new","pages":["functions-info.html"],"prose_only":false,"signatures":[{"description":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","description_html":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. Object Identifier Types\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","description_zh":"将文本关系名转换为它的 OID。通过将字符串类型转换为 regclass 可以得到类似的结果（参见第 8.19 节）；但是，如果没有找到名称，这个函数将返回 NULL 而不会抛出错误。","description_zh_html":"将文本关系名转换为它的 OID。通过将字符串类型转换为 \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e 可以得到类似的结果（参见\u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e第 8.19 节\u003c/a\u003e）；但是，如果没有找到名称，这个函数将返回 \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e 而不会抛出错误。","examples":[],"html":"\u003ccode class=\"function\"\u003eto_regclass\u003c/code\u003e ( \u003ccode class=\"type\"\u003etext\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eregclass\u003c/code\u003e","returns":"regclass","text":"to_regclass ( text ) → regclass","zh_from":"same-version-manual"}],"translation_provenance":{"inputs":[{"kind":"current-pgdoc-translation","path":"/Users/vonng/pgsty/pgdoc/zh/18/html/functions-info.html","sha256":"7c33185e79430cfbda432dc4db277115c7ac846afccadfcf904ceb1bf2aa1ba5"}],"kind":"same-version-pgdoc","locale":"zh-Hans","source_revision":"b1b500221dbe5437cfca004d6b04d3f6e422765d","version":"18"},"zh_from":"same-version-manual"},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-INFO-CATALOG-TABLE","file":"functions-info.html","sha256":"64499116227a087138bb14f29ff6652b200a176d5df3ce2a089c3d5c226b19b3","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"to-regclass","SourceDatabase":"center","Version":"18","Locale":"en","Title":"to_regclass","Summary":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","BodyHTML":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" rel=\"nofollow\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","SourceRevision":"wiki-repair-20261023:28e13671097668b11e34c565a82f55705d51418849795c8038fb1e6456c25af1","ContentHash":"1ebc48f9e30bc348376996411b8ee7ec458b8e2ac2ba43513957d59fb71c6e0a","Payload":{"description":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","description_html":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. Object Identifier Types\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","signatures":[{"description":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","description_html":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. Object Identifier Types\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","description_zh":"将文本关系名转换为它的 OID。通过将字符串类型转换为 regclass 可以得到类似的结果（参见第 8.19 节）；但是，如果没有找到名称，这个函数将返回 NULL 而不会抛出错误。","description_zh_html":"将文本关系名转换为它的 OID。通过将字符串类型转换为 \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e 可以得到类似的结果（参见\u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e第 8.19 节\u003c/a\u003e）；但是，如果没有找到名称，这个函数将返回 \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e 而不会抛出错误。","examples":[],"html":"\u003ccode class=\"function\"\u003eto_regclass\u003c/code\u003e ( \u003ccode class=\"type\"\u003etext\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eregclass\u003c/code\u003e","returns":"regclass","text":"to_regclass ( text ) → regclass","zh_from":"same-version-manual"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"36ce43065fb678f43eb3e58c0c1e6ee609cd42bac6ce507f4378697ab461ecdf","Text":"to_regclass ( text ) → regclass","Returns":"regclass","Payload":{"description":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type regclass (see Section 8.19); however, this function will return NULL rather than throwing an error if the name is not found.","description_html":"Translates a textual relation name to its OID. A similar result is obtained by casting the string to type \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e (see \u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. Object Identifier Types\"\u003eSection 8.19\u003c/a\u003e); however, this function will return \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e rather than throwing an error if the name is not found.","description_zh":"将文本关系名转换为它的 OID。通过将字符串类型转换为 regclass 可以得到类似的结果（参见第 8.19 节）；但是，如果没有找到名称，这个函数将返回 NULL 而不会抛出错误。","description_zh_html":"将文本关系名转换为它的 OID。通过将字符串类型转换为 \u003ccode class=\"type\"\u003eregclass\u003c/code\u003e 可以得到类似的结果（参见\u003ca href=\"/docs/18/datatype-oid.html\" title=\"8.19. 对象标识符类型\"\u003e第 8.19 节\u003c/a\u003e）；但是，如果没有找到名称，这个函数将返回 \u003ccode class=\"literal\"\u003eNULL\u003c/code\u003e 而不会抛出错误。","examples":[],"html":"\u003ccode class=\"function\"\u003eto_regclass\u003c/code\u003e ( \u003ccode class=\"type\"\u003etext\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003eregclass\u003c/code\u003e","returns":"regclass","text":"to_regclass ( text ) → regclass","zh_from":"same-version-manual"}}],"Spellings":null,"SQLState":null,"Evidence":null}
