{"Entry":{"collection":"func","key":"col-description","name":"col_description","aliases":[],"metadata":{"changed_in":["7.4"],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"7.1","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"7.2"},{"descriptions_changed":true,"doc_overhaul":false,"from":"7.3","group_changed":null,"signatures":{"added":["col_description ( table_oid, column_number ) → text"],"removed":["col_description ( tableOID, columnnumber ) → text"]},"status":"changed","to":"7.4"},{"descriptions_changed":false,"doc_overhaul":false,"from":"7.4","group_changed":{"from":"misc","to":"info"},"signatures":{"added":[],"removed":[]},"status":"changed","to":"8.0"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"fb54012a9b7b348dc5464b7fe4fa87fd7688265efb3b507183080b70b16c5bf9","derived_content_hash":"a8e25cfab40d88b249afe86d389d3c2f8c07fe0ed7544d9839d9005bd515d659","documentation_refresh":{"batch":"20261113","original_source_rev":"wiki-repair-20261023:22c2c1dfcf2eb570cc0513f17a133af79ab0b37179f158b2dfb50e836a813af2","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"first_version":"7.2","group":"info","group_label":"System Information Functions And Operators","groups":["misc","info"],"imported_at":"2026-09-27T17:57:29.032381+08:00","last_version":"20","name":"col_description","name_key":"col_description","position":28002,"present_in":["7.2","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:e18de4ef56766b2f571004b2b76f13d936139d0c0a14759f067418ce115443fe","receipt_sha256":"a751a1f95a2c26cbd1787cdfef620ac5bb6e7fd7cf7c89f96f1a58ad9d148c6f","repair":"wiki-repair-20261023"},"signature":"col_description ( table oid, column integer ) → text","signature_count":1,"slug":"col-description","source_rev":"wiki-repair-20261023:22c2c1dfcf2eb570cc0513f17a133af79ab0b37179f158b2dfb50e836a813af2","summary":"Returns the comment for a table column, which is specified by the OID of its table and its column number.","summary_zh":""}},"Definition":{"Collection":"func","Key":"col-description","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"col-description","SourceRevision":"wiki-repair-20261023:22c2c1dfcf2eb570cc0513f17a133af79ab0b37179f158b2dfb50e836a813af2","Facts":{"description":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","description_html":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","description_zh":"返回表列的注释，列由所属表的 OID 和列号指定。（obj_description 不能用于表列，因为列没有自身的 OID。）","description_zh_html":"返回表列的注释，列由所属表的 OID 和列号指定。（\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e 不能用于表列，因为列没有自身的 OID。）","doc":{"anchor":"FUNCTIONS-INFO-COMMENT-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":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","description_html":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","description_zh":"返回表列的注释，列由所属表的 OID 和列号指定。（obj_description 不能用于表列，因为列没有自身的 OID。）","description_zh_html":"返回表列的注释，列由所属表的 OID 和列号指定。（\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e 不能用于表列，因为列没有自身的 OID。）","examples":[],"html":"\u003ccode class=\"function\"\u003ecol_description\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003etable\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eoid\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ecolumn\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"col_description ( table oid, column integer ) → text","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-COMMENT-TABLE","file":"functions-info.html","sha256":"64499116227a087138bb14f29ff6652b200a176d5df3ce2a089c3d5c226b19b3","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"col-description","SourceDatabase":"center","Version":"18","Locale":"en","Title":"col_description","Summary":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","BodyHTML":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","SourceRevision":"wiki-repair-20261023:22c2c1dfcf2eb570cc0513f17a133af79ab0b37179f158b2dfb50e836a813af2","ContentHash":"aae9dfa4281ecfe29299d90748dcd7178cc9474c39bd654119659bede5c80597","Payload":{"description":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","description_html":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","signatures":[{"description":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","description_html":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","description_zh":"返回表列的注释，列由所属表的 OID 和列号指定。（obj_description 不能用于表列，因为列没有自身的 OID。）","description_zh_html":"返回表列的注释，列由所属表的 OID 和列号指定。（\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e 不能用于表列，因为列没有自身的 OID。）","examples":[],"html":"\u003ccode class=\"function\"\u003ecol_description\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003etable\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eoid\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ecolumn\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"col_description ( table oid, column integer ) → text","zh_from":"same-version-manual"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","7.2","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":"a3d1b325a57b6210f0d877aacd3199ad32b1dc2eb048e221b2397e556fc75720","Text":"col_description ( table oid, column integer ) → text","Returns":"text","Payload":{"description":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (obj_description cannot be used for table columns, since columns do not have OIDs of their own.)","description_html":"Returns the comment for a table column, which is specified by the OID of its table and its column number. (\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e cannot be used for table columns, since columns do not have OIDs of their own.)","description_zh":"返回表列的注释，列由所属表的 OID 和列号指定。（obj_description 不能用于表列，因为列没有自身的 OID。）","description_zh_html":"返回表列的注释，列由所属表的 OID 和列号指定。（\u003ccode class=\"function\"\u003eobj_description\u003c/code\u003e 不能用于表列，因为列没有自身的 OID。）","examples":[],"html":"\u003ccode class=\"function\"\u003ecol_description\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003etable\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003eoid\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003ecolumn\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"col_description ( table oid, column integer ) → text","zh_from":"same-version-manual"}}],"Spellings":null,"SQLState":null,"Evidence":null}
