{"Entry":{"collection":"func","key":"concat","name":"concat","aliases":[],"metadata":{"changed_in":[],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"9.0","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"9.1"},{"descriptions_changed":true,"doc_overhaul":false,"from":"9.2","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"9.3"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"a479240eacc8ec066ebc72e630dc61788f3841743297bd0a1a32144c43e11dd7","first_version":"9.1","group":"string","group_label":"String Functions And Operators","groups":["string"],"imported_at":"2026-09-14T21:49:48.646049+08:00","last_version":"20","name":"concat","name_key":"concat","position":3007,"present_in":["9.1","9.2","9.3","9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19","20"],"signature":"concat ( val1 \"any\" [, val2 \"any\" [, ...] ] ) → text","signature_count":1,"slug":"concat","source_rev":"2026-09-14T13:14:25.684213+00:00@99e6866c","summary":"Concatenates the text representations of all the arguments.","summary_zh":""}},"Definition":{"Collection":"func","Key":"concat","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"concat","SourceRevision":"2026-09-14T13:14:25.684213+00:00@99e6866c","Facts":{"description":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_html":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_zh":"","description_zh_html":"","doc":{"anchor":"FUNCTIONS-STRING-OTHER","file":"functions-string.html","slug":"18"},"group":"string","group_label":"String Functions And Operators","lang":"en","layout":"table-new","pages":["functions-string.html"],"prose_only":false,"signatures":[{"description":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_html":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_zh":"","description_zh_html":"","examples":[{"expr":"concat('abcde', 2, NULL, 22)","result":"abcde222"}],"html":"\u003ccode class=\"function\"\u003econcat\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003eval1\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eval2\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, ...\u003c/span\u003e]\u003c/span\u003e ] ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"concat ( val1 \"any\" [, val2 \"any\" [, ...] ] ) → text","zh_from":""}],"zh_from":""},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-STRING-OTHER","file":"functions-string.html","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"concat","SourceDatabase":"pgweb","Version":"18","Locale":"zh-Hans","Title":"concat","Summary":"串接所有参数的文本表示。NULL 参数被忽略。","BodyHTML":"串接所有参数的文本表示。NULL 参数被忽略。\u003cpre\u003econcat ( val1 \u0026#34;any\u0026#34; [, val2 \u0026#34;any\u0026#34; [, ...] ] ) → text\u003c/pre\u003e串接所有参数的文本表示。NULL 参数被忽略。","SourceRevision":"1b5ca64c","ContentHash":"38ff2f17a1649f5a62f8eaaf6e00f10b93ea6d1c8f0b4646f406ce4aa9c8a438","Payload":{"description_zh":"串接所有参数的文本表示。NULL 参数被忽略。","description_zh_html":"串接所有参数的文本表示。NULL 参数被忽略。","signatures":[{"description_zh":"串接所有参数的文本表示。NULL 参数被忽略。","description_zh_html":"串接所有参数的文本表示。NULL 参数被忽略。","returns":"text","text":"concat ( val1 \"any\" [, val2 \"any\" [, ...] ] ) → text","zh_from":"doc"}],"zh_from":"doc"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","9.1","9.2","9.3","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"af72be30308349310a4c1e77aab9cbe457f4a271cb0ca759eec0fdf81d0f91da","Text":"concat ( val1 \"any\" [, val2 \"any\" [, ...] ] ) → text","Returns":"text","Payload":{"description":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_html":"Concatenates the text representations of all the arguments. NULL arguments are ignored.","description_zh":"","description_zh_html":"","examples":[{"expr":"concat('abcde', 2, NULL, 22)","result":"abcde222"}],"html":"\u003ccode class=\"function\"\u003econcat\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003eval1\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eval2\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, ...\u003c/span\u003e]\u003c/span\u003e ] ) → \u003ccode class=\"returnvalue\"\u003etext\u003c/code\u003e","returns":"text","text":"concat ( val1 \"any\" [, val2 \"any\" [, ...] ] ) → text","zh_from":""}}],"Spellings":null,"SQLState":null,"Evidence":null}