{"Entry":{"collection":"func","key":"num-nulls","name":"num_nulls","aliases":[],"metadata":{"changed_in":[],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"9.5","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"9.6"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"85c82bac95ec789304539fa1b69d401c9a7779f70422da68fd7a58ad108f913f","first_version":"9.6","group":"comparison","group_label":"Comparison Functions And Operators","groups":["comparison"],"imported_at":"2026-09-14T21:49:48.609325+08:00","last_version":"20","name":"num_nulls","name_key":"num_nulls","position":1002,"present_in":["9.6","10","11","12","13","14","15","16","17","18","19","20"],"signature":"num_nulls ( VARIADIC \"any\" ) → integer","signature_count":1,"slug":"num-nulls","source_rev":"2026-09-14T13:14:25.684213+00:00@99e6866c","summary":"Returns the number of null arguments.","summary_zh":""}},"Definition":{"Collection":"func","Key":"num-nulls","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"num-nulls","SourceRevision":"2026-09-14T13:14:25.684213+00:00@99e6866c","Facts":{"description":"Returns the number of null arguments.","description_html":"Returns the number of null arguments.","description_zh":"","description_zh_html":"","doc":{"anchor":"FUNCTIONS-COMPARISON-FUNC-TABLE","file":"functions-comparison.html","slug":"18"},"group":"comparison","group_label":"Comparison Functions And Operators","lang":"en","layout":"table-new","pages":["functions-comparison.html"],"prose_only":false,"signatures":[{"description":"Returns the number of null arguments.","description_html":"Returns the number of null arguments.","description_zh":"","description_zh_html":"","examples":[{"expr":"num_nulls(1, NULL, 2)","result":"1"}],"html":"\u003ccode class=\"function\"\u003enum_nulls\u003c/code\u003e ( \u003ccode class=\"literal\"\u003eVARIADIC\u003c/code\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003einteger\u003c/code\u003e","returns":"integer","text":"num_nulls ( VARIADIC \"any\" ) → integer","zh_from":""}],"zh_from":""},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-COMPARISON-FUNC-TABLE","file":"functions-comparison.html","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"num-nulls","SourceDatabase":"pgweb","Version":"18","Locale":"zh-Hans","Title":"num_nulls","Summary":"返回 null 参数的数量。","BodyHTML":"返回 null 参数的数量。\u003cpre\u003enum_nulls ( VARIADIC \u0026#34;any\u0026#34; ) → integer\u003c/pre\u003e返回 null 参数的数量。","SourceRevision":"ca936764","ContentHash":"c24080138f3157691ef66a585a4396c1f45a69e1cfcae0f978b7d2499d3c0cc6","Payload":{"description_zh":"返回 null 参数的数量。","description_zh_html":"返回 null 参数的数量。","signatures":[{"description_zh":"返回 null 参数的数量。","description_zh_html":"返回 null 参数的数量。","returns":"integer","text":"num_nulls ( VARIADIC \"any\" ) → integer","zh_from":"doc"}],"zh_from":"doc"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","9.6"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"5e7ee5455f5adc795ed836cfd7853487473f55359262664bb1e62f1e5cf83b17","Text":"num_nulls ( VARIADIC \"any\" ) → integer","Returns":"integer","Payload":{"description":"Returns the number of null arguments.","description_html":"Returns the number of null arguments.","description_zh":"","description_zh_html":"","examples":[{"expr":"num_nulls(1, NULL, 2)","result":"1"}],"html":"\u003ccode class=\"function\"\u003enum_nulls\u003c/code\u003e ( \u003ccode class=\"literal\"\u003eVARIADIC\u003c/code\u003e \u003ccode class=\"type\"\u003e\"any\"\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003einteger\u003c/code\u003e","returns":"integer","text":"num_nulls ( VARIADIC \"any\" ) → integer","zh_from":""}}],"Spellings":null,"SQLState":null,"Evidence":null}
