{"Entry":{"collection":"func","key":"regexp-count","name":"regexp_count","aliases":[],"metadata":{"changed_in":["19"],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"14","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"15"},{"descriptions_changed":true,"doc_overhaul":false,"from":"18","group_changed":null,"signatures":{"added":["regexp_count(string, pattern [, start [, flags]]) → integer"],"removed":[]},"status":"changed","to":"19"}],"content_hash":"a1fe3f8a7187ad93539b4b13b1923529ae71577fbeb8750513abe2a7010478a5","derived_content_hash":"02a2b113436f324198dc60e803d2eec00bbb2781a68bfacf810562271884936b","documentation_refresh":{"batch":"20261113","original_source_rev":"wiki-repair-20261023:222846113faa325d89827c723b7d15fddcca5b16dcddc248a03f5dba2f929ce3","versions":{"15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"first_version":"15","group":"string","group_label":"String Functions And Operators","groups":["string","matching"],"imported_at":"2026-09-14T21:49:48.660607+08:00","last_version":"20","name":"regexp_count","name_key":"regexp_count","position":3027,"present_in":["15","16","17","18","19","20"],"repair_provenance":{"original_source_revision":"2026-09-14T13:14:25.684213+00:00@99e6866c","receipt_sha256":"5c76cd0ad5a53eb411ed450793cbba6e919464ca4e76f048cc192597364f3e7b","repair":"wiki-repair-20261023"},"signature":"regexp_count ( string text, pattern text [, start integer [, flags text ] ] ) → integer","signature_count":2,"slug":"regexp-count","source_rev":"wiki-repair-20261023:222846113faa325d89827c723b7d15fddcca5b16dcddc248a03f5dba2f929ce3","summary":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.1.2.","summary_zh":""}},"Definition":{"Collection":"func","Key":"regexp-count","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"regexp-count","SourceRevision":"wiki-repair-20261023:222846113faa325d89827c723b7d15fddcca5b16dcddc248a03f5dba2f929ce3","Facts":{"description":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","description_html":"Returns the number of times the POSIX regular expression \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003eSection 9.7.3\u003c/a\u003e.","description_zh":"返回 POSIX 正则表达式 pattern 在 string 中匹配的次数；参见第 9.7.3 节。","description_zh_html":"返回 POSIX 正则表达式 \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e 在 \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e 中匹配的次数；参见\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX正则表达式\"\u003e第 9.7.3 节\u003c/a\u003e。","doc":{"anchor":"FUNCTIONS-STRING-OTHER","file":"functions-string.html","sha256":"dbe9f91e55c35969d99a8d2697b6f7bd5388a24ccc2b89706a666f176025f1e2","slug":"18"},"documentation_revision":{"inputs":[{"file":"functions-string.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"dbe9f91e55c35969d99a8d2697b6f7bd5388a24ccc2b89706a666f176025f1e2","version":"18.7"},{"file":"functions-string.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"7eecd3bb343149124be0476a539f3c682476eab2a15489a0e0ad06fbb769ea9e","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"group":"string","group_label":"字符串函数和操作符","lang":"en","layout":"table-new","pages":["functions-string.html"],"prose_only":false,"signatures":[{"description":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","description_html":"Returns the number of times the POSIX regular expression \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003eSection 9.7.3\u003c/a\u003e.","description_zh":"返回 POSIX 正则表达式 pattern 在 string 中匹配的次数；参见第 9.7.3 节。","description_zh_html":"返回 POSIX 正则表达式 \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e 在 \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e 中匹配的次数；参见\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX正则表达式\"\u003e第 9.7.3 节\u003c/a\u003e。","examples":[{"expr":"regexp_count('123456789012', '\\d\\d\\d', 2)","result":"3"}],"html":"\u003ccode class=\"function\"\u003eregexp_count\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003estart\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eflags\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e\u003c/span\u003e] \u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003einteger\u003c/code\u003e","returns":"integer","text":"regexp_count ( string text, pattern text [, start integer [, flags text] ] ) → integer","zh_from":"same-version-manual"}],"translation_provenance":{"inputs":[{"kind":"current-pgdoc-translation","path":"/Users/vonng/pgsty/pgdoc/zh/18/html/functions-string.html","sha256":"0446377e0eccc9299099dc4b4b293204c337e3abefcdc396e9698bc54dd1080b"}],"kind":"same-version-pgdoc","locale":"zh-Hans","source_revision":"b1b500221dbe5437cfca004d6b04d3f6e422765d","version":"18"},"zh_from":"same-version-manual"},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-STRING-OTHER","file":"functions-string.html","sha256":"dbe9f91e55c35969d99a8d2697b6f7bd5388a24ccc2b89706a666f176025f1e2","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"regexp-count","SourceDatabase":"center","Version":"18","Locale":"en","Title":"regexp_count","Summary":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","BodyHTML":"Returns the number of times the POSIX regular expression \u003cem\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" rel=\"nofollow\"\u003eSection 9.7.3\u003c/a\u003e.","SourceRevision":"wiki-repair-20261023:222846113faa325d89827c723b7d15fddcca5b16dcddc248a03f5dba2f929ce3","ContentHash":"3708cafa1805411e8842e438f54d5babe9cfb7f2c8399ea4af6408247f3481f5","Payload":{"description":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","description_html":"Returns the number of times the POSIX regular expression \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003eSection 9.7.3\u003c/a\u003e.","signatures":[{"description":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","description_html":"Returns the number of times the POSIX regular expression \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003eSection 9.7.3\u003c/a\u003e.","description_zh":"返回 POSIX 正则表达式 pattern 在 string 中匹配的次数；参见第 9.7.3 节。","description_zh_html":"返回 POSIX 正则表达式 \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e 在 \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e 中匹配的次数；参见\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX正则表达式\"\u003e第 9.7.3 节\u003c/a\u003e。","examples":[{"expr":"regexp_count('123456789012', '\\d\\d\\d', 2)","result":"3"}],"html":"\u003ccode class=\"function\"\u003eregexp_count\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003estart\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eflags\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e\u003c/span\u003e] \u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003einteger\u003c/code\u003e","returns":"integer","text":"regexp_count ( string text, pattern text [, start integer [, flags text] ] ) → integer","zh_from":"same-version-manual"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"98442ce3791d054c7fc09b2627b3ab49ce004549bbd57ea49716c3444ceb34a9","Text":"regexp_count ( string text, pattern text [, start integer [, flags text] ] ) → integer","Returns":"integer","Payload":{"description":"Returns the number of times the POSIX regular expression pattern matches in the string; see Section 9.7.3.","description_html":"Returns the number of times the POSIX regular expression \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e matches in the \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e; see \u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX Regular Expressions\"\u003eSection 9.7.3\u003c/a\u003e.","description_zh":"返回 POSIX 正则表达式 pattern 在 string 中匹配的次数；参见第 9.7.3 节。","description_zh_html":"返回 POSIX 正则表达式 \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e 在 \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e 中匹配的次数；参见\u003ca href=\"/docs/18/functions-matching.html#FUNCTIONS-POSIX-REGEXP\" title=\"9.7.3. POSIX正则表达式\"\u003e第 9.7.3 节\u003c/a\u003e。","examples":[{"expr":"regexp_count('123456789012', '\\d\\d\\d', 2)","result":"3"}],"html":"\u003ccode class=\"function\"\u003eregexp_count\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003estart\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003einteger\u003c/code\u003e [\u003cspan class=\"optional\"\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eflags\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003etext\u003c/code\u003e\u003c/span\u003e] \u003c/span\u003e] ) → \u003ccode class=\"returnvalue\"\u003einteger\u003c/code\u003e","returns":"integer","text":"regexp_count ( string text, pattern text [, start integer [, flags text] ] ) → integer","zh_from":"same-version-manual"}}],"Spellings":null,"SQLState":null,"Evidence":null}