{"Entry":{"collection":"operator","key":"op-5e40-text-text","name":"^@(text,text)","aliases":["^@","^@(text,text)"],"metadata":{"aliases":["^@","^@(text,text)"],"category":"Character strings","content_hash":"dd62650f9844904d8d59ef2a06556b35cbfcb096666768e98999c1a17d421aab","imported_at":"2026-09-30T00:40:43.681295+08:00","name":"^@(text,text)","name_zh":"","slug":"op-5e40-text-text","summary":"starts with"}},"Definition":{"Collection":"operator","Key":"op-5e40-text-text","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-5e40-text-text","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["^@","^@(text,text)"],"comparison_data":{"memberships":[{"family":"text_ops","left_type":"text","method":"spgist","operator":"^@(text,text)","purpose":"search","right_type":"text","sort_family":"","strategy":"28"}],"operator":{"commutator":"","function":"starts_with(text,text)","hash_join":"f","kind":"b","left_type":"text","merge_join":"f","negator":"","result_type":"bool","right_type":"text","symbol":"^@"}},"comparison_hash":"4a2ff52c97c994a5e0b903a45e90f7858630794bb37b04de75dd11b366547593","description":["starts with"],"facts":[{"label":"Left operand","value":"text"},{"label":"Right operand","value":"text"},{"label":"Result type","value":"bool"},{"label":"Implementing function","value":"starts_with(text,text)"},{"label":"Operator kind","value":"Binary"},{"label":"Hash join candidate","value":"no"},{"label":"Merge join candidate","value":"no"}],"manual_semantics":"Exact operand/result signature matched","memberships":[{"description":"starts with","family":"text_ops","family_slug":"family-spgist-text_ops","left_type":"text","method":"spgist","operator":"^@(text,text)","operator_slug":"op-5e40-text-text","purpose":"search","result_type":"bool","right_type":"text","sort_family":"","sort_family_slug":"","strategy":"28"}],"operator":{"commutator":"","function":"starts_with(text,text)","hash_join":"f","kind":"b","left_type":"text","merge_join":"f","negator":"","result_type":"bool","right_type":"text","symbol":"^@"},"related":[{"label":"text data type","url":"/wiki/type/text/?v=18"},{"label":"bool data type","url":"/wiki/type/bool/?v=18"},{"label":"spgist/text_ops family","url":"/wiki/opclass/family-spgist-text_ops/?v=18"}],"release":{"catalog_fingerprint":"deec62e0f0c649d9d0d058ddd0b16bf41afffd569c3fd73949ff0971ce5cabd6","channel":"stable","label":"18.6","major":"18","manual_fingerprint":"fefce9e478eb2afe5e17e869492bbedc67dce23d317f0a5257240113d6496ebc","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["Returns true if the first string starts with the second string (equivalent to the starts_with() function).","'alphabet' ^@ 'alph' → t"],"title":"English manual definition"},{"paragraphs":["The catalog pg_operator stores information about operators. See CREATE OPERATOR and Section 36.14 for more information."],"title":"Catalog interpretation"}],"signature":"^@(text,text) → bool","source_oid":"3877","sources":[{"label":"Matching PostgreSQL source archive","sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"},{"label":"PostgreSQL 18 English manual: catalog-pg-operator.html","path":"catalog-pg-operator.html","sha256":"e0b1817914e5e8f9037955cd41e9a43584e9227fcc115784898ecdd9a6c0ecd6","url":"/docs/18/catalog-pg-operator.html"},{"label":"PostgreSQL 18 English manual: catalog-pg-amop.html","path":"catalog-pg-amop.html","sha256":"e65b90ee78eaf4b4da97ce5b08b972cee2e2660b882ec107be22eca47201f7d1","url":"/docs/18/catalog-pg-amop.html"},{"label":"PostgreSQL 18 English manual: functions-string.html","path":"functions-string.html","sha256":"eb74cd80615135c0426a0b994588d43c65ebbce7f7753b7fe94ffe36381d7138","url":"/docs/18/functions-string.html#FUNCTIONS-STRING-OTHER"}],"tables":[{"columns":[{"key":"method","label":"Index AM"},{"key":"family","label":"Family"},{"key":"strategy","label":"Strategy"},{"key":"purpose","label":"Purpose"},{"key":"sort_family","label":"Ordering family"}],"key":"memberships","rows":[{"family":{"text":"text_ops","url":"/wiki/opclass/family-spgist-text_ops/?v=18"},"method":{"text":"SP-GiST","url":"/wiki/indexam/spgist/?v=18"},"purpose":"search","sort_family":"","strategy":"28"}],"title":"Declared operator-family membership"}]},"ManualEvidence":{"release":{"catalog_fingerprint":"deec62e0f0c649d9d0d058ddd0b16bf41afffd569c3fd73949ff0971ce5cabd6","channel":"stable","label":"18.6","major":"18","manual_fingerprint":"fefce9e478eb2afe5e17e869492bbedc67dce23d317f0a5257240113d6496ebc","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"label":"Matching PostgreSQL source archive","sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"},{"label":"PostgreSQL 18 English manual: catalog-pg-operator.html","path":"catalog-pg-operator.html","sha256":"e0b1817914e5e8f9037955cd41e9a43584e9227fcc115784898ecdd9a6c0ecd6","url":"/docs/18/catalog-pg-operator.html"},{"label":"PostgreSQL 18 English manual: catalog-pg-amop.html","path":"catalog-pg-amop.html","sha256":"e65b90ee78eaf4b4da97ce5b08b972cee2e2660b882ec107be22eca47201f7d1","url":"/docs/18/catalog-pg-amop.html"},{"label":"PostgreSQL 18 English manual: functions-string.html","path":"functions-string.html","sha256":"eb74cd80615135c0426a0b994588d43c65ebbce7f7753b7fe94ffe36381d7138","url":"/docs/18/functions-string.html#FUNCTIONS-STRING-OTHER"}]},"MeasuredEvidence":{}},"Text":{"Collection":"operator","Key":"op-5e40-text-text","SourceDatabase":"center","Version":"18","Locale":"en","Title":"^@(text,text)","Summary":"starts with","BodyHTML":"\u003cp\u003estarts with\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"8f7993a2bf2184dce5ce32bdaebafd0b102410c451215b4cfd7f2a96cd8786fb","Payload":{"description":["starts with"],"related":[{"label":"text data type","url":"/wiki/type/text/?v=18"},{"label":"bool data type","url":"/wiki/type/bool/?v=18"},{"label":"spgist/text_ops family","url":"/wiki/opclass/family-spgist-text_ops/?v=18"}],"sections":[{"paragraphs":["Returns true if the first string starts with the second string (equivalent to the starts_with() function).","'alphabet' ^@ 'alph' → t"],"title":"English manual definition"},{"paragraphs":["The catalog pg_operator stores information about operators. See CREATE OPERATOR and Section 36.14 for more information."],"title":"Catalog interpretation"}],"tables":[{"columns":[{"key":"method","label":"Index AM"},{"key":"family","label":"Family"},{"key":"strategy","label":"Strategy"},{"key":"purpose","label":"Purpose"},{"key":"sort_family","label":"Ordering family"}],"key":"memberships","rows":[{"family":{"text":"text_ops","url":"/wiki/opclass/family-spgist-text_ops/?v=18"},"method":{"text":"SP-GiST","url":"/wiki/indexam/spgist/?v=18"},"purpose":"search","sort_family":"","strategy":"28"}],"title":"Declared operator-family membership"}]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["11","12","13","14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}