{"Entry":{"collection":"operator","key":"op-3c3c-bit-int4","name":"\u003c\u003c(bit,int4)","aliases":["\u003c\u003c","\u003c\u003c(bit,int4)"],"metadata":{"aliases":["\u003c\u003c","\u003c\u003c(bit,int4)"],"category":"Bit strings","content_hash":"5a3615ffab54e8ba10d2d9423ea4247b49eec6fd58acc7093a2a5026c038b6dd","imported_at":"2026-09-30T00:40:41.659653+08:00","name":"\u003c\u003c(bit,int4)","name_zh":"","slug":"op-3c3c-bit-int4","summary":"bitwise shift left"}},"Definition":{"Collection":"operator","Key":"op-3c3c-bit-int4","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-3c3c-bit-int4","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["\u003c\u003c","\u003c\u003c(bit,int4)"],"comparison_data":{"memberships":[],"operator":{"commutator":"","function":"bitshiftleft(bit,int4)","hash_join":"f","kind":"b","left_type":"bit","merge_join":"f","negator":"","result_type":"bit","right_type":"int4","symbol":"\u003c\u003c"}},"comparison_hash":"9d45d577a9037feba31cbcded1a794461418bf7d93c8963ac3c57f4d5a850c56","description":["bitwise shift left"],"facts":[{"label":"Left operand","value":"bit"},{"label":"Right operand","value":"int4"},{"label":"Result type","value":"bit"},{"label":"Implementing function","value":"bitshiftleft(bit,int4)"},{"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":[],"operator":{"commutator":"","function":"bitshiftleft(bit,int4)","hash_join":"f","kind":"b","left_type":"bit","merge_join":"f","negator":"","result_type":"bit","right_type":"int4","symbol":"\u003c\u003c"},"related":[{"label":"bit data type","url":"/wiki/type/bit/?v=18"},{"label":"int4 data type","url":"/wiki/type/int4/?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":["Bitwise shift left (string length is preserved)","B'10001' \u003c\u003c 3 → 01000"],"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":"\u003c\u003c(bit,int4) → bit","source_oid":"1795","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-bitstring.html","path":"functions-bitstring.html","sha256":"e710b5de82fd3f8d085943ebb37c543709251f3ddf25038612cd096b61cbd913","url":"/docs/18/functions-bitstring.html#FUNCTIONS-BIT-STRING-OP-TABLE"}],"tables":[]},"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-bitstring.html","path":"functions-bitstring.html","sha256":"e710b5de82fd3f8d085943ebb37c543709251f3ddf25038612cd096b61cbd913","url":"/docs/18/functions-bitstring.html#FUNCTIONS-BIT-STRING-OP-TABLE"}]},"MeasuredEvidence":{}},"Text":{"Collection":"operator","Key":"op-3c3c-bit-int4","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\u003c\u003c(bit,int4)","Summary":"bitwise shift left","BodyHTML":"\u003cp\u003ebitwise shift left\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"df91431b2e5347a69ce0a11cf3ce3e8c41c6844a95b3f6b2ae640536ac9a6124","Payload":{"description":["bitwise shift left"],"related":[{"label":"bit data type","url":"/wiki/type/bit/?v=18"},{"label":"int4 data type","url":"/wiki/type/int4/?v=18"}],"sections":[{"paragraphs":["Bitwise shift left (string length is preserved)","B'10001' \u003c\u003c 3 → 01000"],"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":[]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}