{"Entry":{"collection":"operator","key":"op-3d-float8-float8","name":"=(float8,float8)","aliases":["=","=(float8,float8)"],"metadata":{"aliases":["=","=(float8,float8)"],"category":"Numeric","content_hash":"ec54231045ea1efdf1dfc023c5e22d4dad9a1df2aaab6911d2a4ba9b590dcaa3","imported_at":"2026-09-30T00:40:42.488365+08:00","name":"=(float8,float8)","name_zh":"","slug":"op-3d-float8-float8","summary":"equal"}},"Definition":{"Collection":"operator","Key":"op-3d-float8-float8","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-3d-float8-float8","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["=","=(float8,float8)"],"comparison_data":{"memberships":[{"family":"float_bloom_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","purpose":"search","right_type":"float8","sort_family":"","strategy":"1"},{"family":"float_minmax_multi_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","purpose":"search","right_type":"float8","sort_family":"","strategy":"3"},{"family":"float_minmax_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","purpose":"search","right_type":"float8","sort_family":"","strategy":"3"},{"family":"float_ops","left_type":"float8","method":"btree","operator":"=(float8,float8)","purpose":"search","right_type":"float8","sort_family":"","strategy":"3"},{"family":"float_ops","left_type":"float8","method":"hash","operator":"=(float8,float8)","purpose":"search","right_type":"float8","sort_family":"","strategy":"1"}],"operator":{"commutator":"=(float8,float8)","function":"float8eq(float8,float8)","hash_join":"t","kind":"b","left_type":"float8","merge_join":"t","negator":"\u003c\u003e(float8,float8)","result_type":"bool","right_type":"float8","symbol":"="}},"comparison_hash":"d65e88434da0e61e2733fe22f575e51807b27d24c01f8f1fb22967300fa1371c","description":["equal"],"facts":[{"label":"Left operand","value":"float8"},{"label":"Right operand","value":"float8"},{"label":"Result type","value":"bool"},{"label":"Implementing function","value":"float8eq(float8,float8)"},{"label":"Operator kind","value":"Binary"},{"label":"Hash join candidate","value":"yes"},{"label":"Merge join candidate","value":"yes"}],"manual_semantics":"Source catalog description; no additional matching manual operator definition claimed","memberships":[{"description":"equal","family":"float_ops","family_slug":"family-btree-float_ops","left_type":"float8","method":"btree","operator":"=(float8,float8)","operator_slug":"op-3d-float8-float8","purpose":"search","result_type":"bool","right_type":"float8","sort_family":"","sort_family_slug":"","strategy":"3"},{"description":"equal","family":"float_ops","family_slug":"family-hash-float_ops","left_type":"float8","method":"hash","operator":"=(float8,float8)","operator_slug":"op-3d-float8-float8","purpose":"search","result_type":"bool","right_type":"float8","sort_family":"","sort_family_slug":"","strategy":"1"},{"description":"equal","family":"float_minmax_ops","family_slug":"family-brin-float_minmax_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","operator_slug":"op-3d-float8-float8","purpose":"search","result_type":"bool","right_type":"float8","sort_family":"","sort_family_slug":"","strategy":"3"},{"description":"equal","family":"float_minmax_multi_ops","family_slug":"family-brin-float_minmax_multi_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","operator_slug":"op-3d-float8-float8","purpose":"search","result_type":"bool","right_type":"float8","sort_family":"","sort_family_slug":"","strategy":"3"},{"description":"equal","family":"float_bloom_ops","family_slug":"family-brin-float_bloom_ops","left_type":"float8","method":"brin","operator":"=(float8,float8)","operator_slug":"op-3d-float8-float8","purpose":"search","result_type":"bool","right_type":"float8","sort_family":"","sort_family_slug":"","strategy":"1"}],"operator":{"commutator":"=(float8,float8)","function":"float8eq(float8,float8)","hash_join":"t","kind":"b","left_type":"float8","merge_join":"t","negator":"\u003c\u003e(float8,float8)","result_type":"bool","right_type":"float8","symbol":"="},"related":[{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"bool data type","url":"/wiki/type/bool/?v=18"},{"label":"Commutator: =(float8,float8)","url":"/wiki/operator/op-3d-float8-float8/?v=18"},{"label":"Negator: \u003c\u003e(float8,float8)","url":"/wiki/operator/op-3c3e-float8-float8/?v=18"},{"label":"btree/float_ops family","url":"/wiki/opclass/family-btree-float_ops/?v=18"},{"label":"hash/float_ops family","url":"/wiki/opclass/family-hash-float_ops/?v=18"},{"label":"brin/float_minmax_ops family","url":"/wiki/opclass/family-brin-float_minmax_ops/?v=18"},{"label":"brin/float_minmax_multi_ops family","url":"/wiki/opclass/family-brin-float_minmax_multi_ops/?v=18"},{"label":"brin/float_bloom_ops family","url":"/wiki/opclass/family-brin-float_bloom_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":["The catalog pg_operator stores information about operators. See CREATE OPERATOR and Section 36.14 for more information."],"title":"Catalog interpretation"}],"signature":"=(float8,float8) → bool","source_oid":"670","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"}],"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":"float_ops","url":"/wiki/opclass/family-btree-float_ops/?v=18"},"method":{"text":"B-tree","url":"/wiki/indexam/btree/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_ops","url":"/wiki/opclass/family-hash-float_ops/?v=18"},"method":{"text":"Hash","url":"/wiki/indexam/hash/?v=18"},"purpose":"search","sort_family":"","strategy":"1"},{"family":{"text":"float_minmax_ops","url":"/wiki/opclass/family-brin-float_minmax_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_minmax_multi_ops","url":"/wiki/opclass/family-brin-float_minmax_multi_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_bloom_ops","url":"/wiki/opclass/family-brin-float_bloom_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"1"}],"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"}]},"MeasuredEvidence":{}},"Text":{"Collection":"operator","Key":"op-3d-float8-float8","SourceDatabase":"center","Version":"18","Locale":"en","Title":"=(float8,float8)","Summary":"equal","BodyHTML":"\u003cp\u003eequal\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"0767768d5f6d582f02086bb7d1c952a328f7290dc4dd4443a95c71ea5d7c889c","Payload":{"description":["equal"],"related":[{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"bool data type","url":"/wiki/type/bool/?v=18"},{"label":"Commutator: =(float8,float8)","url":"/wiki/operator/op-3d-float8-float8/?v=18"},{"label":"Negator: \u003c\u003e(float8,float8)","url":"/wiki/operator/op-3c3e-float8-float8/?v=18"},{"label":"btree/float_ops family","url":"/wiki/opclass/family-btree-float_ops/?v=18"},{"label":"hash/float_ops family","url":"/wiki/opclass/family-hash-float_ops/?v=18"},{"label":"brin/float_minmax_ops family","url":"/wiki/opclass/family-brin-float_minmax_ops/?v=18"},{"label":"brin/float_minmax_multi_ops family","url":"/wiki/opclass/family-brin-float_minmax_multi_ops/?v=18"},{"label":"brin/float_bloom_ops family","url":"/wiki/opclass/family-brin-float_bloom_ops/?v=18"}],"sections":[{"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":"float_ops","url":"/wiki/opclass/family-btree-float_ops/?v=18"},"method":{"text":"B-tree","url":"/wiki/indexam/btree/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_ops","url":"/wiki/opclass/family-hash-float_ops/?v=18"},"method":{"text":"Hash","url":"/wiki/indexam/hash/?v=18"},"purpose":"search","sort_family":"","strategy":"1"},{"family":{"text":"float_minmax_ops","url":"/wiki/opclass/family-brin-float_minmax_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_minmax_multi_ops","url":"/wiki/opclass/family-brin-float_minmax_multi_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"3"},{"family":{"text":"float_bloom_ops","url":"/wiki/opclass/family-brin-float_bloom_ops/?v=18"},"method":{"text":"BRIN","url":"/wiki/indexam/brin/?v=18"},"purpose":"search","sort_family":"","strategy":"1"}],"title":"Declared operator-family membership"}]}},"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}