{"Entry":{"collection":"operator","key":"op-3c2d3e-circle-circle","name":"\u003c-\u003e(circle,circle)","aliases":["\u003c-\u003e","\u003c-\u003e(circle,circle)"],"metadata":{"aliases":["\u003c-\u003e","\u003c-\u003e(circle,circle)"],"category":"Geometric","content_hash":"ef3e71b4ae13d23e411a7d1fd480864bdfec4fe4545ccb4b6ac79526273eed8f","imported_at":"2026-09-30T00:40:41.552838+08:00","name":"\u003c-\u003e(circle,circle)","name_zh":"","slug":"op-3c2d3e-circle-circle","summary":"distance between"}},"Definition":{"Collection":"operator","Key":"op-3c2d3e-circle-circle","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-3c2d3e-circle-circle","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["\u003c-\u003e","\u003c-\u003e(circle,circle)"],"comparison_data":{"memberships":[],"operator":{"commutator":"\u003c-\u003e(circle,circle)","function":"circle_distance(circle,circle)","hash_join":"f","kind":"b","left_type":"circle","merge_join":"f","negator":"","result_type":"float8","right_type":"circle","symbol":"\u003c-\u003e"}},"comparison_hash":"4e41078213b2389b4865794dd465fe191f13bb6ca862d596ac15cf877ee74cb6","description":["distance between"],"facts":[{"label":"Left operand","value":"circle"},{"label":"Right operand","value":"circle"},{"label":"Result type","value":"float8"},{"label":"Implementing function","value":"circle_distance(circle,circle)"},{"label":"Operator kind","value":"Binary"},{"label":"Hash join candidate","value":"no"},{"label":"Merge join candidate","value":"no"}],"manual_semantics":"Source catalog description; no additional matching manual operator definition claimed","memberships":[],"operator":{"commutator":"\u003c-\u003e(circle,circle)","function":"circle_distance(circle,circle)","hash_join":"f","kind":"b","left_type":"circle","merge_join":"f","negator":"","result_type":"float8","right_type":"circle","symbol":"\u003c-\u003e"},"related":[{"label":"circle data type","url":"/wiki/type/circle/?v=18"},{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"Commutator: \u003c-\u003e(circle,circle)","url":"/wiki/operator/op-3c2d3e-circle-circle/?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":"\u003c-\u003e(circle,circle) → float8","source_oid":"1520","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":[]},"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-3c2d3e-circle-circle","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\u003c-\u003e(circle,circle)","Summary":"distance between","BodyHTML":"\u003cp\u003edistance between\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"01e8815c4638eed3f00d7bdd41815ec611e2c16863ffb64056b53e3cf4b0342d","Payload":{"description":["distance between"],"related":[{"label":"circle data type","url":"/wiki/type/circle/?v=18"},{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"Commutator: \u003c-\u003e(circle,circle)","url":"/wiki/operator/op-3c2d3e-circle-circle/?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":[]}},"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}