{"Entry":{"collection":"operator","key":"op-3c2d3e-lseg-line","name":"\u003c-\u003e(lseg,line)","aliases":["\u003c-\u003e","\u003c-\u003e(lseg,line)"],"metadata":{"aliases":["\u003c-\u003e","\u003c-\u003e(lseg,line)"],"category":"Geometric","content_hash":"49c02a28933cf74e9aaccfabdd7efe734da9ef4c1dbcb229a9f1f60c92960c6c","derived_content_hash":"42cf9d9b3c665ceecc942755af81b02e16832c117cf2577b7fc6ee64af43f4bc","imported_at":"2026-09-30T00:40:41.582516+08:00","name":"\u003c-\u003e(lseg,line)","name_zh":"","slug":"op-3c2d3e-lseg-line","summary":"distance between"}},"Definition":{"Collection":"operator","Key":"op-3c2d3e-lseg-line","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-3c2d3e-lseg-line","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["\u003c-\u003e","\u003c-\u003e(lseg,line)"],"comparison_data":{"memberships":[],"operator":{"commutator":"\u003c-\u003e(line,lseg)","function":"dist_sl(lseg,line)","hash_join":"f","kind":"b","left_type":"lseg","merge_join":"f","negator":"","result_type":"float8","right_type":"line","symbol":"\u003c-\u003e"}},"comparison_hash":"882829a460875d839a1c1c3a4c1f5661efed1cb9a3cb63102425ae30e87aec26","description":["distance between"],"description_zh":"两者之间的距离。","description_zh_html":"\u003cp\u003e两者之间的距离。\u003c/p\u003e\u003cdl\u003e\u003cdt\u003e种类\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eb\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e符号\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003e\u0026lt;-\u0026gt;\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e实现函数\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003edist_sl(lseg,line)\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e可用于哈希连接\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003e否\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e左操作数类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003elseg\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e交换运算符\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003e\u0026lt;-\u0026gt;(line,lseg)\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e可用于归并连接\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003e否\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e右操作数类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eline\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e结果类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003efloat8\u003c/code\u003e\u003c/dd\u003e\u003c/dl\u003e\u003ch3\u003e同版本中文手册节选\u003c/h3\u003e\u003cp\u003e\n   目录 \u003ccode class=\"structname\"\u003epg_operator\u003c/code\u003e 存储关于操作符的信息。详见 \u003ca class=\"xref\" href=\"/zh/docs/18/sql-createoperator.html\"\u003e\u003cspan class=\"refentrytitle\"\u003eCREATE OPERATOR\u003c/span\u003e\u003c/a\u003e 和\u003ca class=\"xref\" href=\"/zh/docs/18/xoper.html\"\u003e第 36.14 节\u003c/a\u003e。\n  \u003c/p\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/catalog-pg-operator.html\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e\u003cp\u003e本页开头的中文说明为 PG.CENTER 对源码说明的翻译；手册节选保留对应版本中文文档原文。源码信息及手册示例不代表重新进行过运行测试。\u003c/p\u003e","facts":[{"label":"Left operand","value":"lseg"},{"label":"Right operand","value":"line"},{"label":"Result type","value":"float8"},{"label":"Implementing function","value":"dist_sl(lseg,line)"},{"label":"Operator kind","value":"Binary"},{"label":"Hash join candidate","value":"no"},{"label":"Merge join candidate","value":"no"}],"facts_zh":[{"label":"左操作数","value":"lseg"},{"label":"右操作数","value":"line"},{"label":"返回类型","value":"float8"},{"label":"实现函数","value":"dist_sl(lseg,line)"},{"label":"操作符种类","value":"Binary"},{"label":"可用于哈希连接","value":"否"},{"label":"可用于归并连接","value":"否"}],"manual_semantics":"Source catalog description; no additional matching manual operator definition claimed","memberships":[],"operator":{"commutator":"\u003c-\u003e(line,lseg)","function":"dist_sl(lseg,line)","hash_join":"f","kind":"b","left_type":"lseg","merge_join":"f","negator":"","result_type":"float8","right_type":"line","symbol":"\u003c-\u003e"},"related":[{"label":"lseg data type","url":"/wiki/type/lseg/?v=18"},{"label":"line data type","url":"/wiki/type/line/?v=18"},{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"Commutator: \u003c-\u003e(line,lseg)","url":"/wiki/operator/op-3c2d3e-line-lseg/?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"}],"sections_zh":[{"paragraphs":["目录 pg_operator 存储关于操作符的信息。详见 CREATE OPERATOR 和 第 36.14 节 。"],"title":"目录记录解读"}],"signature":"\u003c-\u003e(lseg,line) → float8","source_oid":"616","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":[],"tables_zh":[],"zh_from":{"authored_translation":"authored-translation-of-source-description","body_sha256":"8bb73817534cc81ec433c023e3cac0c399d122fea9abb75df65386ccc391bc59","kind":"same-version-chinese-manual-with-authored-translation-of-source-description","manual":{"anchor":"","build_id":107,"extraction":"concept-introduction","fragment_sha256":"81aed42a595595a07ab55430c00e66eb6d05033809e63b1281b205ed73fb5610","locale":"zh-Hans","page_key":"catalog-pg-operator.html","source_hash":"866547c7d8dd1d830de6c28cee33e2e3adb45288d1d47be58b03fbfb346e9d08","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/catalog-pg-operator.html","version":"18"},"runtime_rerun":false,"source_facts_revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}},"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-lseg-line","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\u003c-\u003e(lseg,line)","Summary":"distance between","BodyHTML":"\u003cp\u003edistance between\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"76af60e75701740a39a4be76862c32bcb751dd2d3c463e566f5c8246706f78b8","Payload":{"description":["distance between"],"related":[{"label":"lseg data type","url":"/wiki/type/lseg/?v=18"},{"label":"line data type","url":"/wiki/type/line/?v=18"},{"label":"float8 data type","url":"/wiki/type/float8/?v=18"},{"label":"Commutator: \u003c-\u003e(line,lseg)","url":"/wiki/operator/op-3c2d3e-line-lseg/?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":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}