{"Entry":{"collection":"operator","key":"op-7c7c-anycompatible-anycompatiblearray","name":"||(anycompatible,anycompatiblearray)","aliases":["||","||(anycompatible,anycompatiblearray)"],"metadata":{"aliases":["||","||(anycompatible,anycompatiblearray)"],"category":"Pseudo-types","content_hash":"bff621d6ac234f6896ed056dcdf82096c3d9287df18b70f83366d83a000ed1ca","derived_content_hash":"88991dfa81bd3fb0d87add03b0f83eb819cadc4627e9a22e2da7004e987e7670","imported_at":"2026-09-30T00:40:43.769658+08:00","name":"||(anycompatible,anycompatiblearray)","name_zh":"","slug":"op-7c7c-anycompatible-anycompatiblearray","summary":"prepend element onto front of array"}},"Definition":{"Collection":"operator","Key":"op-7c7c-anycompatible-anycompatiblearray","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-7c7c-anycompatible-anycompatiblearray","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["||","||(anycompatible,anycompatiblearray)"],"comparison_data":{"memberships":[],"operator":{"commutator":"","function":"array_prepend(anycompatible,anycompatiblearray)","hash_join":"f","kind":"b","left_type":"anycompatible","merge_join":"f","negator":"","result_type":"anycompatiblearray","right_type":"anycompatiblearray","symbol":"||"}},"comparison_hash":"e62599b503585ea6ef3e6f985b5b4ce67a6db33892e8e10063ff7f82e1963118","description":["prepend element onto front of array"],"description_zh":"在数组开头添加元素。","description_zh_html":"\u003cp\u003e在数组开头添加元素。\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||\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e实现函数\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003earray_prepend(anycompatible,anycompatiblearray)\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\u003eanycompatible\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\u003eanycompatiblearray\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e结果类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eanycompatiblearray\u003c/code\u003e\u003c/dd\u003e\u003c/dl\u003e\u003ch3\u003e同版本中文手册节选\u003c/h3\u003e\u003cp class=\"title\"\u003e\u003cstrong\u003e表 9.56. 数组操作符\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/functions-array.html#ARRAY-OPERATORS-TABLE\"\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":"anycompatible"},{"label":"Right operand","value":"anycompatiblearray"},{"label":"Result type","value":"anycompatiblearray"},{"label":"Implementing function","value":"array_prepend(anycompatible,anycompatiblearray)"},{"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":"anycompatible"},{"label":"右操作数","value":"anycompatiblearray"},{"label":"返回类型","value":"anycompatiblearray"},{"label":"实现函数","value":"array_prepend(anycompatible,anycompatiblearray)"},{"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":"Exact operand/result signature matched","memberships":[],"operator":{"commutator":"","function":"array_prepend(anycompatible,anycompatiblearray)","hash_join":"f","kind":"b","left_type":"anycompatible","merge_join":"f","negator":"","result_type":"anycompatiblearray","right_type":"anycompatiblearray","symbol":"||"},"related":[{"label":"anycompatible data type","url":"/wiki/type/anycompatible/?v=18"},{"label":"anycompatiblearray data type","url":"/wiki/type/anycompatiblearray/?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":["Concatenates an element onto the front of an array (which must be empty or one-dimensional).","3 || ARRAY[4,5,6] → {3,4,5,6}"],"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"}],"sections_zh":[{"paragraphs":["将元素连接到数组的前面（数组必须为空或一维的）。","3 || ARRAY[4,5,6] → {3,4,5,6}"],"title":"英文手册定义"},{"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":"||(anycompatible,anycompatiblearray) → anycompatiblearray","source_oid":"374","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-array.html","path":"functions-array.html","sha256":"d84446981971a18b9bab327f3c737737f8cc290dd9963d1472c7e6cab60bea7c","url":"/docs/18/functions-array.html#ARRAY-OPERATORS-TABLE"}],"tables":[],"tables_zh":[],"zh_from":{"authored_translation":"authored-translation-of-source-description","body_sha256":"8794756be84c1099b1b210c6bb32f73ac68c2d5e3feff03bd93233bca7ae6d9d","kind":"same-version-chinese-manual-with-authored-translation-of-source-description","manual":{"anchor":"ARRAY-OPERATORS-TABLE","build_id":107,"extraction":"concept-introduction","fragment_sha256":"11833a0773d62a98775f804af42de3891fce6334c20ea10c046df39f619a0772","locale":"zh-Hans","page_key":"functions-array.html","source_hash":"a25a0710e8f84e027ef945e85452074399887341e22d79542584f9c646b8f076","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/functions-array.html#ARRAY-OPERATORS-TABLE","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"},{"label":"PostgreSQL 18 English manual: functions-array.html","path":"functions-array.html","sha256":"d84446981971a18b9bab327f3c737737f8cc290dd9963d1472c7e6cab60bea7c","url":"/docs/18/functions-array.html#ARRAY-OPERATORS-TABLE"}]},"MeasuredEvidence":{}},"Text":{"Collection":"operator","Key":"op-7c7c-anycompatible-anycompatiblearray","SourceDatabase":"center","Version":"18","Locale":"en","Title":"||(anycompatible,anycompatiblearray)","Summary":"prepend element onto front of array","BodyHTML":"\u003cp\u003eprepend element onto front of array\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"122fcadd58a67f5214ed3be78dedd5e00f1b469994a235838b35fb1049e3935c","Payload":{"description":["prepend element onto front of array"],"related":[{"label":"anycompatible data type","url":"/wiki/type/anycompatible/?v=18"},{"label":"anycompatiblearray data type","url":"/wiki/type/anycompatiblearray/?v=18"}],"sections":[{"paragraphs":["Concatenates an element onto the front of an array (which must be empty or one-dimensional).","3 || ARRAY[4,5,6] → {3,4,5,6}"],"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":"en","Fallback":false,"Versions":["14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}