{"Entry":{"collection":"operator","key":"op-2b-interval-timestamp","name":"+(interval,timestamp)","aliases":["+","+(interval,timestamp)"],"metadata":{"aliases":["+","+(interval,timestamp)"],"category":"Date and time","content_hash":"cffb41cf699a1ae71b73691bf6c984413c7b40bfadcf1fbc30bb7ed2fd45aaad","derived_content_hash":"ec8a7955ca55279af03a988d5b32fefb839311ae79d70698bb8d9b2dad48a76c","imported_at":"2026-09-30T00:40:40.777564+08:00","name":"+(interval,timestamp)","name_zh":"","slug":"op-2b-interval-timestamp","summary":"add"}},"Definition":{"Collection":"operator","Key":"op-2b-interval-timestamp","SourceDatabase":"center","Version":"18","SourceTable":"pg_operator_entry","SourceKey":"op-2b-interval-timestamp","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"aliases":["+","+(interval,timestamp)"],"comparison_data":{"memberships":[],"operator":{"commutator":"+(timestamp,interval)","function":"interval_pl_timestamp(interval,timestamp)","hash_join":"f","kind":"b","left_type":"interval","merge_join":"f","negator":"","result_type":"timestamp","right_type":"timestamp","symbol":"+"}},"comparison_hash":"b24bb4ea982bde43f5c008f9bdb26ce12091a601d08da71cb860f2c9370aaf23","description":["add"],"description_zh":"相加。","description_zh_html":"\u003cp\u003e相加。\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\u003einterval_pl_timestamp(interval,timestamp)\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\u003einterval\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e交换运算符\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003e+(timestamp,interval)\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\u003etimestamp\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e结果类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003etimestamp\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":"interval"},{"label":"Right operand","value":"timestamp"},{"label":"Result type","value":"timestamp"},{"label":"Implementing function","value":"interval_pl_timestamp(interval,timestamp)"},{"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":"interval"},{"label":"右操作数","value":"timestamp"},{"label":"返回类型","value":"timestamp"},{"label":"实现函数","value":"interval_pl_timestamp(interval,timestamp)"},{"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":"+(timestamp,interval)","function":"interval_pl_timestamp(interval,timestamp)","hash_join":"f","kind":"b","left_type":"interval","merge_join":"f","negator":"","result_type":"timestamp","right_type":"timestamp","symbol":"+"},"related":[{"label":"interval data type","url":"/wiki/type/interval/?v=18"},{"label":"timestamp data type","url":"/wiki/type/timestamp/?v=18"},{"label":"Commutator: +(timestamp,interval)","url":"/wiki/operator/op-2b-timestamp-interval/?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. 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