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PG.CENTER 连接 PostgreSQL 文档、百科与生态知识。由 Pigsty 维护。

Wiki / 运算符

=(oid8,oid8)

equal

当前阅读 PG 20·选择有来源记录的版本

此版本暂无所选语言的定义,以下显示原始英文内容。

Left operand
oid8
Right operand
oid8
Result type
bool
Implementing function
oid8eq(oid8,oid8)
Operator kind
Binary
Hash join candidate
yes
Merge join candidate
yes
aliases
=, =(oid8,oid8)
manual semantics
Source catalog description; no additional matching manual operator definition claimed
signature
=(oid8,oid8) → bool
source oid
6443

版本定义 PG 20

equal

Declared operator-family membership

Index AMFamilyStrategyPurposeOrdering family
B-treeoid8_ops3search
Hashoid8_ops1search

比较版本

完整来源事实

memberships

map[description:equal family:oid8_ops family_slug:family-btree-oid8_ops left_type:oid8 method:btree operator:=(oid8,oid8) operator_slug:op-3d-oid8-oid8 purpose:search result_type:bool right_type:oid8 sort_family: sort_family_slug: strategy:3], map[description:equal family:oid8_ops family_slug:family-hash-oid8_ops left_type:oid8 method:hash operator:=(oid8,oid8) operator_slug:op-3d-oid8-oid8 purpose:search result_type:bool right_type:oid8 sort_family: sort_family_slug: strategy:1]

operator

{"commutator":"=(oid8,oid8)","function":"oid8eq(oid8,oid8)","hash_join":"t","kind":"b","left_type":"oid8","merge_join":"t","negator":"\u003c\u003e(oid8,oid8)","result_type":"bool","right_type":"oid8","symbol":"="}

来源引用

完整定义与证据 JSON

定义来源

center · PostgreSQL 20 · 4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41

正文语言: en · 4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41