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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

=(xid,xid)

equal

当前阅读 PG 18·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
xid
Right operand
xid
Result type
bool
Implementing function
xideq(xid,xid)
Operator kind
Binary
Hash join candidate
yes
Merge join candidate
no
aliases
=, =(xid,xid)
manual semantics
Source catalog description; no additional matching manual operator definition claimed
memberships
map[description:equal family:xid_ops family_slug:family-hash-xid_ops left_type:xid method:hash operator:=(xid,xid) operator_slug:op-3d-xid-xid purpose:search result_type:bool right_type:xid sort_family: sort_family_slug: strategy:1]
signature
=(xid,xid) → bool
source oid
352

版本定义 PG 18

equal

Declared operator-family membership

Index AMFamilyStrategyPurposeOrdering family
Hashxid_ops1search

比较版本

完整来源事实

operator

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

来源引用

完整定义与证据 JSON

定义来源

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

正文语言: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f