=(bpchar,bpchar)
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
- bpchar
- Right operand
- bpchar
- Result type
- bool
- Implementing function
- bpchareq(bpchar,bpchar)
- Operator kind
- Binary
- Hash join candidate
- yes
- Merge join candidate
- yes
- aliases
- =, =(bpchar,bpchar)
- manual semantics
- Source catalog description; no additional matching manual operator definition claimed
- signature
- =(bpchar,bpchar) → bool
- source oid
- 1054
版本定义 PG 18
equal
Declared operator-family membership
| Index AM | Family | Strategy | Purpose | Ordering family |
|---|---|---|---|---|
| B-tree | bpchar_ops | 3 | search | |
| B-tree | bpchar_pattern_ops | 3 | search | |
| Hash | bpchar_ops | 1 | search | |
| Hash | bpchar_pattern_ops | 1 | search | |
| BRIN | bpchar_minmax_ops | 3 | search | |
| BRIN | bpchar_bloom_ops | 1 | search |
比较版本
完整来源事实
memberships
map[description:equal family:bpchar_ops family_slug:family-btree-bpchar_ops left_type:bpchar method:btree operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:3], map[description:equal family:bpchar_pattern_ops family_slug:family-btree-bpchar_pattern_ops left_type:bpchar method:btree operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:3], map[description:equal family:bpchar_ops family_slug:family-hash-bpchar_ops left_type:bpchar method:hash operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:1], map[description:equal family:bpchar_pattern_ops family_slug:family-hash-bpchar_pattern_ops left_type:bpchar method:hash operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:1], map[description:equal family:bpchar_minmax_ops family_slug:family-brin-bpchar_minmax_ops left_type:bpchar method:brin operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:3], map[description:equal family:bpchar_bloom_ops family_slug:family-brin-bpchar_bloom_ops left_type:bpchar method:brin operator:=(bpchar,bpchar) operator_slug:op-3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:1]
operator
{"commutator":"=(bpchar,bpchar)","function":"bpchareq(bpchar,bpchar)","hash_join":"t","kind":"b","left_type":"bpchar","merge_join":"t","negator":"\u003c\u003e(bpchar,bpchar)","result_type":"bool","right_type":"bpchar","symbol":"="}来源引用
- Matching PostgreSQL source archive
- PostgreSQL 18 English manual: catalog-pg-operator.html
- PostgreSQL 18 English manual: catalog-pg-amop.html
- 固定 PostgreSQL 源码归档
定义来源
center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f
正文语言: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f