btree/bpchar_ops (class)

B-tree operator class for bpchar; member of bpchar_ops.

当前阅读 PG 18·选择有来源记录的版本

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Object kind: Operator class
Index AM: B-tree
Input type: bpchar
Stored key type: Same as input type (catalog zero)
Default class: yes
aliases: bpchar_ops, btree/bpchar_ops
classes: map[default:t family:bpchar_ops family_slug:family-btree-bpchar_ops input_type:bpchar key_type:none method:btree name:bpchar_ops slug:class-btree-bpchar_ops source_oid:]
signature: btree/bpchar_ops
source oid: 未知

版本定义 PG 18

B-tree operator class for bpchar; member of bpchar_ops.

Family operator strategies

Operator overload	Strategy	Purpose	Membership scope	Source description
<(bpchar,bpchar)	1	search	Class input pair	less than
<=(bpchar,bpchar)	2	search	Class input pair	less than or equal
=(bpchar,bpchar)	3	search	Class input pair	equal
>=(bpchar,bpchar)	4	search	Class input pair	greater than or equal
>(bpchar,bpchar)	5	search	Class input pair	greater than

Family support functions

Support number	Left type	Right type	Function signature	Result type
1	bpchar	bpchar	bpcharcmp(bpchar,bpchar)	int4
2	bpchar	bpchar	bpchar_sortsupport(internal)	void
4	bpchar	bpchar	btvarstrequalimage(oid)	bool

Classes in this family

Class	Input type	Key type	Default
bpchar_ops	bpchar	Same as input type	yes

比较版本

完整来源事实

class

{"default":"t","family":"bpchar_ops","input_type":"bpchar","key_type":"none","method":"btree","name":"bpchar_ops"}

operators

map[description:less than family:bpchar_ops family_slug:family-btree-bpchar_ops left_type:bpchar method:btree operator:<(bpchar,bpchar) operator_slug:op-3c-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:1], map[description:less than or equal family:bpchar_ops family_slug:family-btree-bpchar_ops left_type:bpchar method:btree operator:<=(bpchar,bpchar) operator_slug:op-3c3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:2], 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:greater than or equal family:bpchar_ops family_slug:family-btree-bpchar_ops left_type:bpchar method:btree operator:>=(bpchar,bpchar) operator_slug:op-3e3d-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:4], map[description:greater than family:bpchar_ops family_slug:family-btree-bpchar_ops left_type:bpchar method:btree operator:>(bpchar,bpchar) operator_slug:op-3e-bpchar-bpchar purpose:search result_type:bool right_type:bpchar sort_family: sort_family_slug: strategy:5]

support functions

map[family:bpchar_ops family_slug:family-btree-bpchar_ops function:bpcharcmp(bpchar,bpchar) left_type:bpchar method:btree number:1 result_type:int4 right_type:bpchar], map[family:bpchar_ops family_slug:family-btree-bpchar_ops function:bpchar_sortsupport(internal) left_type:bpchar method:btree number:2 result_type:void right_type:bpchar], map[family:bpchar_ops family_slug:family-btree-bpchar_ops function:btvarstrequalimage(oid) left_type:bpchar method:btree number:4 result_type:bool right_type:bpchar]

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