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Wiki / Operator Families

hash/cid_ops (class)

Hash operator class for cid; member of cid_ops.

Reading PG 18·Select a recorded version

Object kind
Operator class
Index AM
Hash
Input type
cid
Stored key type
Same as input type (catalog zero)
Default class
yes
aliases
cid_ops, hash/cid_ops
classes
map[default:t family:cid_ops family_slug:family-hash-cid_ops input_type:cid key_type:none method:hash name:cid_ops slug:class-hash-cid_ops source_oid:]
operators
map[description:equal family:cid_ops family_slug:family-hash-cid_ops left_type:cid method:hash operator:=(cid,cid) operator_slug:op-3d-cid-cid purpose:search result_type:bool right_type:cid sort_family: sort_family_slug: strategy:1]
signature
hash/cid_ops
source oid
Unknown

Definition PG 18

Hash operator class for cid; member of cid_ops.

Family operator strategies

Operator overloadStrategyPurposeOrdering familyMembership scopeSource description
=(cid,cid)1searchClass input pairequal

Family support functions

Support numberLeft typeRight typeFunction signatureResult type
1cidcidhashcid(cid)int4
2cidcidhashcidextended(cid,int8)int8

Classes in this family

ClassInput typeKey typeDefault
cid_opscidSame as input typeyes

Compare versions

Complete source facts

class

{"default":"t","family":"cid_ops","input_type":"cid","key_type":"none","method":"hash","name":"cid_ops"}

support functions

map[family:cid_ops family_slug:family-hash-cid_ops function:hashcid(cid) left_type:cid method:hash number:1 result_type:int4 right_type:cid], map[family:cid_ops family_slug:family-hash-cid_ops function:hashcidextended(cid,int8) left_type:cid method:hash number:2 result_type:int8 right_type:cid]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f