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Wiki / Operator Families / BRIN classes

brin/int8_bloom_ops (class)

BRIN operator class for int8; member of integer_bloom_ops.

Reading PostgreSQL 18.6.

Description

BRIN operator class for int8; member of integer_bloom_ops.

Object kind
Operator class
Index AM
BRIN
Input type
int8
Stored key type
int8
Default class
no

Usage

brin/int8_bloom_ops

Operator classes and families

An index definition can specify an operator class for each column of an index.

The operator class identifies the operators to be used by the index for that column. For example, a B-tree index on the type int4 would use the int4_ops class; this operator class includes comparison functions for values of type int4 . In practice the default operator class for the column's data type is usually sufficient. The main reason for having operator classes is that for some data types, there could be more than one meaningful index behavior. For example, we might want to sort a complex-number data type either by absolute value or by real part. We could do this by defining two operator classes for the data type and then selecting the proper class when making an index. The operator class determines the basic sort ordering (which can then be modified by adding sort options COLLATE , ASC / DESC and/or NULLS FIRST / NULLS LAST ).

There are also some built-in operator classes besides the default ones:

Family operator strategies

Operator overloadStrategyPurposeOrdering familyMembership scopeSource description
=(int8,int8)1searchClass input pairequal
=(int2,int2)1searchFamily memberequal
=(int4,int4)1searchFamily memberequal

Family support functions

Support numberLeft typeRight typeFunction signatureResult type
1int8int8brin_bloom_opcinfo(internal)internal
2int8int8brin_bloom_add_value(internal,internal,internal,internal)bool
3int8int8brin_bloom_consistent(internal,internal,internal,int4)bool
4int8int8brin_bloom_union(internal,internal,internal)bool
5int8int8brin_bloom_options(internal)void
11int8int8hashint8(int8)int4
1int2int2brin_bloom_opcinfo(internal)internal
2int2int2brin_bloom_add_value(internal,internal,internal,internal)bool
3int2int2brin_bloom_consistent(internal,internal,internal,int4)bool
4int2int2brin_bloom_union(internal,internal,internal)bool
5int2int2brin_bloom_options(internal)void
11int2int2hashint2(int2)int4
1int4int4brin_bloom_opcinfo(internal)internal
2int4int4brin_bloom_add_value(internal,internal,internal,internal)bool
3int4int4brin_bloom_consistent(internal,internal,internal,int4)bool
4int4int4brin_bloom_union(internal,internal,internal)bool
5int4int4brin_bloom_options(internal)void
11int4int4hashint4(int4)int4

Classes in this family

Related entries

Documentation and source

Source build
Version
18.6
Build
https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2
Source fingerprint
555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Compare versions

PostgreSQL 13 → 14: added.

--- PostgreSQL 13
+++ PostgreSQL 14
@@ -1 +1,233 @@
-Not recorded in this version
+{
+  "attributes": {
+    "default": "f",
+    "family": "integer_bloom_ops",
+    "input_type": "int8",
+    "key_type": "int8",
+    "method": "brin",
+    "name": "int8_bloom_ops"
+  },
+  "classes": [
+    {
+      "default": "f",
+      "family": "integer_bloom_ops",
+      "input_type": "int2",
+      "key_type": "int2",
+      "method": "brin",
+      "name": "int2_bloom_ops"
+    },
+    {
+      "default": "f",
+      "family": "integer_bloom_ops",
+      "input_type": "int4",
+      "key_type": "int4",
+      "method": "brin",
+      "name": "int4_bloom_ops"
+    },
+    {
+      "default": "f",
+      "family": "integer_bloom_ops",
+      "input_type": "int8",
+      "key_type": "int8",
+      "method": "brin",
+      "name": "int8_bloom_ops"
+    }
+  ],
+  "kind": "class",
+  "operators": [
+    {
+      "family": "integer_bloom_ops",
+      "left_type": "int2",
+      "method": "brin",
+      "operator": "=(int2,int2)",
+      "purpose": "search",
+      "right_type": "int2",
+      "sort_family": "",
+      "strategy": "1"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "left_type": "int4",
+      "method": "brin",
+      "operator": "=(int4,int4)",
+      "purpose": "search",
+      "right_type": "int4",
+      "sort_family": "",
+      "strategy": "1"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "left_type": "int8",
+      "method": "brin",
+      "operator": "=(int8,int8)",
+      "purpose": "search",
+      "right_type": "int8",
+      "sort_family": "",
+      "strategy": "1"
+    }
+  ],
+  "support_functions": [
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_opcinfo(internal)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "1",
+      "result_type": "internal",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_opcinfo(internal)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "1",
+      "result_type": "internal",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_opcinfo(internal)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "1",
+      "result_type": "internal",
+      "right_type": "int8"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "hashint2(int2)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "11",
+      "result_type": "int4",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "hashint4(int4)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "11",
+      "result_type": "int4",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "hashint8(int8)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "11",
+      "result_type": "int4",
+      "right_type": "int8"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_add_value(internal,internal,internal,internal)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "2",
+      "result_type": "bool",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_add_value(internal,internal,internal,internal)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "2",
+      "result_type": "bool",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_add_value(internal,internal,internal,internal)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "2",
+      "result_type": "bool",
+      "right_type": "int8"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_consistent(internal,internal,internal,int4)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "3",
+      "result_type": "bool",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_consistent(internal,internal,internal,int4)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "3",
+      "result_type": "bool",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_consistent(internal,internal,internal,int4)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "3",
+      "result_type": "bool",
+      "right_type": "int8"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_union(internal,internal,internal)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "4",
+      "result_type": "bool",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_union(internal,internal,internal)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "4",
+      "result_type": "bool",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_union(internal,internal,internal)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "4",
+      "result_type": "bool",
+      "right_type": "int8"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_options(internal)",
+      "left_type": "int2",
+      "method": "brin",
+      "number": "5",
+      "result_type": "void",
+      "right_type": "int2"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_options(internal)",
+      "left_type": "int4",
+      "method": "brin",
+      "number": "5",
+      "result_type": "void",
+      "right_type": "int4"
+    },
+    {
+      "family": "integer_bloom_ops",
+      "function": "brin_bloom_options(internal)",
+      "left_type": "int8",
+      "method": "brin",
+      "number": "5",
+      "result_type": "void",
+      "right_type": "int8"
+    }
+  ]
+}

Compares recorded interfaces and attributes. Source fingerprints and build metadata are excluded; an absent sample is not proof of the introduction or removal release.

Related entries

Export JSON · Back to Operator Families · Recorded in PostgreSQL 14 through 20; the first sample is not necessarily its introduction.