brin/uuid_minmax_multi_ops (family)

说明

BRIN 操作符家族 containing 1 classes, 5 operator strategies and 6 support functions in this source build。

对象种类

操作符家族

索引访问方法

BRIN

用法

brin/uuid_minmax_multi_ops

操作符类与家族

一个索引定义可以为索引的每一列指定一个 操作符类 。

操作符类标识该索引在该列上要使用哪些操作符。例如，类型 int4 上的一个 B-树索引会使用 int4_ops 类；这个操作符类包含对 int4 值进行比较所需的函数。实践中，列数据类型的默认操作符类通常已经足够。之所以存在操作符类，主要是因为对某些数据类型来说，可能存在多种有意义的索引行为。例如，我们可能希望按绝对值排序一种复数数据类型，也可能希望按实部排序。我们可以通过为该数据类型定义两个操作符类，并在创建索引时选择合适的那个来做到这一点。操作符类决定了基础排序顺序（之后还可以通过添加排序选项 COLLATE 、 ASC / DESC 和/或 NULLS FIRST / NULLS LAST 来修改）。

除了默认操作符类之外，还有一些内置操作符类：

相关条目

• BRIN 索引访问方法

文档与源码

• Matching PostgreSQL source archive
• PostgreSQL 18 English manual: indexes-opclass.html
• PostgreSQL 18 English manual: catalog-pg-opfamily.html
• PostgreSQL 18 English manual: catalog-pg-amop.html
• PostgreSQL 18 English manual: catalog-pg-amproc.html

版本比较

PostgreSQL 13 → 14: 新增收录。

以下差异保留原始字段名与英文源描述。

--- PostgreSQL 13
+++ PostgreSQL 14
@@ -1 +1,125 @@
-该版未收录
+{
+  "attributes": {
+    "method": "brin",
+    "name": "uuid_minmax_multi_ops"
+  },
+  "classes": [
+    {
+      "default": "f",
+      "family": "uuid_minmax_multi_ops",
+      "input_type": "uuid",
+      "key_type": "uuid",
+      "method": "brin",
+      "name": "uuid_minmax_multi_ops"
+    }
+  ],
+  "kind": "family",
+  "operators": [
+    {
+      "family": "uuid_minmax_multi_ops",
+      "left_type": "uuid",
+      "method": "brin",
+      "operator": "<(uuid,uuid)",
+      "purpose": "search",
+      "right_type": "uuid",
+      "sort_family": "",
+      "strategy": "1"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "left_type": "uuid",
+      "method": "brin",
+      "operator": "<=(uuid,uuid)",
+      "purpose": "search",
+      "right_type": "uuid",
+      "sort_family": "",
+      "strategy": "2"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "left_type": "uuid",
+      "method": "brin",
+      "operator": "=(uuid,uuid)",
+      "purpose": "search",
+      "right_type": "uuid",
+      "sort_family": "",
+      "strategy": "3"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "left_type": "uuid",
+      "method": "brin",
+      "operator": ">=(uuid,uuid)",
+      "purpose": "search",
+      "right_type": "uuid",
+      "sort_family": "",
+      "strategy": "4"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "left_type": "uuid",
+      "method": "brin",
+      "operator": ">(uuid,uuid)",
+      "purpose": "search",
+      "right_type": "uuid",
+      "sort_family": "",
+      "strategy": "5"
+    }
+  ],
+  "support_functions": [
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_opcinfo(internal)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "1",
+      "result_type": "internal",
+      "right_type": "uuid"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_distance_uuid(internal,internal)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "11",
+      "result_type": "float8",
+      "right_type": "uuid"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_add_value(internal,internal,internal,internal)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "2",
+      "result_type": "bool",
+      "right_type": "uuid"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_consistent(internal,internal,internal,int4)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "3",
+      "result_type": "bool",
+      "right_type": "uuid"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_union(internal,internal,internal)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "4",
+      "result_type": "bool",
+      "right_type": "uuid"
+    },
+    {
+      "family": "uuid_minmax_multi_ops",
+      "function": "brin_minmax_multi_options(internal)",
+      "left_type": "uuid",
+      "method": "brin",
+      "number": "5",
+      "result_type": "void",
+      "right_type": "uuid"
+    }
+  ]
+}

比较已记录的接口与属性，排除来源指纹和构建元数据。某个样本中没有记录，不能据此判断实际引入或移除的版本。

相关条目

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• brin/box_inclusion_ops (family)
• brin/bpchar_bloom_ops (family)
• brin/bpchar_minmax_ops (family)
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• brin/bytea_minmax_ops (family)
• brin/char_bloom_ops (family)
• brin/char_minmax_ops (family)
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• brin/datetime_minmax_multi_ops (family)
• brin/datetime_minmax_ops (family)
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