gist/range_ops (class)

说明

anyrange 类型的 GiST 操作符类，属于 range_ops 家族。

对象种类

操作符类

索引访问方法

GiST

输入类型

anyrange

存储键类型

与输入类型相同（目录值为零）

默认操作符类

是

用法

gist/range_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

• GiST 索引访问方法
• range_ops 家族
• anyrange 数据类型

文档与源码

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

版本比较

PostgreSQL 13 → 14: 属性变化。

以下差异保留原始字段名与英文源描述。

--- PostgreSQL 13
+++ PostgreSQL 14
@@ -33,6 +33,86 @@
       "family": "range_ops",
       "left_type": "anyrange",
       "method": "gist",
+      "operator": "<<(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "1"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "&<(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "2"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "&&(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "3"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "&>(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "4"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": ">>(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "5"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "-|-(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "6"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "@>(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "7"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
+      "operator": "<@(anyrange,anymultirange)",
+      "purpose": "search",
+      "right_type": "anymultirange",
+      "sort_family": "",
+      "strategy": "8"
+    },
+    {
+      "family": "range_ops",
+      "left_type": "anyrange",
+      "method": "gist",
       "operator": "<<(anyrange,anyrange)",
       "purpose": "search",
       "right_type": "anyrange",

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

• gist/box_ops (class)
• gist/circle_ops (class)
• gist/inet_ops (class)
• gist/multirange_ops (class)
• gist/point_ops (class)
• gist/poly_ops (class)
• gist/tsquery_ops (class)
• gist/tsvector_ops (class)