spgist/poly_ops (class)

说明

polygon 类型的 SP-GiST 操作符类，属于 poly_ops 家族。

对象种类

操作符类

索引访问方法

SP-GiST

输入类型

polygon

存储键类型

box

默认操作符类

是

用法

spgist/poly_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

• SP-GiST 索引访问方法
• poly_ops 家族
• polygon 数据类型
• box 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 10 → 11: 新增收录。

以下差异保留原始字段名与英文源描述。

--- PostgreSQL 10
+++ PostgreSQL 11
@@ -1 +1,199 @@
-该版未收录
+{
+  "attributes": {
+    "default": "t",
+    "family": "poly_ops",
+    "input_type": "polygon",
+    "key_type": "box",
+    "method": "spgist",
+    "name": "poly_ops"
+  },
+  "classes": [
+    {
+      "default": "t",
+      "family": "poly_ops",
+      "input_type": "polygon",
+      "key_type": "box",
+      "method": "spgist",
+      "name": "poly_ops"
+    }
+  ],
+  "kind": "class",
+  "operators": [
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "<<(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "1"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "<<|(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "10"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "|>>(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "11"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "|&>(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "12"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "&<(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "2"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "&&(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "3"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "&>(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "4"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": ">>(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "5"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "~=(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "6"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "@>(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "7"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "<@(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "8"
+    },
+    {
+      "family": "poly_ops",
+      "left_type": "polygon",
+      "method": "spgist",
+      "operator": "&<|(polygon,polygon)",
+      "purpose": "search",
+      "right_type": "polygon",
+      "sort_family": "",
+      "strategy": "9"
+    }
+  ],
+  "support_functions": [
+    {
+      "family": "poly_ops",
+      "function": "spg_bbox_quad_config(internal,internal)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "1",
+      "result_type": "void",
+      "right_type": "polygon"
+    },
+    {
+      "family": "poly_ops",
+      "function": "spg_box_quad_choose(internal,internal)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "2",
+      "result_type": "void",
+      "right_type": "polygon"
+    },
+    {
+      "family": "poly_ops",
+      "function": "spg_box_quad_picksplit(internal,internal)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "3",
+      "result_type": "void",
+      "right_type": "polygon"
+    },
+    {
+      "family": "poly_ops",
+      "function": "spg_box_quad_inner_consistent(internal,internal)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "4",
+      "result_type": "void",
+      "right_type": "polygon"
+    },
+    {
+      "family": "poly_ops",
+      "function": "spg_box_quad_leaf_consistent(internal,internal)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "5",
+      "result_type": "bool",
+      "right_type": "polygon"
+    },
+    {
+      "family": "poly_ops",
+      "function": "spg_poly_quad_compress(polygon)",
+      "left_type": "polygon",
+      "method": "spgist",
+      "number": "6",
+      "result_type": "box",
+      "right_type": "polygon"
+    }
+  ]
+}

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

• spgist/box_ops (class)
• spgist/inet_ops (class)
• spgist/kd_point_ops (class)
• spgist/quad_point_ops (class)
• spgist/range_ops (class)
• spgist/text_ops (class)