SYSTEM CATALOG · 系统目录

pg_range

The catalog pg_range stores information about range types. This is in addition to the types' entries in pg_type.

首次收录 PG 9.2最近收录 PG 19当前字段 7

已与 PostgreSQL 18.6 实例逐字段核对 · 原始实测记录 ↗

字段结构 PostgreSQL 18

pg_range

字段 / COLUMN	类型 / TYPE	说明 / DESCRIPTION
`rngtypid`	`oid`NOT NULL	OID of the range type引用：`pg_type.oid`
`rngsubtype`	`oid`NOT NULL	OID of the element type (subtype) of this range type引用：`pg_type.oid`
`rngmultitypid`	`oid`NOT NULL	OID of the multirange type for this range type引用：`pg_type.oid`
`rngcollation`	`oid`NOT NULL	OID of the collation used for range comparisons, or zero if none引用：`pg_collation.oid`
`rngsubopc`	`oid`NOT NULL	OID of the subtype's operator class used for range comparisons引用：`pg_opclass.oid`
`rngcanonical`	`regproc`NOT NULL	OID of the function to convert a range value into canonical form, or zero if none引用：`pg_proc.oid`
`rngsubdiff`	`regproc`NOT NULL	OID of the function to return the difference between two element values as double precision, or zero if none引用：`pg_proc.oid`

标记“隐式列”的字段不包含在 SELECT * 中；部分早期统计视图由同版本源码补全，额外来源会显示在字段说明中。

通用系统列 6

PostgreSQL 提供的系统属性，通常不在 SELECT * 中展开。单独保留，不与普通字段混算。

悬停查看字段类型

存在新增 / 类型或属性变化移除

字段 / COLUMN	9.0	9.1	9.2	9.3	9.4	9.5	9.6	10	11	12	13	14	15	16	17	18
`rngtypid`	–	–
`rngsubtype`	–	–
`rngcollation`	–	–
`rngsubopc`	–	–
`rngcanonical`	–	–
`rngsubdiff`	–	–
`rngmultitypid`	–	–	–	–	–	–	–	–	–	–	–
`rngconstruct2`	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
`rngconstruct3`	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
`rngmltconstruct0`	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
`rngmltconstruct1`	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
`rngmltconstruct2`	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–

9.0 是收录基线；基线中已存在的字段不标记为新增。矩阵按字段名称对齐，重命名显示为旧字段移除与新字段新增。

相邻大版本的变化

PostgreSQL 19 ← 18

+ rngconstruct2+ rngconstruct3+ rngmltconstruct0+ rngmltconstruct1+ rngmltconstruct2

PostgreSQL 14 ← 13

+ rngmultitypid3 处字段说明更新

PostgreSQL 9.2 ← 9.1新增目录

+ rngtypid+ rngsubtype+ rngcollation+ rngsubopc+ rngcanonical+ rngsubdiff

起始版本 / FROM目标版本 / TO包含描述更新

选择两个版本，查看字段的新增、移除与类型变化。交互比较需要 JavaScript；演化时间线可直接阅读。