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SYSTEM VIEW · 系统视图

pg_policies

PostgreSQL 官方文档 ↗

The view pg_policies provides access to useful information about each row-level security policy in the database.

首次收录 PG 9.5最近收录 PG 19当前字段 8
9.09.19.29.39.49.59.610111213141516171819β3

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_policies
字段 / COLUMN类型 / TYPE说明 / DESCRIPTION
schemaname name Name of schema containing table policy is on引用：pg_namespace.nspname
tablename name Name of table policy is on引用：pg_class.relname
policyname name Name of policy引用：pg_policy.polname
permissive text Is the policy permissive or restrictive?
roles name[] The roles to which this policy applies
cmd text The command type to which the policy is applied
qual text The expression added to the security barrier qualifications for queries that this policy applies to
with_check text The expression added to the WITH CHECK qualifications for queries that attempt to add rows to this table

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。

字段演化矩阵

悬停查看字段类型
存在新增 / 类型或属性变化移除
字段 / COLUMN9.09.19.29.39.49.59.610111213141516171819
schemaname – – – – –
tablename – – – – –
policyname – – – – –
roles – – – – –
cmd – – – – –
qual – – – – –
with_check – – – – –
permissive – – – – – – –

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。

演化时间线

相邻大版本的变化

PostgreSQL 10 ← 9.6

+ permissive

PostgreSQL 9.5 ← 9.4新增目录

+ schemaname+ tablename+ policyname+ roles+ cmd+ qual+ with_check

比较任意两个版本

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。