STATISTICS VIEW · 统计视图

pg_stat_ssl

The pg_stat_ssl view will contain one row per backend or WAL sender process, showing statistics about SSL usage on this connection. It can be joined to pg_stat_activity or pg_stat_replication on the pid column to get more details about the connection.

首次收录 PG 9.5最近收录 PG 19当前字段 8

9.0 9.1 9.2 9.3 9.4 9.5 9.6 10 11 12 13 14 15 16 17 18 19^β3

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_stat_ssl

字段 / COLUMN	类型 / TYPE	说明 / DESCRIPTION
`pid`	`integer`	Process ID of a backend or WAL sender process
`ssl`	`boolean`	True if SSL is used on this connection
`version`	`text`	Version of SSL in use, or NULL if SSL is not in use on this connection
`cipher`	`text`	Name of SSL cipher in use, or NULL if SSL is not in use on this connection
`bits`	`integer`	Number of bits in the encryption algorithm used, or NULL if SSL is not used on this connection
`client_dn`	`text`	Distinguished Name (DN) field from the client certificate used, or NULL if no client certificate was supplied or if SSL is not in use on this connection. This field is truncated if the DN field is longer than NAMEDATALEN (64 characters in a standard build).
`client_serial`	`numeric`	Serial number of the client certificate, or NULL if no client certificate was supplied or if SSL is not in use on this connection. The combination of certificate serial number and certificate issuer uniquely identifies a certificate (unless the issuer erroneously reuses serial numbers).
`issuer_dn`	`text`	DN of the issuer of the client certificate, or NULL if no client certificate was supplied or if SSL is not in use on this connection. This field is truncated like client_dn.

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 / COLUMN	9.0	9.1	9.2	9.3	9.4	9.5	9.6	10	11	12	13	14	15	16	17	18	19
`pid`	–	–	–	–	–
`ssl`	–	–	–	–	–
`version`	–	–	–	–	–
`cipher`	–	–	–	–	–
`bits`	–	–	–	–	–
`compression`	–	–	–	–	–							−	–	–	–	–	–
`clientdn`	–	–	–	–	–					−	–	–	–	–	–	–	–
`client_dn`	–	–	–	–	–	–	–	–	–
`client_serial`	–	–	–	–	–	–	–	–	–
`issuer_dn`	–	–	–	–	–	–	–	–	–

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 14 ← 13

− compression

PostgreSQL 13 ← 12

目录说明更新

PostgreSQL 12 ← 11

+ client_dn+ client_serial+ issuer_dn− clientdn目录说明更新

PostgreSQL 10 ← 9.6

目录说明更新

PostgreSQL 9.6 ← 9.5

目录说明更新

PostgreSQL 9.5 ← 9.4新增目录

+ pid+ ssl+ version+ cipher+ bits+ compression+ clientdn

比较任意两个版本

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。