STATISTICS VIEW · 统计视图

pg_stat_xact_sys_tables

Same as pg_stat_xact_all_tables, except that only system tables are shown.

首次收录 PG 9.1最近收录 PG 19当前字段 12

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_xact_sys_tables

字段 / COLUMN	类型 / TYPE	说明 / DESCRIPTION
`relid`	`oid`	OID of a table
`schemaname`	`name`	Name of the schema that this table is in
`relname`	`name`	Name of this table
`seq_scan`	`bigint`	Number of sequential scans initiated on this table This view reports counters for the current transaction.
`seq_tup_read`	`bigint`	Number of live rows fetched by sequential scans This view reports counters for the current transaction.
`idx_scan`	`bigint`	Number of index scans initiated on this table This view reports counters for the current transaction.
`idx_tup_fetch`	`bigint`	Number of live rows fetched by index scans This view reports counters for the current transaction.
`n_tup_ins`	`bigint`	Total number of rows inserted This view reports counters for the current transaction.
`n_tup_upd`	`bigint`	Total number of rows updated. (This includes row updates counted in n_tup_hot_upd and n_tup_newpage_upd, and remaining non-HOT updates.) This view reports counters for the current transaction.
`n_tup_del`	`bigint`	Total number of rows deleted This view reports counters for the current transaction.
`n_tup_hot_upd`	`bigint`	Number of rows HOT updated. These are updates where no successor versions are required in indexes. This view reports counters for the current transaction.
`n_tup_newpage_upd`	`bigint`	Number of rows updated where the successor version goes onto a new heap page, leaving behind an original version with a t_ctid field that points to a different heap page. These are always non-HOT updates. This view reports counters for the current transaction.

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
`relid`	–
`schemaname`	–
`relname`	–
`seq_scan`	–
`seq_tup_read`	–
`idx_scan`	–
`idx_tup_fetch`	–
`n_tup_ins`	–
`n_tup_upd`	–
`n_tup_del`	–
`n_tup_hot_upd`	–
`n_tup_newpage_upd`	–	–	–	–	–	–	–	–	–	–	–	–	–

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 16 ← 15

+ n_tup_newpage_upd4 处字段说明更新

PostgreSQL 9.5 ← 9.4

1 处字段说明更新

PostgreSQL 9.2 ← 9.1

11 处字段说明更新目录说明更新

PostgreSQL 9.1 ← 9.0新增目录

+ relid+ schemaname+ relname+ seq_scan+ seq_tup_read+ idx_scan+ idx_tup_fetch+ n_tup_ins+ n_tup_upd+ n_tup_del+ n_tup_hot_upd

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。