pg_relusage

打印查询引用的表与列

概览

扩展包名	版本	分类	许可证	语言
`pg_relusage`	`0.0.1`	STAT	PostgreSQL	C

ID	扩展名	Bin	Lib	Load	Create	Trust	Reloc	模式
6850	`pg_relusage`	否	是	是	否	否	否	-

相关扩展	`pg_qualstats` `online_advisor` `hypopg` `pg_stat_statements` `index_advisor` `pg_stat_plans` `pg_upless` `pg_hint_plan` `pg_track_optimizer` `plan_filter`

版本

类型	仓库	版本	PG 大版本	包名	依赖
EXT	PIGSTY	`0.0.1`	1817161514	`pg_relusage`	-
RPM	PIGSTY	`0.0.1`	1817161514	`pg_relusage_$v`	-
DEB	PIGSTY	`0.0.1`	1817161514	`postgresql-$v-pg-relusage`	-

OS / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 0.0.1 el8.x86_64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el8.x86_64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el8.x86_64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el8.x86_64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el8.x86_64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB
el8.aarch64	PIGSTY 0.0.1 el8.aarch64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.0.1 · 13.5KiB	PIGSTY 0.0.1 el8.aarch64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.0.1 · 13.5KiB	PIGSTY 0.0.1 el8.aarch64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.0.1 · 13.5KiB	PIGSTY 0.0.1 el8.aarch64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.0.1 · 13.5KiB	PIGSTY 0.0.1 el8.aarch64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.0.1 · 13.5KiB
el9.x86_64	PIGSTY 0.0.1 el9.x86_64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.0.1 · 13.0KiB	PIGSTY 0.0.1 el9.x86_64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el9.x86_64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el9.x86_64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el9.x86_64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB
el9.aarch64	PIGSTY 0.0.1 el9.aarch64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.0.1 · 13.2KiB	PIGSTY 0.0.1 el9.aarch64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.0.1 · 13.3KiB	PIGSTY 0.0.1 el9.aarch64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.0.1 · 13.3KiB	PIGSTY 0.0.1 el9.aarch64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.0.1 · 13.3KiB	PIGSTY 0.0.1 el9.aarch64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.0.1 · 13.3KiB
el10.x86_64	PIGSTY 0.0.1 el10.x86_64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.0.1 · 13.0KiB	PIGSTY 0.0.1 el10.x86_64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el10.x86_64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el10.x86_64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB	PIGSTY 0.0.1 el10.x86_64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.0.1 · 13.1KiB
el10.aarch64	PIGSTY 0.0.1 el10.aarch64.pg18 : pg_relusage_18 pg_relusage_18-0.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.0.1 · 13.4KiB	PIGSTY 0.0.1 el10.aarch64.pg17 : pg_relusage_17 pg_relusage_17-0.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.0.1 · 13.4KiB	PIGSTY 0.0.1 el10.aarch64.pg16 : pg_relusage_16 pg_relusage_16-0.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.0.1 · 13.4KiB	PIGSTY 0.0.1 el10.aarch64.pg15 : pg_relusage_15 pg_relusage_15-0.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.0.1 · 13.4KiB	PIGSTY 0.0.1 el10.aarch64.pg14 : pg_relusage_14 pg_relusage_14-0.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.0.1 · 13.4KiB
d12.x86_64	PIGSTY 0.0.1 d12.x86_64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.x86_64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.0.1 · 12.0KiB	PIGSTY 0.0.1 d12.x86_64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.x86_64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.x86_64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.0.1 · 12.0KiB
d12.aarch64	PIGSTY 0.0.1 d12.aarch64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.aarch64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.aarch64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.aarch64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d12.aarch64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.0.1 · 12.1KiB
d13.x86_64	PIGSTY 0.0.1 d13.x86_64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d13.x86_64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.0.1 · 12.0KiB	PIGSTY 0.0.1 d13.x86_64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.0.1 · 12.0KiB	PIGSTY 0.0.1 d13.x86_64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.0.1 · 12.0KiB	PIGSTY 0.0.1 d13.x86_64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.0.1 · 12.0KiB
d13.aarch64	PIGSTY 0.0.1 d13.aarch64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d13.aarch64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d13.aarch64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.0.1 · 12.1KiB	PIGSTY 0.0.1 d13.aarch64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.0.1 · 12.2KiB	PIGSTY 0.0.1 d13.aarch64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.0.1 · 12.1KiB
u22.x86_64	PIGSTY 0.0.1 u22.x86_64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.0.1 · 12.4KiB	PIGSTY 0.0.1 u22.x86_64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.0.1 · 14.6KiB	PIGSTY 0.0.1 u22.x86_64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.0.1 · 14.5KiB	PIGSTY 0.0.1 u22.x86_64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.0.1 · 14.5KiB	PIGSTY 0.0.1 u22.x86_64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.0.1 · 14.5KiB
u22.aarch64	PIGSTY 0.0.1 u22.aarch64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.0.1 · 12.4KiB	PIGSTY 0.0.1 u22.aarch64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.0.1 · 14.6KiB	PIGSTY 0.0.1 u22.aarch64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.0.1 · 14.6KiB	PIGSTY 0.0.1 u22.aarch64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.0.1 · 14.6KiB	PIGSTY 0.0.1 u22.aarch64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.0.1 · 14.6KiB
u24.x86_64	PIGSTY 0.0.1 u24.x86_64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.x86_64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.x86_64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.x86_64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.x86_64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.0.1 · 12.6KiB
u24.aarch64	PIGSTY 0.0.1 u24.aarch64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.0.1 · 12.5KiB	PIGSTY 0.0.1 u24.aarch64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.aarch64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.0.1 · 12.5KiB	PIGSTY 0.0.1 u24.aarch64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u24.aarch64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.0.1 · 12.5KiB
u26.x86_64	PIGSTY 0.0.1 u26.x86_64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.0.1 · 12.7KiB	PIGSTY 0.0.1 u26.x86_64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.0.1 · 12.7KiB	PIGSTY 0.0.1 u26.x86_64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.0.1 · 12.7KiB	PIGSTY 0.0.1 u26.x86_64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.0.1 · 12.7KiB	PIGSTY 0.0.1 u26.x86_64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.0.1 · 12.7KiB
u26.aarch64	PIGSTY 0.0.1 u26.aarch64.pg18 : postgresql-18-pg-relusage postgresql-18-pg-relusage_0.0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.0.1 · 12.5KiB	PIGSTY 0.0.1 u26.aarch64.pg17 : postgresql-17-pg-relusage postgresql-17-pg-relusage_0.0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u26.aarch64.pg16 : postgresql-16-pg-relusage postgresql-16-pg-relusage_0.0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u26.aarch64.pg15 : postgresql-15-pg-relusage postgresql-15-pg-relusage_0.0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.0.1 · 12.6KiB	PIGSTY 0.0.1 u26.aarch64.pg14 : postgresql-14-pg-relusage postgresql-14-pg-relusage_0.0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.0.1 · 12.5KiB

构建

您可以使用 pig build 命令构建 pg_relusage 扩展的 RPM / DEB 包：

BASH

pig build pkg pg_relusage         # 构建 RPM / DEB 包

安装

您可以直接安装 pg_relusage 扩展包的预置二进制包，首先确保 PGDG 和 PIGSTY 仓库已经添加并启用：

BASH

pig repo add pgsql -u          # 添加仓库并更新缓存

使用 pig 或者是 apt/yum/dnf 安装扩展：

安装

BASH

pig install pg_relusage;          # 当前活跃 PG 版本安装

pig

BASH

pig ext install -y pg_relusage -v 18  # PG 18
pig ext install -y pg_relusage -v 17  # PG 17
pig ext install -y pg_relusage -v 16  # PG 16
pig ext install -y pg_relusage -v 15  # PG 15
pig ext install -y pg_relusage -v 14  # PG 14

dnf

BASH

dnf install -y pg_relusage_18       # PG 18
dnf install -y pg_relusage_17       # PG 17
dnf install -y pg_relusage_16       # PG 16
dnf install -y pg_relusage_15       # PG 15
dnf install -y pg_relusage_14       # PG 14

apt

BASH

apt install -y postgresql-18-pg-relusage   # PG 18
apt install -y postgresql-17-pg-relusage   # PG 17
apt install -y postgresql-16-pg-relusage   # PG 16
apt install -y postgresql-15-pg-relusage   # PG 15
apt install -y postgresql-14-pg-relusage   # PG 14

预加载配置：

BASH

shared_preload_libraries = 'pg_relusage';

用法

pg_relusage: 记录 SQL 语句实际使用的关系

pg_relusage 挂钩到查询执行器，记录每个 SQL 语句实际使用的关系（表、视图、索引等）。与语句日志不同，它在视图展开和未使用的连接消除之后报告关系。

工作原理

加载后，每个 SQL 语句会产生一条列出所有引用关系的日志消息：

SQL

SELECT * FROM pg_stats LIMIT 1;

产生日志输出：

relations used: pg_stats,pg_statistic,pg_class,pg_attribute,pg_namespace

加载

SQL

-- 按会话加载
LOAD 'pg_relusage';

-- 或在 postgresql.conf 中全局配置
shared_preload_libraries = 'pg_relusage'

配置

参数	默认值	描述
`pg_relusage.log_level`	`LOG`	关系消息的日志级别
`pg_relusage.rel_kinds`	`'riSvmfp'`	要报告的关系类型（来自 `pg_class.relkind` 的单字母代码）

关系类型代码：r = 表，i = 索引，S = 序列，v = 视图，m = 物化视图，f = 外部表，p = 分区表。

使用场景

该扩展适用于发现遗留数据库中未使用的对象。通过分析一段时间内记录的关系使用情况，可以识别应用程序实际访问了哪些表、视图和索引。

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