pg_store_plans

跟踪所有执行的 SQL 语句的计划统计信息

概览

扩展包名版本分类许可证语言
pg_store_plans1.10STATBSD 3-ClauseC
ID扩展名BinLibLoadCreateTrustReloc模式
6250pg_store_plans-
相关扩展pg_show_plans auto_explain pg_stat_statements pg_hint_plan pre_prepare pg_stat_monitor explain_ui plprofiler

版本

类型仓库版本PG 大版本包名依赖
EXTMIXED1.101817161514pg_store_plans-
RPMPIGSTY1.101817161514pg_store_plans_$v-
DEBPIGSTY1.101817161514postgresql-$v-pg-store-plan-
OS / PGPG18PG17PG16PG15PG14
el8.x86_64
el8.aarch64
PIGSTY 1.10
el9.x86_64
el9.aarch64
PIGSTY 1.10
el10.x86_64
PIGSTY 1.10
el10.aarch64
PIGSTY 1.10
d12.x86_64
d12.aarch64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
d13.x86_64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
d13.aarch64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
u22.x86_64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
u22.aarch64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
u24.x86_64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
u24.aarch64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
u26.x86_64
u26.aarch64
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10
PIGSTY 1.10

构建

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

pig build pkg pg_store_plans         # 构建 RPM / DEB 包

安装

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

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:

pig install pg_store_plans;          # 当前活跃 PG 版本安装
pig ext install -y pg_store_plans -v 18  # PG 18
pig ext install -y pg_store_plans -v 17  # PG 17
pig ext install -y pg_store_plans -v 16  # PG 16
pig ext install -y pg_store_plans -v 15  # PG 15
pig ext install -y pg_store_plans -v 14  # PG 14
dnf install -y pg_store_plans_18       # PG 18
dnf install -y pg_store_plans_17       # PG 17
dnf install -y pg_store_plans_16       # PG 16
dnf install -y pg_store_plans_15       # PG 15
dnf install -y pg_store_plans_14       # PG 14
apt install -y postgresql-18-pg-store-plan   # PG 18
apt install -y postgresql-17-pg-store-plan   # PG 17
apt install -y postgresql-16-pg-store-plan   # PG 16
apt install -y postgresql-15-pg-store-plan   # PG 15
apt install -y postgresql-14-pg-store-plan   # PG 14

预加载配置

shared_preload_libraries = 'pg_store_plans';

创建扩展

CREATE EXTENSION pg_store_plans;

用法

来源:official docsrepo1.10 release notes

pg_store_plans 用于跟踪 SQL 语句的执行计划统计信息,作用类似于 pg_stat_statements 对语句统计的补充。上游 1.10 发布说明指出该版本新增 PostgreSQL 18 支持,其余 SQL 接口与当前文档保持一致。

必要服务器设置

shared_preload_libraries = 'pg_store_plans'
compute_query_id = 'on'

pg_store_plans 需要共享内存,因此增删该扩展都需要重启。文档还说明如果 compute_query_id = 'no',模块会被静默禁用。

查看已存储计划

SELECT queryid, planid, plan, calls, total_time, rows
FROM pg_store_plans
ORDER BY total_time DESC;

SELECT * FROM pg_store_plans_info;

文档将 queryid 作为与 pg_stat_statements 的关联键,并将 pg_store_plans_info 描述为单行视图,用于暴露 deallocstats_reset 等模块级统计。

辅助函数

SELECT pg_store_plans_reset();
SELECT pg_store_hash_query('SELECT 1');
SELECT pg_store_plans_textplan(plan);
SELECT pg_store_plans_jsonplan(plan);
SELECT pg_store_plans_xmlplan(plan);
SELECT pg_store_plans_yamlplan(plan);

pg_store_plans.plan_format = 'raw' 时,pg_store_plans_*plan() 尤其实用。

关键 GUC

  • pg_store_plans.max
  • pg_store_plans.track
  • pg_store_plans.max_plan_length
  • pg_store_plans.plan_storage
  • pg_store_plans.plan_format
  • pg_store_plans.min_duration
  • pg_store_plans.log_analyze
  • pg_store_plans.log_buffers
  • pg_store_plans.log_timing
  • pg_store_plans.save

文档说明 plan_storage 取值为 fileshmemplan_format 取值为 textjsonxmlyamlraw

注意事项

  • 非超级用户不能查看其他用户执行语句对应的 planqueryidplanid
  • pg_store_planspg_stat_statements 独立维护条目,因此低频记录不一定总能在另一侧找到对应行。

最后修改 2026-05-01: update extension data (e399d22)