pre_prepare

在服务端预先准备好PreparedStatement备用

概览

扩展包名	版本	分类	许可证	语言
`preprepare`	`0.9`	ADMIN	PostgreSQL	C

ID	扩展名	Bin	Lib	Load	Create	Trust	Reloc	模式
5170	`pre_prepare`	否	是	否	是	否	是	-

相关扩展	`pg_hint_plan` `plan_filter` `pg_query_rewrite` `hypopg` `pg_qualstats` `index_advisor` `online_advisor` `pg_stat_plans` `pg_kpart` `pg_fsql`

版本

类型	仓库	版本	PG 大版本	包名	依赖
EXT	MIXED	`0.9`	1817161514	`preprepare`	-
RPM	PIGSTY	`0.9`	1817161514	`preprepare_$v`	-
DEB	PGDG	`0.9`	1817161514	`postgresql-$v-preprepare`	-

OS / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 0.9 el8.x86_64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el8.x86_64.rpm PIGSTY · 0.9 · 13.4KiB	PIGSTY 0.9 el8.x86_64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el8.x86_64.rpm PIGSTY · 0.9 · 13.4KiB	PIGSTY 0.9 el8.x86_64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el8.x86_64.rpm PIGSTY · 0.9 · 13.4KiB	PIGSTY 0.9 el8.x86_64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el8.x86_64.rpm PIGSTY · 0.9 · 13.4KiB	PIGSTY 0.9 el8.x86_64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el8.x86_64.rpm PIGSTY · 0.9 · 13.4KiB
el8.aarch64	PIGSTY 0.9 el8.aarch64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el8.aarch64.rpm PIGSTY · 0.9 · 13.6KiB	PIGSTY 0.9 el8.aarch64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el8.aarch64.rpm PIGSTY · 0.9 · 13.6KiB	PIGSTY 0.9 el8.aarch64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el8.aarch64.rpm PIGSTY · 0.9 · 13.6KiB	PIGSTY 0.9 el8.aarch64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el8.aarch64.rpm PIGSTY · 0.9 · 13.6KiB	PIGSTY 0.9 el8.aarch64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el8.aarch64.rpm PIGSTY · 0.9 · 13.6KiB
el9.x86_64	PIGSTY 0.9 el9.x86_64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el9.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.x86_64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el9.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.x86_64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el9.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.x86_64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el9.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.x86_64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el9.x86_64.rpm PIGSTY · 0.9 · 13.3KiB
el9.aarch64	PIGSTY 0.9 el9.aarch64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el9.aarch64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.aarch64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el9.aarch64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.aarch64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el9.aarch64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.aarch64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el9.aarch64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el9.aarch64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el9.aarch64.rpm PIGSTY · 0.9 · 13.3KiB
el10.x86_64	PIGSTY 0.9 el10.x86_64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el10.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el10.x86_64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el10.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el10.x86_64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el10.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el10.x86_64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el10.x86_64.rpm PIGSTY · 0.9 · 13.3KiB	PIGSTY 0.9 el10.x86_64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el10.x86_64.rpm PIGSTY · 0.9 · 13.3KiB
el10.aarch64	PIGSTY 0.9 el10.aarch64.pg18 : preprepare_18 preprepare_18-0.9-2PGSTY.el10.aarch64.rpm PIGSTY · 0.9 · 13.5KiB	PIGSTY 0.9 el10.aarch64.pg17 : preprepare_17 preprepare_17-0.9-2PGSTY.el10.aarch64.rpm PIGSTY · 0.9 · 13.5KiB	PIGSTY 0.9 el10.aarch64.pg16 : preprepare_16 preprepare_16-0.9-2PGSTY.el10.aarch64.rpm PIGSTY · 0.9 · 13.5KiB	PIGSTY 0.9 el10.aarch64.pg15 : preprepare_15 preprepare_15-0.9-2PGSTY.el10.aarch64.rpm PIGSTY · 0.9 · 13.5KiB	PIGSTY 0.9 el10.aarch64.pg14 : preprepare_14 preprepare_14-0.9-2PGSTY.el10.aarch64.rpm PIGSTY · 0.9 · 13.5KiB
d12.x86_64	PGDG 0.9 d12.x86_64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg12+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.x86_64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg12+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.x86_64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg12+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.x86_64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg12+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.x86_64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg12+1_amd64.deb PGDG · 0.9 · 16.7KiB
d12.aarch64	PGDG 0.9 d12.aarch64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg12+1_arm64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.aarch64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg12+1_arm64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.aarch64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg12+1_arm64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.aarch64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg12+1_arm64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d12.aarch64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg12+1_arm64.deb PGDG · 0.9 · 16.8KiB
d13.x86_64	PGDG 0.9 d13.x86_64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg13+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d13.x86_64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg13+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d13.x86_64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg13+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d13.x86_64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg13+1_amd64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d13.x86_64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg13+1_amd64.deb PGDG · 0.9 · 16.7KiB
d13.aarch64	PGDG 0.9 d13.aarch64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg13+1_arm64.deb PGDG · 0.9 · 16.9KiB	PGDG 0.9 d13.aarch64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg13+1_arm64.deb PGDG · 0.9 · 16.9KiB	PGDG 0.9 d13.aarch64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg13+1_arm64.deb PGDG · 0.9 · 16.8KiB	PGDG 0.9 d13.aarch64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg13+1_arm64.deb PGDG · 0.9 · 16.9KiB	PGDG 0.9 d13.aarch64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg13+1_arm64.deb PGDG · 0.9 · 16.8KiB
u22.x86_64	PGDG 0.9 u22.x86_64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg22.04+1_amd64.deb PGDG · 0.9 · 17.3KiB	PGDG 0.9 u22.x86_64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg22.04+1_amd64.deb PGDG · 0.9 · 18.2KiB	PGDG 0.9 u22.x86_64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg22.04+1_amd64.deb PGDG · 0.9 · 18.2KiB	PGDG 0.9 u22.x86_64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg22.04+1_amd64.deb PGDG · 0.9 · 18.1KiB	PGDG 0.9 u22.x86_64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg22.04+1_amd64.deb PGDG · 0.9 · 18.1KiB
u22.aarch64	PGDG 0.9 u22.aarch64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg22.04+1_arm64.deb PGDG · 0.9 · 17.3KiB	PGDG 0.9 u22.aarch64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg22.04+1_arm64.deb PGDG · 0.9 · 18.1KiB	PGDG 0.9 u22.aarch64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg22.04+1_arm64.deb PGDG · 0.9 · 18.2KiB	PGDG 0.9 u22.aarch64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg22.04+1_arm64.deb PGDG · 0.9 · 18.1KiB	PGDG 0.9 u22.aarch64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg22.04+1_arm64.deb PGDG · 0.9 · 18.1KiB
u24.x86_64	PGDG 0.9 u24.x86_64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg24.04+1_amd64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.x86_64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg24.04+1_amd64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.x86_64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg24.04+1_amd64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.x86_64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg24.04+1_amd64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.x86_64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg24.04+1_amd64.deb PGDG · 0.9 · 16.3KiB
u24.aarch64	PGDG 0.9 u24.aarch64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg24.04+1_arm64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.aarch64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg24.04+1_arm64.deb PGDG · 0.9 · 16.3KiB	PGDG 0.9 u24.aarch64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg24.04+1_arm64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.aarch64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg24.04+1_arm64.deb PGDG · 0.9 · 16.4KiB	PGDG 0.9 u24.aarch64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg24.04+1_arm64.deb PGDG · 0.9 · 16.3KiB
u26.x86_64	PGDG 0.9 u26.x86_64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg26.04+1_amd64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.x86_64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg26.04+1_amd64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.x86_64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg26.04+1_amd64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.x86_64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg26.04+1_amd64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.x86_64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg26.04+1_amd64.deb PGDG · 0.9 · 16.5KiB
u26.aarch64	PGDG 0.9 u26.aarch64.pg18 : postgresql-18-preprepare postgresql-18-preprepare_0.9-10.pgdg26.04+1_arm64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.aarch64.pg17 : postgresql-17-preprepare postgresql-17-preprepare_0.9-10.pgdg26.04+1_arm64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.aarch64.pg16 : postgresql-16-preprepare postgresql-16-preprepare_0.9-10.pgdg26.04+1_arm64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.aarch64.pg15 : postgresql-15-preprepare postgresql-15-preprepare_0.9-10.pgdg26.04+1_arm64.deb PGDG · 0.9 · 16.5KiB	PGDG 0.9 u26.aarch64.pg14 : postgresql-14-preprepare postgresql-14-preprepare_0.9-10.pgdg26.04+1_arm64.deb PGDG · 0.9 · 16.5KiB

构建

您可以使用 pig build 命令构建 preprepare 扩展的 RPM 包：

BASH

pig build pkg preprepare         # 构建 RPM 包

安装

您可以直接安装 preprepare 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 preprepare;          # 当前活跃 PG 版本安装

pig

BASH

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

dnf

BASH

dnf install -y preprepare_18       # PG 18
dnf install -y preprepare_17       # PG 17
dnf install -y preprepare_16       # PG 16
dnf install -y preprepare_15       # PG 15
dnf install -y preprepare_14       # PG 14

apt

BASH

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

创建扩展：

SQL

CREATE EXTENSION pre_prepare;

用法

pre_prepare: 在服务器端预准备你的语句

pre_prepare 在连接建立时自动准备 SQL 语句，使客户端可以直接使用 EXECUTE 而无需先调用 PREPARE。

设置

在 postgresql.conf 中配置：

preprepare.relation = 'preprepare.statements'
preprepare.at_init = on    -- 连接时自动准备（需要 local_preload_libraries）

创建存储语句的表：

SQL

CREATE TABLE preprepare.statements (name text PRIMARY KEY, statement text);

插入语句（包含完整的 PREPARE 语法）：

SQL

INSERT INTO preprepare.statements VALUES ('test', 'prepare test as select 1');

函数

prepare_all() – 从配置的关系中准备所有语句：

SQL

SELECT prepare_all();

prepare_all('schema.table') – 从指定表准备语句：

SQL

SELECT prepare_all('public.expensive_planning');

discard() – 类似 DISCARD ALL 但不执行 DEALLOCATE ALL（保留已准备的语句）：

SQL

SELECT discard();

配合 PgBouncer 使用

设置 connect_query 在每次服务器连接时自动准备：

INI

[databases]
foo = port=5432 connect_query='SELECT prepare_all();'

避免使用 DISCARD ALL 作为 reset_query（它会释放已准备的语句）。

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