envvar

获取环境变量的函数

概览

扩展包名	版本	分类	许可证	语言
`pg_envvar`	`1.0.1`	UTIL	PostgreSQL	C

ID	扩展名	Bin	Lib	Load	Create	Trust	Reloc	模式
4270	`envvar`	否	是	否	是	否	否	-

相关扩展	`external_file` `fio` `omni_os` `byteamagic` `floatfile` `file_fdw` `basic_archive` `basebackup_to_shell` `aws_s3`

版本

类型	仓库	版本	PG 大版本	包名	依赖
EXT	PIGSTY	`1.0.1`	1817161514	`pg_envvar`	-
RPM	PIGSTY	`1.0.1`	1817161514	`pg_envvar_$v`	-
DEB	PIGSTY	`1.0.1`	1817161514	`postgresql-$v-pg-envvar`	-

OS / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 1.0.1 el8.x86_64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el8.x86_64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el8.x86_64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el8.x86_64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el8.x86_64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB
el8.aarch64	PIGSTY 1.0.1 el8.aarch64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el8.aarch64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el8.aarch64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el8.aarch64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el8.aarch64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB
el9.x86_64	PIGSTY 1.0.1 el9.x86_64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.x86_64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.x86_64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.x86_64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.x86_64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 1.0.1 · 12.5KiB
el9.aarch64	PIGSTY 1.0.1 el9.aarch64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.aarch64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.aarch64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.aarch64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 1.0.1 · 12.5KiB	PIGSTY 1.0.1 el9.aarch64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 1.0.1 · 12.5KiB
el10.x86_64	PIGSTY 1.0.1 el10.x86_64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.x86_64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.x86_64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.x86_64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.x86_64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 1.0.1 · 12.7KiB
el10.aarch64	PIGSTY 1.0.1 el10.aarch64.pg18 : pg_envvar_18 pg_envvar_18-1.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.aarch64.pg17 : pg_envvar_17 pg_envvar_17-1.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.aarch64.pg16 : pg_envvar_16 pg_envvar_16-1.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.aarch64.pg15 : pg_envvar_15 pg_envvar_15-1.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB	PIGSTY 1.0.1 el10.aarch64.pg14 : pg_envvar_14 pg_envvar_14-1.0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 1.0.1 · 12.7KiB
d12.x86_64	PIGSTY 1.0.1 d12.x86_64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~bookworm_amd64.deb PIGSTY · 1.0.1 · 9.4KiB	PIGSTY 1.0.1 d12.x86_64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~bookworm_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d12.x86_64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~bookworm_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d12.x86_64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~bookworm_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d12.x86_64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~bookworm_amd64.deb PIGSTY · 1.0.1 · 9.3KiB
d12.aarch64	PIGSTY 1.0.1 d12.aarch64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~bookworm_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d12.aarch64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~bookworm_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d12.aarch64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~bookworm_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d12.aarch64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~bookworm_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d12.aarch64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~bookworm_arm64.deb PIGSTY · 1.0.1 · 9.6KiB
d13.x86_64	PIGSTY 1.0.1 d13.x86_64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~trixie_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d13.x86_64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~trixie_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d13.x86_64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~trixie_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d13.x86_64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~trixie_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 d13.x86_64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~trixie_amd64.deb PIGSTY · 1.0.1 · 9.3KiB
d13.aarch64	PIGSTY 1.0.1 d13.aarch64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~trixie_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d13.aarch64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~trixie_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d13.aarch64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~trixie_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d13.aarch64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~trixie_arm64.deb PIGSTY · 1.0.1 · 9.6KiB	PIGSTY 1.0.1 d13.aarch64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~trixie_arm64.deb PIGSTY · 1.0.1 · 9.6KiB
u22.x86_64	PIGSTY 1.0.1 u22.x86_64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~jammy_amd64.deb PIGSTY · 1.0.1 · 8.9KiB	PIGSTY 1.0.1 u22.x86_64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~jammy_amd64.deb PIGSTY · 1.0.1 · 9.0KiB	PIGSTY 1.0.1 u22.x86_64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~jammy_amd64.deb PIGSTY · 1.0.1 · 9.0KiB	PIGSTY 1.0.1 u22.x86_64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~jammy_amd64.deb PIGSTY · 1.0.1 · 9.0KiB	PIGSTY 1.0.1 u22.x86_64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~jammy_amd64.deb PIGSTY · 1.0.1 · 9.0KiB
u22.aarch64	PIGSTY 1.0.1 u22.aarch64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~jammy_arm64.deb PIGSTY · 1.0.1 · 9.0KiB	PIGSTY 1.0.1 u22.aarch64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~jammy_arm64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u22.aarch64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~jammy_arm64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u22.aarch64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~jammy_arm64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u22.aarch64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~jammy_arm64.deb PIGSTY · 1.0.1 · 9.1KiB
u24.x86_64	PIGSTY 1.0.1 u24.x86_64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~noble_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 u24.x86_64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~noble_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 u24.x86_64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~noble_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 u24.x86_64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~noble_amd64.deb PIGSTY · 1.0.1 · 9.3KiB	PIGSTY 1.0.1 u24.x86_64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~noble_amd64.deb PIGSTY · 1.0.1 · 9.2KiB
u24.aarch64	PIGSTY 1.0.1 u24.aarch64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~noble_arm64.deb PIGSTY · 1.0.1 · 9.4KiB	PIGSTY 1.0.1 u24.aarch64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~noble_arm64.deb PIGSTY · 1.0.1 · 9.4KiB	PIGSTY 1.0.1 u24.aarch64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~noble_arm64.deb PIGSTY · 1.0.1 · 9.4KiB	PIGSTY 1.0.1 u24.aarch64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~noble_arm64.deb PIGSTY · 1.0.1 · 9.4KiB	PIGSTY 1.0.1 u24.aarch64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~noble_arm64.deb PIGSTY · 1.0.1 · 9.3KiB
u26.x86_64	PIGSTY 1.0.1 u26.x86_64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~resolute_amd64.deb PIGSTY · 1.0.1 · 9.2KiB	PIGSTY 1.0.1 u26.x86_64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~resolute_amd64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u26.x86_64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~resolute_amd64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u26.x86_64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~resolute_amd64.deb PIGSTY · 1.0.1 · 9.1KiB	PIGSTY 1.0.1 u26.x86_64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~resolute_amd64.deb PIGSTY · 1.0.1 · 9.1KiB
u26.aarch64	PIGSTY 1.0.1 u26.aarch64.pg18 : postgresql-18-pg-envvar postgresql-18-pg-envvar_1.0.1-2PIGSTY~resolute_arm64.deb PIGSTY · 1.0.1 · 9.2KiB	PIGSTY 1.0.1 u26.aarch64.pg17 : postgresql-17-pg-envvar postgresql-17-pg-envvar_1.0.1-2PIGSTY~resolute_arm64.deb PIGSTY · 1.0.1 · 9.2KiB	PIGSTY 1.0.1 u26.aarch64.pg16 : postgresql-16-pg-envvar postgresql-16-pg-envvar_1.0.1-2PIGSTY~resolute_arm64.deb PIGSTY · 1.0.1 · 9.2KiB	PIGSTY 1.0.1 u26.aarch64.pg15 : postgresql-15-pg-envvar postgresql-15-pg-envvar_1.0.1-2PIGSTY~resolute_arm64.deb PIGSTY · 1.0.1 · 9.2KiB	PIGSTY 1.0.1 u26.aarch64.pg14 : postgresql-14-pg-envvar postgresql-14-pg-envvar_1.0.1-2PIGSTY~resolute_arm64.deb PIGSTY · 1.0.1 · 9.2KiB

构建

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

BASH

pig build pkg pg_envvar         # 构建 RPM / DEB 包

安装

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

pig

BASH

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

dnf

BASH

dnf install -y pg_envvar_18       # PG 18
dnf install -y pg_envvar_17       # PG 17
dnf install -y pg_envvar_16       # PG 16
dnf install -y pg_envvar_15       # PG 15
dnf install -y pg_envvar_14       # PG 14

apt

BASH

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

创建扩展：

SQL

CREATE EXTENSION envvar;

用法

envvar: 从 PostgreSQL 访问环境变量

提供一个用于读取数据库服务器环境变量的函数。

函数

SQL

get_env(name TEXT) RETURNS TEXT

返回数据库服务器上指定环境变量的值，如果未设置则返回 NULL。

示例

SQL

SELECT get_env('PGTZ');
-- UTC

SELECT get_env('HOME');
-- /var/lib/postgresql

SELECT get_env('PATH');
-- /usr/local/sbin:/usr/local/bin:...

SELECT get_env('NONEXISTENT');
-- NULL

模式支持

可以将扩展安装到指定的模式中：

SQL

CREATE SCHEMA env;
CREATE EXTENSION envvar SCHEMA env;

SELECT env.get_env('PGTZ');

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