PostgreSQL: Which version of PostgreSQL am I running?

Question

I\'m in a corporate environment (running Debian Linux) and didn\'t install it myself. I access the databases using Navicat or phpPgAdmin (if that helps). I also don\'t have

Answer 1

In my case

$psql
postgres=# \g
postgres=# SELECT version();
                                                       version
---------------------------------------------------------------------------------------------------------------------
 PostgreSQL 8.4.21 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.6.real (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 64-bit
(1 row)

Hope it will help someone

Answer 2

The accepted answer is great, but if you need to interact programmatically with PostgreSQL version maybe it's better to do:

SELECT current_setting('server_version_num'); -- Returns 90603 (9.6.3)
-- Or using SHOW command:
SHOW server_version_num; -- Returns 90603 too

It will return server version as an integer. This is how server version is tested in PostgreSQL source, e.g.:

/*
 * This is a C code from pg_dump source.
 * It will do something if PostgreSQL remote version (server) is lower than 9.1.0
 */
if (fout->remoteVersion < 90100)
    /*
     * Do something...
     */  

More info here and here.

Answer 3

Execute command

psql -V

Where

V must be in capital.

Answer 4

If you have shell access to the server (the question mentions op does not have, but in case you have,) on a debian/ubuntu system

sudo apt-cache policy postgresql

which will output the installed version,

postgresql:
  Installed: 9.6+184ubuntu1.1
  Candidate: 9.6+184ubuntu1.1
  Version table:
 *** 9.6+184ubuntu1.1 500
        500 http://in.archive.ubuntu.com/ubuntu artful-updates/main amd64 Packages
        500 http://in.archive.ubuntu.com/ubuntu artful-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu artful-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu artful-security/main i386 Packages
        100 /var/lib/dpkg/status
     9.6+184ubuntu1 500
        500 http://in.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        500 http://in.archive.ubuntu.com/ubuntu artful/main i386 Packages

where the Installed: <version> is the installed postgres package version.