Re: Running CREATE only on certain Postgres versions

> -----Original Message-----
> From: Robert James [mailto:srobertjames(at)gmail(dot)com]
> Sent: Monday, September 24, 2012 9:33 AM
> To: Postgres General
> Subject: Running CREATE only on certain Postgres versions
>
> I have some code which creates a function in Postgres, taken from
> http://wiki.postgresql.org/wiki/Array_agg .
>
> DROP AGGREGATE IF EXISTS array_agg(anyelement); CREATE AGGREGATE
> array_agg(anyelement) ( SFUNC=array_append, STYPE=anyarray,
> INITCOND='{}'
> );
>
> The function was added in 8.4, and so the code fails when run on 8.4 or
> higher.
>
> How can I make the code cross-version compatible? For instance, how
> can I tell it to check the version, and only run if 8.3 or lower? Or
> another way to make it cross-version?

Find your PG version with:
SELECT version();

and continue accordingly...

Regards,
Igor Neyman