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Re: Running CREATE only on certain Postgres versions

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> -----Original Message-----
> From: Robert James [mailto:srobertjames@xxxxxxxxx]
> 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


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