On Mar 24, 2008, at 1:09 PM, Martijn van Oosterhout wrote:
On Mon, Mar 24, 2008 at 12:47:43PM -0500, Josh Trutwin wrote:
My code to check if an aggregate exists runs this query:
SELECT * FROM pg_catalog.pg_aggretate WHERE aggfnoid =
'foo'::REGPROC;
Seems to me you'd rather want the proisagg column in pg_proc and
forget
about pg_aggregate altogether...
Also, the idiom for checking if something is present is normally:
SELECT 1 FROM some_table WHERE ...;
This way you aren't dealing with errors, if it doesn't exist the query
simply doesn't return any results.
Erik Jones
DBA | Emma®
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