On Mon, May 04, 2009 at 10:42:01AM +0200, A. Kretschmer wrote: > No, you need a own aggregate function, but it is easy: > > test=# CREATE FUNCTION multiply_aggregate(float,float) RETURNS float AS > ' select $1 * $2; ' language sql IMMUTABLE STRICT; CREATE AGGREGATE > multiply (basetype=float, sfunc=multiply_aggregate, stype=float, > initcond=1 ) ; > CREATE FUNCTION > CREATE AGGREGATE
Note, you don't have to create your own function here, since there's a builtin called float8mul. So the following will work: CREATE AGGREGATE multiply (basetype=float8, sfunc=float8mul, stype=float8, initcond=1); The rest is the same. Have a nice day, -- Martijn van Oosterhout <klep...@svana.org> http://svana.org/kleptog/ > Please line up in a tree and maintain the heap invariant while > boarding. Thank you for flying nlogn airlines.
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