Peter Nixonn wrote:
Hi Guys Has anyone written a postgres function to calculate percentages without giving "ERROR: division by zero" when fed zeros?
Almost certainly. The question is, what do *you* want it to do? You'll want to customise something like: CREATE FUNCTION percent_plus(int4, int4) RETURNS int4 AS $$ SELECT CASE WHEN $2=0 THEN -1 ELSE ($1*100)/$2 END; $$ LANGUAGE SQL; -- Richard Huxton Archonet Ltd
