On 10/19/05 8:26 AM, "Tim Nelson" <timnelson@xxxxxxxxxxxx> wrote: > I am getting division by zero on a calculated field ( sum(sales) is 0 ) > and I can't find a way around this. I figured out you can't use an > aggregate in a where, and using having the parser must (obviously) > evaluate the select fields before considering teh having clause. > > Does anyone have a way around this? Thanks! > > select > type, > sum(sales), > sum(cost), > (sum(sales) * sum(cost) / sum(sales)) * 100 > from test > group by 1 > having sum(sales) != 0 Can you use case? http://www.postgresql.org/docs/8.0/interactive/functions-conditional.html Or you could create a simple function to do the logic to avoid the division by zero. Sean ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
