Dunno if this is the right way to ask a question but...
I'm inheriting some data and need to perform a query on it to sum a column of figures. The only problem I have to sum on the condition of the contents of another column.
e.g.
12.23 I
23.45 P
56.67 I
11.11 P
SO I need to sum all the I's and all the P's. Is it possible to use a sub-select to do this or what. I've a feeling I'm messing around in the right area but can't quite get it together.
Cheers,
Graeme