Thread: sum a subquery?

Hi, 

I think what you want to do is the following:

SELECT sum(number_column), letter_column FROM table_name GROUP BY letter_column;

Hope I got it right...

Regards,
Patrik Kudo

> Graeme Merrall wrote:
> 
> 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