"group, by", problem, when, combined, with, "insert, into"

Hi All

I'm pretty new to postgres and I'm finding soemthing baffling.  I can
perform the following query without a problem -

select loser,count(*) from moves group by loser;

but when i combine it with an insert into -
insert into losses select loser,count(*) from moves group by loser;

I get
ERROR:  Illegal use of aggregates or non-group column in target list

Am I doing something wrong or is it not possible to combine insert into and
group by.

I'm using PostgreSQL 6.5.0

Cheers
Sam


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