Sol and Peter,
Thanks for your feedback. Both of your suggestions got me going in
the right direction and I was able to solve the problem using
temporary tables and left joins.
Thanks again.
Albert Padley
On Jul 23, 2005, at 11:00 AM, sol beach wrote:
create table count_temp1 select i
Albert,
Your spec isn't entirely clear to me (eg if sd1 & sd2 were 'unique
within each record', wouldn't there be zero rows where sd1=sd2?), but is
this what you're looking for ...
SELECT
zz,
COUNT(zz) as zzCount,
SUM(IF(zz=sd1 AND sd1=sd2, 1, 0)) AS sd1sd2Count
FROM ss
GROUP BY zz;
Peter
I would be grateful if those of you around this weekend could help me
figure out if what I'm after is possible. I've already spent hours
with the manual, the archives and my books. I've looked at JOINS and
TEMP TABLES but still can't come up with a solution.
THE ENVIRONMENT: MySQL Version
