RE: sql question

Not sure, but that looks like an OS bug to me.

Try altering the first ORDER BY to use an ordinal value, i.e.:

with t1 as (
SELECT
substr(digits(CLIENT_number),1,5) as corp,
sum(Balance) as BalanceSum
FROM
qtemp.clfile
GROUP BY substr(digits(CLIENT_number),1,5)
ORDER by 1
)
select corp, BalanceSum
from t1
order by BalanceSum desc
fetch first 25 rows only

or column alias, i.e.:

with t1 as (
SELECT
substr(digits(CLIENT_number),1,5) as corp,
sum(Balance) as BalanceSum
FROM
qtemp.clfile
GROUP BY substr(digits(CLIENT_number),1,5)
ORDER by Corp
)
select corp, BalanceSum
from t1
order by BalanceSum desc
fetch first 25 rows only

Elvis

Celebrating 11-Years of SQL Performance Excellence on IBM i5/OS and OS/400
www.centerfieldtechnology.com


-----Original Message-----
Subject: RE: sql question

But the devil is in the details.

Why can I do this:
SELECT
substr(digits(CLIENT_number),1,5) as corp,
sum(Balance) as BalanceSum
FROM
qtemp.clfile
GROUP BY substr(digits(CLIENT_number),1,5)
ORDER by substr(digits(CLIENT_number),1,5)

But this
with t1 as (
SELECT
substr(digits(CLIENT_number),1,5) as corp,
sum(Balance) as BalanceSum
FROM
qtemp.clfile
GROUP BY substr(digits(CLIENT_number),1,5)
ORDER by substr(digits(CLIENT_number),1,5)
)
select corp, BalanceSum
from t1
order by BalanceSum desc
fetch first 25 rows only

Tells me that
SQL0122-Column CLIENT_NUMBER or expression in SELECT list not valid.

Rob Berendt