RE: SQL error

Hi Eric
I also have the same book, but I have found that the "real" way to
understand SQL is to look at the different tips and techniques that people
(especially on this list) suggest and try and use what they suggest.
There are MANY different ways to skin a cat, and that seems to be more
than apparent where SQL is concerned.
Go to this web page
http://www.as400pro.com/tipListInq.php?cat=SQL
Then choose iSeries (AS/400) SQL
You will see many different tips and techniques that people have suggested
for doing many different things

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Friday, September 07, 2012 1:33 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: SQL error

This works great with one tiny change - needs two (( after Coalesce.


Is there a book or website that explains SQL on iseries? Especially
updates with joins?

I have two books - SQL400 by Paul Conte & Mike Cravitz and also SQL at
Work by Howard Arner.

The only joins I can find are SELECTs (read only, no updates).

How do you learn this stuff???

thanks!!

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Birgitta Hauser
Sent: Friday, September 07, 2012 11:56 AM
To: 'Midrange Systems Technical Discussion'
Subject: AW: SQL error

I'd use COALESCE in this way:
update bzcontract a set XDPCV =
Coalesce(select sum(CMPAMT) from pricecmp b, ctltable where a.ACNTNMB =
b.ACNTNMB and CTLTABLE = 'PRICE COMP' and cmptype = CTLELEMENT and
CTLFLAG1 = 'Y'
group by ACNTNMB), 0)

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok) "What is
worse than training your staff and losing them? Not training them and
keeping them!"


-----Ursprüngliche Nachricht-----
Von: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] Im Auftrag von DeLong, Eric
Gesendet: Friday, 07.9 2012 18:24
An: Midrange Systems Technical Discussion
Betreff: RE: SQL error

Use Coalesce to supply a "default value" instead of null...

update bzcontract a set XDPCV =
(select coalesce(sum(CMPAMT),0) from pricecmp b, ctltable where a.ACNTNMB
= b.ACNTNMB and CTLTABLE = 'PRICE COMP' and cmptype = CTLELEMENT and
CTLFLAG1 = 'Y'
group by ACNTNMB)

hth,
-Eric

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Friday, September 07, 2012 11:20 AM
To: 'Midrange Systems Technical Discussion'
Subject: SQL error

How can I get around error (without changing file to allow nulls)?



update bzcontract a set XDPCV =
(select sum(CMPAMT) from pricecmp b, ctltable where a.ACNTNMB =

and CTLTABLE = 'PRICE COMP' and cmptype = CTLELEMENT and CTLFLAG1 =

group by ACNTNMB)

error:

Null values not allowed in column or variable XDPCV.

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