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Hi,

If not necessary, I'd not use a count(*), because all rows must be read.
If I only want to check if a row exists, I'll use the following SELECT
statement:

Clear wPrvFL;
Exec SQL Select '1' into :wPrvFl
From ....
Where ...
Fetch First Row Only;

--> If a row is found wPrvFl is set to *On, otherwise it will not be
changed.
--> The executions stops after the first row is found.
--> An index only access might be performed.

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: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im
Auftrag von David FOXWELL
Gesendet: Monday, July 21, 2008 17:56
An: RPG programming on the AS400 / iSeries
Betreff: SQL and host indicator


Hi all,

I just compiled this. I just wanted to ask if this a perfectly normal way to
set an indicator with SQL.

Thanks



D wPrvFl S N

EXEC SQL

SELECT

CASE WHEN COUNT(*) > 0 THEN '1' ELSE '0' END INTO : wPrvFl

FROM etc

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