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This is normally what you'd use to check for existence...

recExists = *off;
exec sql
select '1' into :recExists
from sysibm.sysdummy1
where exists (select 1
From file1 inner join file2
on date1=date2
Where account = 123
);
This takes advantage of the fact that if a record doesn't exist, then no
rows are returned (from sysdummy1) and the recExists variable is
unchanged. You can also check for SQLSTATE=02000-->no data.

If you want a statement that will always return either '1' or '0'...then
something like so works (on 7.2 and higher at least)
exec SQL
values coalesce((select '1' into :recExists
from sysibm.sysdummy1
where exists (select 1
From file1 inner join file2
on date1=date2
Where account = 123
)
),'0') into :recExists;

Not sure how far back the above works...
Many moons ago (v5?), I tried to figure out such a statement, I was
successful, but as I recall it wasn't nearly as clean. (for certain
definitions of clean I suppose :)


Charles


On Thu, Jul 1, 2021 at 7:22 AM <dfreinkel@xxxxxxxxxxxxxxxxx> wrote:

I have a SQLRPGLE program with the following example



Select CASE when count(*) is null then 0 else 1 end into :wCount

From file1 inner join file2 on date1=date2

Where account = 123



I get a decimal data error and it appears that the problem is with the
result, I assume. wCount is an integer. There are 2 records in the files
being read.



As it is in a RPG program, I cannot use IFNULL.



I can run the statement in interactive SQL without a problem.



Does anyone have a suggestion on how to resolve this?



Thank you.



Darryl Freinkel

A4G

Telephone: 770.321.8562 Mobile: 678.355.8562



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