Re: select into with case condition

On Feb 28, 2019, at 1:07 AM, Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx> wrote:

First it is not possible to handle multiple (return) variables within the
same CASE clause, you need a CASE Clause for each variable, i.e.
Case When :Parm = 1 Then :HostVar1 Else :HostVar3 End,
Case When :Parm = 1 Then :HostVar2 Else :HostVar4 End

But I assume you cannot specify a case clause after the INTO (at least I
didn't try it)
You may always populate all 4 variables.

Select Case When :Parm = '1' Then Column1 Else '' End,
Case When :Parm = '1' Then Column2 Else '' End,
Case When :Parm <> '1' Then Column1 Else '' End,
Case When :Parm <> '1' Then Column2 Else '' End
Into :HostVar1, :HostVar2, :HostVar3, :HostVar4
From ...

An other way would be to use a dynamic SQL statement with VALUES INTO, but
even then you have to have 2 different EXECUTE Statements where you specify
the receiving variables.

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
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"What is worse than training your staff and losing them? Not training them
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-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Jay Vaughn
Sent: Mittwoch, 27. Februar 2019 20:39
To: RPG programming on the IBM i (AS/400 and iSeries)
<rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: select into with case condition

what is the proper method/syntax (if any) to allow something like the
following...?


select column1
,column2
into...
case when :parm = '1'
then :hostvar1
,:hostvar2
else :hostvar3
,:hostvar4
end
from mytable
where this = that;

tia,

jay
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