Thanks Emmitt - that sorts that out. 

I was looking at purchasing an SQL reference book a while ago but wasn't
sure which to choose, so ended up with nothing. Do you, or anyone else, have
any suggestions in that regard ?

Regards,
 
John Docherty

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Emmitt Dove
Sent: Sunday, 6 April 2008 1:25 p.m.
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: IF with SELECT

Since the IF .. THEN construct isn't part of SQL, a SQL SELECT is out of
place there.

Emmitt Dove
Manager, DairyPak Business Systems
Evergreen Packaging, Inc.
[EMAIL PROTECTED]
[EMAIL PROTECTED]
(203) 643-8022

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of John
Docherty
Sent: Saturday, April 05, 2008 9:03 PM
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: IF with SELECT

Albert,

Thanks for your reply. I had changed my routine as you have suggested, but
it would be handy if you could do it the other way ?  

Regards,
 
John Docherty

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Albert Berry
Sent: Sunday, 6 April 2008 9:22 a.m.
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: IF with SELECT

John, you can
SELECT COUNT(*) INTO vsCount FROM sections WHERE sno = .vsno
IF vsCount > 0 THEN
-- whatever
ENDIF

AFIK the IF statement does not allow embedded SELECT clauses in R:Base


John Docherty wrote:
> I am wanting to base an IF statement on the existence of a number in a
> table, 
> however I receive the following error with my attempt, which is
>
> IF vsnew IN (SELECT secno FROM sections WHERE sno=.vsno) THEN ….
>
> -ERROR- Sub-SELECTs are not supported by this command. (2310) 
>
> I was wondering if the only way of achieving this to do a SELECT INTO (or
> similar) to determine if any values exist that meet the criterion or, is
> this possible, but my statement is incorrect ?
>
> Any suggestions would be much appreciated. 
>
>
>   


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