John Weller wrote:
> OK - I want to position the record pointer in a table on a particular record
> based on a primary key if it exists, if not I want an error message. I
> would use the code:
>
> IF SEEK(Thisval, 'MyTable','MyTag')
> *&* Do something
> ELSE
> MESSAGEBOX('That key not found')
> ENDIF
>
> What is the SQL I should use instead?
>
SELECT ThisVal FROM MyTable WHERE MyPK = ThisVal INTO CURSOR temp
IF RECCOUNT("temp") = 0 then
llExists = .F. && doesn't exist
ELSE
llExists = .T. && does exist
ENDIF
* or could be written this way if that's all you needed to do:
llExists = RECCOUNT("temp") > 0
return llExists
This is another scenario where separating your data logic from your
presentation layer is a GOOD thing. That way your UI simple calls IF
THISFORM.OBIZ.ODATA.DoesKeyExist(MyKey) and reacts accordingly.
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