>>>>Also, you're hurting yourself needlessly using ALLTRIM() in WHERE clauses; it ensures that the expression will not be Rushmore-optimizable, and depending on the SET environment, may result in unexpected matches using the = operator.
>>>>>Thanks in advance for your help!
>>>
>>>Hi Ed,
>>>Yes, the brackets are working fine.
>>>With the ALLTRIM(), I once had problems to match the values, if I don't use ALLTRIM. Is there another way to be sure, that the values match?
>>
>>Assuming that you don't have leading spaces as an issue, I'd use:
>>
>>cMyVar = 'MyTable.MyField == [" + PADR(this.Value, LEN(MyTable.MyField)) +']'
>>
>>Which uses the exactly equal comparator, and ensures that the length ofd the compare string is the same as the length of the field.
>
>Hi Ed,
>A good idea! I have a similar problem somewhere else:
>SCAN
> REPLACE This WITH That FOR !EMPTY(THAT)
>ENDSCAN
>I suppose, this also is not Rushmore optimizable, but using LEN(That)>0 does not solve it: I would have to say again LEN(ALLTRIM(That)>0, which throws me back again. Do you have a suggestion??

The SCAN...ENDSCAN is completely unnecessary, since the FOR condition loops through the table for you.