Andrew.V.S.Возможно ли сделать такое, и в какую сторону копать?Боюсь, что не удастся совсем обойтись без перебора child DW. А копать я бы начал в сторону обработки события sqlpreview.

PowerBuilder Help Description

Occurs immediately before a SQL statement is submitted to the DBMS. Functions that trigger DBMS activity are Retrieve, Update, and ReselectRow.
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PowerBuilder Help Return value

Set the return code to affect the outcome of the event:

0 Continue processing
1 Stop processing
2 Skip this request and execute the next request

For information on setting the return code in a particular environment, see "About return values for DataWindow events".

Usage

Some uses for the sqlsyntax argument are:

· Changing the SQL to be executed (you can get the value of sqlsyntax, modify it, and call SetSQLPreview)
· Keeping a record (you can write the SQL statement to a log file)