> Ahh, so easy... that's great, but now i'm using FB 1.5, is there any
> alternative approach to this subset query, please?

Depends on what you're doing...

One way would be to put the subquery into a view.

Another way could be a join.

Really, it depends on what you're doing.

Martijn Tonies
Database Workbench - tool for InterBase, Firebird, MySQL, Oracle & MS SQL
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