I have a complex SQL-Query (using Delphi with BDE) with a lot of
sub-queries. The query is a UNION of 5 select statements.

If I execute the command the connection to the firebird server is
immediately dropped.

If I reduce my query to only 4 select statements, the query works.


Are there any parameters (server side or client side) which I need to
change? Or what else can I do?


Thanks from Germany.