On Thu, Apr 7, 2016 at 9:00 AM, Luiz Americo Pereira Camara <luizameri...@gmail.com> wrote: > > I enconter the following pattern frequently (simplified): > > SQL: > Select * From Customers Where FieldX = 1 > > Later i need a similar query that uses a different filter like > > Select * From Customers Where FieldX = 1 and FieldY = :paramy > > Is there any code that given a SQL Template would generate the second filter > when paramy is available and keep blank when not available?
You can do this: ===begin=== select * from Customers where 1=1 and FieldX = 1 and (:paramy = -1 or FieldY = :paramy) ===end=== if you do not want to filter, just pass -1 (or whatever). Otherwise, pass the real value. For MSSQL I like to declare a variable like this: ===begin=== declare @paramy int = :paramy ... and (@paramy = -1 or FieldY = @paramy) ===end=== Regards, Marcos Douglas _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
