Hi! for this purpose I use a sort of “sql-injectionâ€. It works for me because the used parameter is generated by an application, not by a user. Your query: Select * from countries where city=’London’ and … My stuff: Select * from countries where ( city=$P!{CITY} ) and … CITY is a string param. When you want to filter by city, CITY = “a city name†When you want to skip the filter CITY = “ ‘anything’ or 1=1 “ Maybe there’s a better solution but this works… ;) Regards Viersa