creating "dynamic" SQL report

Hi

could you please give me an advice about the best approach how to create the dynamic report in the sense of passing a user defined SQL query? (How to dynamically create table with variable number of columns and names selected in the query etc.). I have studied a lot of stuff about BiRT but in the particular example(on birt-exchange.org) there is needed to pass at least arraylist with column names to show.

Thanks a lot and sorry for my beginner's question and sorry for my English.