please go to java.sun.com & there are various types of jdbc drivers . You will get all the information about them on that site & bprobably in those documents only you will get the answer for union querries suppported by jdbc. i hope this is useful.
Hi Sunil, UNION queries are defined as standard SQL syntax and are hence defined by all ASNI SQL compliant databases. So u shouldn' thave a problem with UNION. If however u do want to check, i would suggest firing a UNIONquery and checking for an SQLException. It's not very clean, but i guess JDBC drivers do not allow u to access their properties. Hope it helps, -Mohammed
I think there may be some confusion here. Most JDBC drivers simply pass the SQL to the appropriate database, and whether any particular SQL features are supported depends entirely on the database. I have happily used UNION in queries to Oracle 7 through the Oracle 7 thin driver. What database are you using?