Phani,
Not a lot of information given in the OP, but traditionally this type of task is done with an ETL. If your using MSSQL you can use Microsoft Data Transformation Services (DTS) or there are open-source tools available that can connect over JDBC to other databases.
Might be more work initially, but will payoff the next time to need to transform data.
Cheers,
Philip
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.