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join within an SQL task VS merge or merge join

  • February 8, 2013 at 2:58 am

    #149740

    Hi,

    In our SSIS package we have a lot of stored procedures which get called via a SQL task. These SP's sometimes have a union all or joins between lots of tables before inserting into a final table.

    If I change the entire flow into merge,merge join and other tasks, will it improve my performance in any way? Or would SQL tasks be better and faster?

    Thanks,

    Namrata

  • February 8, 2013 at 4:15 am

    #1585855

    namrata.dhanawade-1143388 (2/8/2013)

    Hi,

    In our SSIS package we have a lot of stored procedures which get called via a SQL task. These SP's sometimes have a union all or joins between lots of tables before inserting into a final table.

    If I change the entire flow into merge,merge join and other tasks, will it improve my performance in any way? Or would SQL tasks be better and faster?

    Thanks,

    Namrata

    SQL Server is better at set-based operations like JOIN, ORDER BY and any form of aggregation 99% of the time - it's what it was designed to do. The final INSERT, however, may be faster in SSIS, which is optimised for large, fast inserts.

  • February 8, 2013 at 4:32 am

    #1585861

    Thanks a lot. This helps. 🙂

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