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Status Not under consideration
Workspace Db2 for z/OS
Created by Guest
Created on Apr 25, 2014

RELATED IDEAS

Selective Suppression of DB2 maintained System History

There are times when it is not desirable to create a new DB2 maintained system history row if the values in the columns of the base table have actually not changed. DB2 already suppresses the actual update of a non-temproal table if none of the column values has changed. Because the SYSTEM start/end timestamps are defined as GENERATED ALWAYS, those two values always change, therefore an update will always take place.

In cases like these, when the only columns seeing new values are the GENERATED
ALWAYS (maintained by system columns), a SUPPRESS UPDATE feature would need to
be applied to the temporal tables.

Futher, the feature would be most useful at a thread level (though same may
also want table level); in some cases it may actually be useful to know that a
process UPDATEd a row with the exact same values.
  • Admin
    Janet Figone
    Reply
    |     Aug 30, 2022


    Thank you for submitting this Db2 for z/OS enhancement request. We have reviewed this request and believe it is a good candidate

    for the Db2 for z/OS product. However, it does not align within functionality prioritized for delivery within the next 12 months. Therefore, unfortunately, we will not be considering this idea at this time.

    This idea will remain in our product backlog and may be revisited as we continue to plan for later features and functions.

    We appreciate your input to the Db2 for z/OS development team. We hope that you will continue to submit enhancement suggestions for improvements as customer feedback is a key component to shaping the future direction of Db2 for z/OS.

    Sincerely,

    The Db2 for z/OS Team

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