IBM Data and AI Ideas Portal for Customers


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Status Delivered
Workspace Db2 for z/OS
Created by Guest
Created on Nov 23, 2022

RELATED IDEAS

Improve performance in queries with IN predicate

Hello!

We had problems with CPU in Production environment several months ago with a simple query with IN predicate. The CPU reached 100%! Particularly, this query has many literals within IN predicate and the IN predicate can't be matching. After several weeks with the case opened and being studiated by IBM CAS, they tell us that this kind of situation needs an improvement.

I include the query, its explain (that is not very bad) attached and the case number.

Thanks so much in advance!

Best regards,

Adrián.

Query & Explain...
Query & Explain.docx
 Query & Explain.docx
Open full size
Query & Explain.docx
Needed By Yesterday (Let's go already!)
  • Admin
    Janet Figone
    Reply
    |     Oct 21, 2024

    This is delivered in APAR PH58750 and enabled with APAR PH62635.

  • Admin
    Janet Figone
    Reply
    |     May 15, 2024

    Dear Adrian, One correction, although PH58750 is now available, the enhancement in it is tied to the activation of our next Db2 function level, which is planned for delivery in 4Q24.

    Sincerely,

    The Db2 for z/OS Team

  • Admin
    Janet Figone
    Reply
    |     May 15, 2024

    Dear Adrian, We are pleased to inform you the enhancement requested in this Aha! idea has been delivered and is now available in APAR PH58750.

    We appreciate your input to the Db2 for z/OS development team. And 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,

    Db2 for z/OS Team

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