IBM Data and AI Ideas Portal for Customers


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Add a new idea Subscribe
Status Delivered
Workspace Informix
Components Informix Server
Created by Guest
Created on Jul 8, 2021

RELATED IDEAS

Allow indexes to be made invisible to queries

When removing unused indexes the first step we want is to be able to make index invisible to queries similar to the Oracle feature. As the index is still being maintained the rollback to make the index visible to queries is quick.

Needed By Quarter
  • Guest
    Reply
    |     Nov 20, 2024

    Love it!

  • Admin
    Karen Qualley
    Reply
    |     Nov 20, 2024

    Delivered as part of the IBM Informix v15.0 release

  • Guest
    Reply
    |     Feb 7, 2023

    I believe disabling an index via SET INDEXES means the index is no longer maintained.

    I want the index maintained just not used by the optimizer so we can be sure query plans do not degrade.

    After some time the index can then safely be dropped without affecting performance.

  • Guest
    Reply
    |     Nov 3, 2021

    This feature is already available as you can disable a single index:

    >>-SET INDEXES--+---index-+--+---------------------------------->
                    '-FOR--table-'   

    >--+-+-ENABLED--+---------------------------+------------------><
       | '-DISABLED-'                           |   
       |  (1)             .-WITHOUT ERROR-. (2) |   
       '-------FILTERING--+-WITH ERROR----+-----'   


    It's not equal to Oracle feature but can work as a workaround

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