IBM Data and AI Ideas Portal for Customers


This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:


Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,


Post your ideas

Post ideas and requests to enhance a product or service. Take a look at ideas others have posted and upvote them if they matter to you,

  1. Post an idea

  2. Upvote ideas that matter most to you

  3. Get feedback from the IBM team to refine your idea


Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.

ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

IBM Employees should enter Ideas at https://ideas.ibm.com


Add a new idea Subscribe
Status Not under consideration
Workspace Db2
Components Statements (DDL and DML)
Created by Guest
Created on Nov 16, 2016

RELATED IDEAS

Improve access plan resolution for SELECT MAX() (or MIN()) statements on range-partitioned tables with local (partitioned)

Context: range partitioned table with partitioned indexes
A SELECT MAX() statement is issued on a field that is not the part of the partitioned key. The query is resolved by performing a full index scan on a partitioned index on that field.
That is, DB2 performs a complete index scan over all partitions and a sort to find the MAX().
We expect that DB2 would do the MAX() on each partitioned index object, and then pickup the MAX of all of them. This way a full scan is not needed and the IO/CPU cost and execution time would be greatly
  • Guest
    Reply
    |     Nov 4, 2022

    For us it would be also very important to speed up the max()-function

  • Guest
    Reply
    |     Jun 24, 2021

    this approach should also be evaluated not just for MIN() or MAX() function, but also, if user wants to get the first N set of rows, by using FETCH FIRST n rows clause..
    like
    select colum1 from tab1 order by 1 fetch first 50 rows.
    and similar limited range set of rows are involved,, should also be considered.


By clicking the "Post Comment" or "Submit Idea" button, you are agreeing to the IBM Ideas Portal Terms of Use.
Do not place IBM confidential, company confidential, or personal information into any field.