IBM Power Ideas Portal
Hide about this portal


This portal is to open public enhancement requests against IBM Power Systems products, including IBM i. 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

  1. Post an idea.

  2. Get feedback from the IBM team and other customers to refine your idea.

  3. Follow the idea through the IBM Ideas process.


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.

Add a new idea Subscribe
Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Jul 25, 2017

RELATED IDEAS

LISTAGG - Add parameter for length and allow less than 4000

See this idea on ideas.ibm.com

The new LISTAGG function is very convenient. Two things that have us scratching our heads though:
(1) Why does the length have an arbitrary minimum of 4000?
(2) Why is setting a different length done by a CAST of the input instead of just adding a 3rd parameter with the desired length? This would seem a lot cleaner and clearer.


Use Case:

We can think of many places where we can eliminate application code to manually assemble list items with this, but few of them are even close to 4000 characters wide. Example: In a simple list we might want to limit to 80 characters and get the convenient count of truncated items without having to fetch everything into our application and then process it.

The CAST operation to change the length longer is also not intuitive vs. having an explicit parameter and makes the code a lot harder to read.


Idea priority Low
  • Guest
    Reply
    |     Dec 8, 2020

    IBM does not intend to provide a solution to this request at this time, so it is being closed.

    LISTAGG as currently implemented aligns with the SQL standard. We do not intend to extend it with non-standard syntax.

  • Guest
    Reply
    |     Jun 3, 2020

    Another nice use case could be:
    Not only set the length to an individual value, it would be also nice to limit the number of list-entries returned in the string, e.g.
    list only the first 6 entries of the list, based on the ORDER BY-expression AND use the ON OVERFLOW-clause to indicate that more entries exists.

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.