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).


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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


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Status Not under consideration
Workspace Db2
Components Statements (DDL and DML)
Created by Guest
Created on Feb 11, 2015

RELATED IDEAS

MQTs with REFRESH IMMEDIATE need to allow more flexible definitions(RIMS)

1. MQTs with REFRESH IMMEDIATE need to allow more flexible definitions. To make MQTs feasible for an environment where quick ingest and low data latency is a priority, they cant be REFRESH DEFERRED because of the excessive locking that occurs during either REFRESH TABLE or a user-managed load process. However, in order to define an MQT as REFRESH IMMEDIATE, a number of restrictions apply. These include the requirement to remove duplicate rows, the lack of support for inner joins, and the requirement to do aggregation. In many cases, we have had to break one MQT into multiple MQTs, for the sole purpose of avoiding the overhead of a REFRESH TABLE process. We have also had to add a number of otherwise unnecessary columns to the MQT definition just to guarantee uniqueness. Most frustrating of all, when MQTs are developed, we are nearly always playing reason code ping pong between all the various SQL20058N errors. Our requirement is to remove as many restrictions from REFRESH IMMEDIATE as possible in order to make MQTs a fully functional performance technique. PRIORITY: HIGH Angie Richey

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