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Status Future consideration
Workspace Db2
Created by Guest
Created on Oct 27, 2021

Index support for "expression op expression"

In our environment, we have many queries with predicate: "expression op expression".

As they don't use indexes they're performing a table scan.

We would like DB2 to be able to use indexes to resolve this type of predicate.


Examples:

SELECT [id], [start_timestamp]

FROM table

WHERE [id] + 1000 >= 5000;


SELECT [id], [start_timestamp]

FROM table

WHERE [id] / 1000 >= 100;


SELECT [id], [start_timestamp]

FROM table

WHERE [start_timestamp] + CURRENT TIME ZONE = CURRENT TIMESTAMP;

Needed By Yesterday (Let's go already!)