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Rob,
Absolutely you can. It's basically the same as select/omit in DDS.
Create Index MY_TABLEX on MY_TABLE Where substring(MY_COLUMN, 5, 6) = '123456'
Jim
________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> on behalf of Justin Taylor <JUSTIN@xxxxxxxxxxxxx>
Sent: Friday, May 4, 2018 10:16 AM
To: MIDRANGE-L (midrange-l@xxxxxxxxxxxx)
Subject: Better SQL performance than SUBSTRING
I know that a LIKE performs better than a SUBSTRING in a SQL WHERE clause. Is there a better option than a SUBSTRING for checking specific positions in a column?
Given MY_TABLE with MY_COLUMN defined as char(12) and this query:
Select *
From MY_TABLE
Where substring(MY_COLUMN, 5, 6) = '123456';
Is there an alternative to SUBSTRING that will perform better?
TIA
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