Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> c.d.o.server -> Re: how to update portion of the varchar type data

Re: how to update portion of the varchar type data

From: damorgan <damorgan_at_exesolutions.com>
Date: Tue, 03 Dec 2002 16:52:40 GMT
Message-ID: <3DECE157.4913D28B@exesolutions.com> 





Hkgirlygirl wrote:



> if I index the column varchar(30) and

> when I select my data by using order

> by substr(item,4,3),  will that do a table scan?




Yes. The index will not be used.



If you want an index on this portion of the explore using a function
based index.



Daniel Morgan
Received on Tue Dec 03 2002 - 10:52:40 CST












Original text of this message













  HOME |
  ASK QUESTION |
  ADD INFO |
  SEARCH |
  E-MAIL US