Comments on: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 2 http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/ Personal Notes of Pinal Dave Sat, 25 May 2013 01:31:40 +0000 hourly 1 http://wordpress.com/ By: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 6 | SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-448464 Tue, 02 Apr 2013 01:31:03 +0000 http://blog.sqlauthority.com/?p=22318#comment-448464 [...] Part 2: Demo – What kind of Redundant Indexes are Useful with a smaller result set Here Jon demonstrates a script where even though Redundant Indexes exist they are extremely useful and should not be dropped. The result set contains the very small result set. [...]

]]> By: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1 and Included Columns Col2 and Col3 – Part 5 | SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-442209 Fri, 22 Mar 2013 11:50:34 +0000 http://blog.sqlauthority.com/?p=22318#comment-442209 [...] Part 2: Demo – What kind of Redundant Indexes are Useful with a smaller result set Here Jon demonstrates a script where even though Redundant Indexes exist they are extremely useful and should not be dropped. The result set contains the very small result set. [...]

]]> By: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 5 « SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-420803 Tue, 12 Feb 2013 01:30:57 +0000 http://blog.sqlauthority.com/?p=22318#comment-420803 [...] Part 2: Demo – What kind of Redundant Indexes are Useful with a smaller result set Here Jon demonstrates a script where even though Redundant Indexes exist they are extremely useful and should not be dropped. The result set contains the very small result set. [...]

]]> By: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 4 « SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-408718 Thu, 17 Jan 2013 01:31:23 +0000 http://blog.sqlauthority.com/?p=22318#comment-408718 [...] Part 2: Demo – What kind of Redundant Indexes are Useful with a smaller result set Here Jon demonstrates a script where even though Redundant Indexes exist they are extremely useful and should not be dropped. The result set contains the very small result set. [...]

]]> By: SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 3 « SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-406263 Fri, 11 Jan 2013 01:30:49 +0000 http://blog.sqlauthority.com/?p=22318#comment-406263 [...] promises to explain with a demo where a Redundant Index is useful and should not be dropped. In part 2 of this series – we talked about in detail about Kind of Redundant Indexes are Useful. We demonstrated that [...]

]]> By: Shantanu Gupta http://blog.sqlauthority.com/2013/01/07/sql-server-an-interesting-case-of-redundant-indexes-index-on-col1-col2-and-index-on-col1-col2-col3-part-2/#comment-404705 Mon, 07 Jan 2013 03:31:41 +0000 http://blog.sqlauthority.com/?p=22318#comment-404705 Hi Pinal,

I was thinking about few cases where we have index on
C1, C2, C3
and SELECT query having filters on (C2 and/or C3) then would NC index apply?

Also example you took was for CHAR column. How about varchar column where values range from 1 byte to 8000 byte?

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