Comments on: SQL SERVER – Interesting Observation – Use of Index and Execution Plan

By: Graeme Martin

Graeme Martin — Mon, 03 Jun 2013 18:21:39 +0000

“pinaldev” LOL! The moniker truly applies, Pinal Dave. :-) Thanks for all you do for all of us out here.

By: VIKANTH

VIKANTH — Fri, 22 Mar 2013 10:51:32 +0000

Good notes my rocky star ,,,,,,

By: SQL SERVER – Weekly Series – Memory Lane – #006 « SQL Server Journey with SQL Authority

Sat, 08 Dec 2012 01:30:56 +0000

[...] [...]

By: SQL SERVER – Weekly Series – Memory Lane – #005 « SQL Server Journey with SQL Authority

Sat, 01 Dec 2012 01:30:57 +0000

[...] Interesting Observation – Use of Index and Execution Plan Query Optimization is a complex game and it has its own rules. From the example in the article we have discovered that Query Optimizer does not use clustered index to retrieve data, sometime non clustered index provides optimal performance for retrieving Primary Key. When all the rows and columns are selected Primary Key should be used to select data as it provides optimal performance. [...]

By: sanjay

sanjay — Tue, 29 May 2012 07:34:27 +0000

What is the use of Use row lock and use page lock when accessing the index..???

By: Hiten

Hiten — Tue, 20 Jan 2009 06:26:36 +0000

Hi Pinal,
This article is of great use for the one’s who are into optimization and performance. But I wanna ask u that if a column already have a primary key, it uses Clustered Index by default and if we don’t add a non-clustered index to the same table and we write query as : select ContactNumber from Person.Contact, then which optimization path it will follow.

By: pankaj

pankaj — Wed, 17 Dec 2008 09:00:39 +0000

its a nice summary out there
pinaldev..