Comments on: SQL SERVER – 2005 – Twelve Tips For Optimizing Sql Server 2005 Query Performance

By: Brixton

Brixton — Fri, 06 Nov 2009 08:12:51 +0000

Hi! try using WHILE LOOP. It works the same way with cursor but is more efficient.

By: Kalyan

Kalyan — Fri, 23 Oct 2009 13:12:28 +0000

This is for LAKSHMI,

Lakshmi u r absolutely Correct…

By: chethana

chethana — Tue, 21 Jul 2009 07:16:31 +0000

Even the subqueriew will drag your query performence down ‘

a simple join can answer your degraded performence
with subquries
usage of table variables and CTE will best replace the
cursors

By: lakshmi

lakshmi — Wed, 18 Mar 2009 16:08:57 +0000

sidd,

You can use correlated subqueries,temporary tables and common table expessions as an alternative to cursors.

suggest me if iam wrong.

Thanks
lakshmi

By: Atif Siddiqui

Atif Siddiqui — Tue, 28 Oct 2008 06:59:17 +0000

Dear Mr. Dave,

I knew this 12 tips before I read your articles, but I’ve a question that just raised in my head..

Sometimes we must use cursors for some reasons, how can anyone avoid using it. Do you have any alternative of CURSORS?

If yes, then please let me know..

rgds,

Sidd

By: rakesh

rakesh — Sat, 04 Oct 2008 04:59:13 +0000

Sir ,

i studied that indexes will increase the performance

by decreasing table scans and i/o cost……..

could you please explain

what is table scan?

what is i/o cost?

By: Vijay

Vijay — Fri, 12 Sep 2008 14:42:33 +0000

Hi Pinal,

I am not sure whether this is right or not. As i am giving link of other website to your website reader. My intention is only to help them. If you think it is not right then let me know so that i can stop.

Thanks,
Vijay

By: Alkesh khedle

Alkesh khedle — Wed, 06 Aug 2008 08:21:33 +0000

Could you please tell me the difference between Hash join,Merge Join and Nested Join in Execution plan often seen.
Which scenario they come to the picture.And the performance
order of the three.

By: huynp

huynp — Wed, 23 Jul 2008 02:18:28 +0000

Hi, could you explain detail of these tips?

By: Rupesh

Rupesh — Wed, 09 Jul 2008 06:19:18 +0000

HI Pinal,

could you please reply on the followings:

1. Keep your clustered index small.
2. Use Apply
3. Avoid cursors – When we have a situation that we can not avoid the use of cursor than what is the alternate solution? is there anything we can use instead of cursor to perform the desired task? which optiomize the peroformance too.

Thanks in advance.

Regards,
Rupesh

By: dheeraj

dheeraj — Tue, 08 Jul 2008 08:47:05 +0000

for question#1 correct me if i am wrong Pinal.
is this the same thing our cluster value shuld be small rather than long (sting values)?

By: swarna

swarna — Tue, 24 Jun 2008 07:47:36 +0000

why to use veiws ?and how to use it.and why veiws used
what are indexes ?and why indexes are used

By: ramesh

ramesh — Thu, 19 Jun 2008 07:56:02 +0000

Hi pinal ,

what’s the difference between Covering Indexes and Clustered Indexes ?

how to use clustered index small ?

By: Darshan shah

Darshan shah — Thu, 12 Jun 2008 11:48:33 +0000

Hi Pinal ,

What is archive your old data?

By: Darshan shah

Darshan shah — Thu, 12 Jun 2008 11:48:07 +0000

Hi pinal ,

How to use ‘Use APPLY’?

By: Derek

Derek — Tue, 03 Jun 2008 19:52:29 +0000

What do you mean by Keep your clustered index small?