Comments on: SQL SERVER – Adding Column is Expensive by Joining Table Outside View – Limitation of the Views Part 2 http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/ Personal Notes of Pinal Dave Sat, 25 May 2013 01:31:40 +0000 hourly 1 http://wordpress.com/ By: SQL SERVER – Weekly Series – Memory Lane – #008 « SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-397394 Sat, 22 Dec 2012 01:32:10 +0000 http://blog.sqlauthority.com/?p=9853#comment-397394 [...] Adding Column is Expensive by Joining Table Outside View – Limitation of the View 2 [...]

]]> By: David Smith http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-385805 Sun, 02 Dec 2012 20:54:23 +0000 http://blog.sqlauthority.com/?p=9853#comment-385805 Yeah! right thanks… better focus the content, we will publish a new article about the code of conduct and tsql etiquette & ethics.

Regards,
David Smith

]]> By: SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Data Warehouseing Concepts – Day 20 of 31 Journey to SQLAuthority http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-149461 Wed, 20 Jul 2011 01:31:24 +0000 http://blog.sqlauthority.com/?p=9853#comment-149461 [...] (Read more here) [...]

]]> By: Mick http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-148898 Sun, 17 Jul 2011 10:03:01 +0000 http://blog.sqlauthority.com/?p=9853#comment-148898 Thank you, that saved me some time. How much of your time have you spent blogging SQL Server? You must be an online legend at it!

Thanks again, Mick.

]]> By: Andreas http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-144651 Wed, 29 Jun 2011 12:26:10 +0000 http://blog.sqlauthority.com/?p=9853#comment-144651 Two questions:

1) Why are you using SELECT * … ? As an SQL Authority you should know that not explicitly specifying what columns you need will lead to brittle and potentially underperformant queries.

2) Assuming that you explicitly select the columns you need eg. SELECT [SalesOrderID],[SalesOrderDetailID], … (see question 1) what is the performance impact of adding an additional column to the view?

Best regards,
Andreas

]]> By: Koko http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-121024 Sun, 27 Feb 2011 18:42:17 +0000 http://blog.sqlauthority.com/?p=9853#comment-121024 Interesting article. I’m glad I found as I was about to make somewhat of a similar change.

I have a view consisting of 12 unions and all 12 unions join to customer table. I thought if I take the customer join outside the view and do 1 join to customer table the performance should be much better. Thinking logically joining once should be better than joining 12 times?

What do you guys think?

]]> By: madhivanan http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-97118 Mon, 01 Nov 2010 08:46:55 +0000 http://blog.sqlauthority.com/?p=9853#comment-97118 example

Declare @var varchar(100)

]]> By: kiran http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-96953 Sun, 31 Oct 2010 11:43:45 +0000 http://blog.sqlauthority.com/?p=9853#comment-96953 how declare varaible in store processure

]]> By: SQL SERVER – View Over the View Not Possible with Index View – Limitations of the View 11 Journey to SQL Authority with Pinal Dave http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-89997 Wed, 29 Sep 2010 01:30:23 +0000 http://blog.sqlauthority.com/?p=9853#comment-89997 [...] 29, 2010 by pinaldave When I wrote the article about SQL SERVER – Adding Column is Expensive by Joining Table Outside View – Limitation of the Vie…, I had received a comment that [...]

]]> By: SQLAuthority News – A Monthly Round Up of SQLAuthority Blog Posts – August 2010 Journey to SQL Authority with Pinal Dave http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-85706 Tue, 31 Aug 2010 01:31:46 +0000 http://blog.sqlauthority.com/?p=9853#comment-85706 [...] SQL SERVER – Adding Column is Expensive by Joining Table Outside View – Limitation of the Vie… [...]

]]> By: Serene Tiger http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-85642 Mon, 30 Aug 2010 11:25:50 +0000 http://blog.sqlauthority.com/?p=9853#comment-85642 It may add overhead to add the column outside the view, but using the view consumes far less processing time. I just rewrote a stored procedure that was taking 27 minutes to execute. I created a schema-bound view, which I joined to another view in the sproc. The query now executes in 6 minutes.

]]> By: Marko Parkkola http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-85320 Thu, 26 Aug 2010 09:02:46 +0000 http://blog.sqlauthority.com/?p=9853#comment-85320 I’ve tried to phrase this comments couple of times and I still isn’t exactly what I wanted to say so I’ll just post it and ask if you don’t understand something :)

Views and especially schemabound views has one upside which is ironically quite the opposite what’s this article about.

When I create schemabound view it’ll force me to make sure that:

a) I’ve thought about the situation that understand what I’m doing
b) Later on, if I need to alter table schema schemabinding makes sure that I can’t do things that’ll break lots of things up

So if I suddenly realize that I need to add some column to my query, which is not in the view, I need to think that is this what I really want and need. Is this something one time only or is it something that is used a lot?

If former I’ll just make ad-hoc query and be done with it.

But if latter I’ll add the column to the view. DB then goes and creates execution plans and statistics for the changed view and possibly optimizes execution plan and speeds up the query.

]]> By: Sumit Thapar http://blog.sqlauthority.com/2010/08/26/sql-server-adding-column-is-expensive-limitation-of-the-views-part-2/#comment-85291 Thu, 26 Aug 2010 04:11:34 +0000 http://blog.sqlauthority.com/?p=9853#comment-85291 Nice article sir….thank you…i did not know that before…..

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