In one of the recent projects, I found out that despite putting good indexes and optimizing the query, I could not achieve an optimized performance and I still received an unoptimized response from the SQL Server. On examination, I figured out that the culprit was statistics. The database that I was trying to optimize had auto update of the statistics was disabled. Let us learn about how to Enable Automatic Statistic Update on Database.
SQL SERVER – Comic Slow Query – SQL Joke
Community TechDays at Ahmedabad was a great successful event. In fact, this can be considered the biggest event held in Ahmedabad thus far along with the community. I have posted a detailed report of the same at Community TechDays in Ahmedabad – A Successful Event. After the event, I received many emails requesting the comic slow query I had shown in my presentation.
SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup – Part 3
Earlier I have written two different articles on the subject Remove Bookmark Lookup. This article is as part 3 of the original article. Please read the first two articles here before continuing reading this article.
SQL SERVER – Download Logical Query Processing Poster
You can download the poster from Itzik Ben-Gan’s T-SQL Querying page over here.
Earlier this year, I had written article on SQL SERVER – Logical Query Processing Phases – Order of Statement Execution and I had asked one question to readers. I got very good response for this question. Today, I am going to discuss about one of the errata I have made there. I had displayed the Logical Query Processing order, where I had incorrectly listed the last two operations. I have listed the operations as ORDER BY first and TOP afterwards. The fact is that TOP is always executed first and ORDER BY after that.
SQL SERVER – Interesting Observation – Query Hint – FORCE ORDER
SQL Server never stops to amaze me. As regular readers of this blog already know that besides conducting corporate training, I work on large-scale projects on query optimizations and server tuning projects. In one of the recent projects, I have noticed that a Junior Database Developer used the query hint Force Order; when I asked for details, I found out that the basic concept was not properly understood by him.
SQLAuthority News – SQL Server 2008 – The Other Side of Index – Community Tech Days
Community Tech Days are here Tomorrow in Ahmedabad on Oct 3, 2009. I will be presenting the session ‘SQL Server 2008 – The Other Side of Index’. I will be available there whole day if you want to meet and discuss SQL. I will be starting my session with following cartoon. You will have to attend the session in person to see what I am going to cover in the session.
SQL SERVER – Insert Values of Stored Procedure in Table – Use Table Valued Function
I recently got many emails requesting to write a simple article. I also got a request to explain different ways to insert the values from a stored procedure into a table. Let us quickly look at the conventional way of doing the same with Table Valued Function.