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.
SQLAuthority News – First Editorial – T-SQL Challenges Beginners
I would like to welcome all of you to very first editorial for T-SQL Challenges for Beginners. T-SQL Challenges began with the aim to help community to come out of regular mind set of just reading articles online. There is plenty of reading material available online, but there are very…
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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.
SQLAuthority News – Accessing SQL Server Databases with PHP
Accessing SQL Server Databases with PHP SQL Server Technical Article Writer: Brian Swan Published: August 2008 The SQL Server 2005 Driver for PHP is a Microsoft-supported extension of PHP 5 that provides data access to SQL Server 2005 and SQL Server 2008. The extension provides a procedural interface for accessing…
Read MoreSQL 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 – Queries Waiting for Memory Allocation to Execute
In one of the recent projects, I was asked to create a report of queries that are waiting for memory allocation. The reason was that we were doubtful regarding whether the memory was sufficient for the application. The following query can be useful in similar case. Queries that do not…
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