If you are an SQL Server Consultant/Trainer involved with Performance Tuning and Query Optimization, I am sure you have faced the following questions many times. When is statistics updated? What is the interval of Statistics update? What is the algorithm behind update statistics? These are the puzzling questions and more.
SQL SERVER – Find Statistics Update Date – Update Statistics
Statistics are one of the most important factors of a database as it contains information about how data is distributed in the database objects (tables, indexes etc). It is quite common to listen people talking about not optimal plan and expired statistics. Quite often I have heard the suggestion to…
Read More
SQL SERVER – Enable Automatic Statistic Update on Database
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 – SQL Server Management Studio and Client Statistics
Client Statistics is very important. Many a time, people relate queries execution plan with query cost. This is not a good comparison. Both are different parameters, and they are not always related. It is possible that the query cost of any statement is less, but the amount of the data…
Read More