One of the most popular questions I received during my Comprehensive Database Performance Health Check is Finding Queries Using Particular Index.
One Scan for 3 Count Sum – SQL in Sixty Seconds #178
Well, the answer is pretty straight forward and that is what we are going to see in today’s video of One Scan for 3 Count Sum.
SQL Server – Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1)
Today we will take the same conversation to the next level by discussing Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1).
COUNT(*) and Index Frequently Asked Questions
However, before you read today’s COUNT(*) and Index Frequently Asked Questions I suggest you watch the video COUNT(*) and Index.
COUNT(*) and Index – SQL in Sixty Seconds #175
Earlier I wrote two blog post on the topic of COUNT(*) and Index and today I have to build a video on that topic as many of you really wanted.
SQL SERVER – COUNT(*) and Index Used – Part 2
Yesterday I wrote a blog post on the topic SQL SERVER – COUNT(*) and Index Used, lots of people asked me to follow up question.
SQL SERVER – COUNT(*) and Index Used
DBA suspects those operations are using lots of clustered index scans. Let us discuss today COUNT(*) and Index Used. Let’s learn.