The question is about JOIN Elimination for Not Selected Column. It was discussed in the Comprehensive Database Performance Health Check.
SQL SERVER – 16 CPU vs 1 CPU : Performance Comparison – SQL in Sixty Seconds #142
Well, let us figure out the answer to this question in today’s blog post where I will be doing a performance comparison of 16 CPU vs 1 CPU.
SQL SERVER – Multiple Optimize Hint for a Query
An interesting question asked by one of my clients. The question was how to have multiple optimize hints for a query. Let us learn.
SQL SERVER – Distinct and ORDER BY
I have made note that ORDER BY is not required when DISTINCT is used. Let us understand the same subject in detail. Let us learn today.
SQL SERVER – Scan Count Zero for Statistics IO
A client saw scan count zero in SET STATISTICS IO output and asked what it means. Here is what 0, 1 and higher scan counts tell you.
Arrow in Execution Plan – SQL in Sixty Seconds #136
Do you know what a single arrow means in an execution plan? While we popularly call it the arrow, there is a technical name for these little arrows.
What is EDGE in SQL Server Execution Plan? – Interview Question of the Week #298
Question: What is EDGE in SQL Server Execution Plan?
Answer: It is the arrow or the line which goes from one operator to another operator.