One puzzle is finding out how many employees each manager is responsible for in a company. Let us Make Recursive Parent-Child Queries Efficient.
SQL SERVER Challenge – Cumulative Total Calculation
Today we will see a very interesting SQL SERVER Challenge about Cumulative Total Calculation. During a recent Comprehensive Database Performance Health Check.
SQL SERVER – DELETE Qualified Rows From Multiple Tables – Part 2
This is a follow-up blog post of the Winners and Solution – DELETE Qualified Rows From Multiple Tables. Today we will see another efficient solution.
SQL Puzzle – Correct the Incorrect Query – Win Price Worth USD 1000 – Aggregate and Subquery
A reader asked me to correct his query, and now it is your turn. Fix this Aggregate and Subquery puzzle on AdventureWorks for a chance to win a prize worth USD 1000.
Win Apple Watch Series 4 and Solve SQL Server Performance Problems
Every DBA wants to watch something different on their SQL Server. Download Spotlight to monitor your servers and get a chance to win an Apple Watch Series 4.




