depending on your comfort level, you can choose to practice questions on basic, intermediate, and advanced SQL topics. In addition, you can filter the practice questions by topics, such as select queries, joins,
HackerRankandPGExercisesare two platforms that can help you do this. They have a series of SQL problems that range from beginner to advanced, and solving these questions will give you a much better grasp of the language. Sites like HackerRank are often used by hiring managers to assess a can...
TSqlStrong - T-Sql type checker that detects improper joins, possibly null value operations, enumeration check constraint violations, incorrect use of temporary table at call site, and more (by John Suder) Other sp_whoisactive (by Adam Machanic) SQL# SQLCLR functions (by Sql Quantum Lift)...
These questions and concepts cover a broad range of advanced SQL topics such as window functions, joins, normalization, subqueries, and transaction management. Mastery of these areas will demonstrate a solid understanding of relational database systems and SQL performance optimization. Tips for SQL Inte...