Inline subqueries in the SELECT or WHERE clauses are notorious for causing performance issues. When you use subqueries, you force SQL Server to process data in isolation, instead of creating an ...

Using unique subqueries in SQL Server can be a powerful technique to improve query performance, especially in scenarios where you need to compare distinct sets of data or ensure uniqueness in your ...

What is the current behavior? executing sp_blitz returns result table, but also throws an error message. Msg 512, Level 16, State 1, Procedure #sp_Blitz, Line 9862 ...

Creates a small database table called dog. This table, dog, has been normalized to 3NF. Two new tables have been added, breedLookup and colorLookup. Creates a new table dog_expanded that joins dog, ...