Comparing Top Two Rows in a Table and Identifying Columns with Different Values

SQL Query Breakdown: Understanding Horizontal Joins with INTERLEAVE

SQL Query Optimization: Extracting Years and Month Columns from a Membership Database

Understanding Windowing Functions in T-SQL: Counting Gaps and Enumerating NULL Values

Joining Data Tables with Current Year and Prior Year Records: A Step-by-Step SQL Solution

Using SQL Server String Functions to Search for a Specific String within an Array of Strings

Finding Parent Table Entries with Exact Same Values and Number of Child Table Entries Using Relational Division Without Remainder in SQL

Understanding the Mysterious Case of TSQL datetime Field and How to Avoid Common Issues When Working with Dates and Times in Your Database

How to Run Aggregate Functions on Grouped Records While Preserving Unique Values in SQL

Optimizing SQL Code for Correcting License and Use Period Matching