How to Join Date Ranges in Your Select Statement Using an Ad-Hoc Tally Table Approach

Conditional Aggregation in SQL: A Powerful Tool for Data Transformation

SQL Query to Retrieve First and Last Dates in a Date Range from a Table

Understanding the Power of CASE Statements in SQL WHERE Clauses

Understanding Left Joining: How to Get All Records When You Need Them All

Understanding SQL Column Name Conflicts: How to Resolve and Avoid Them

Optimizing SQL Queries to Handle Multiple Values in Aggregation

Creating a Comprehensive Database with Primary and Foreign Keys in SQL Server Express

Running Second SELECT Statement Based on Result of First Statement Using CTEs

Understanding SQL Joins and Subqueries for Complex Queries: A Guide to Solving Tough Problems in Databases.