Converting NULL to Datetime in SQL Server: Understanding the Difference Between Char(0) and NULL

Understanding Subqueries vs INNER JOINs: When to Use Each

How to Send Excel Attachments with Merged Cells Using sp_send_dbmail in SQL Server

Understanding Unicode Collation: A Key to Resolving Entity Framework 6's Unique Constraint Issues in Databases

Extracting Start Dates and Times from a DateTime Range in SQL Server

Handling Aggregate Functions in Case Statements with Date Columns: A Solution Using Conditional Aggregation

Optimizing Query Performance: Using CTE with ROW_NUMBER() to Select First Row

Optimizing SQL Queries: A Deeper Look at LEFT JOIN and Temporary Tables for Better Performance

Counting and Grouping Data: A Deeper Dive into SQL Queries with Examples and Best Practices for Complex Data Sets

Creating a Computed Column in SQL Server to Calculate Distance Between Two Coordinates