Understanding the Performance Bottleneck of a Simple SELECT Query: How Indexing Can Improve Query Performance

Comparing Two SQL Server Tables and Inserting to a Column

Optimizing SQL Queries to Handle Multiple Values in Aggregation

Using Case Expression in Scalar Functions: A Revised Solution for SQL Server

Understanding Variable Declaration in Stored Procedures: Best Practices and Limitations

Understanding Date and Time Data Types and Solving Common Problems When Selecting Data from a Date Range

Creating Equal Sized, Random Buckets with No Repetition to Row: A SQL Solution for Optimized Task Scheduling and Activity Distribution

Calculating Total Time Spent at Specific Locations Within a Date Column for Tags with Multiple Consecutive Minutes.