How to Get First Record (Earliest VALIDFROM) and Last Record (Latest VALIDTO) for a Specific Staff ID in SQL

Using SQL Server's PIVOT Statement to Handle Zero Values in Count() Functions

Using Common Table Expressions for Complex Joins Involving Multiple Conditions and Sets of Data

How to Use SQL Server Pivot Clause with Count: A Step-by-Step Guide

Pulling Previous Month Data from SQL Server 2016 Using the LAG Function

Simplifying Conditional Logic in Stored Procedures: A Step-by-Step Solution to Avoiding Precedence Issues

Designing Database Tables for Entities, Chapters, and Sections: A Comprehensive Guide to Relationships and Best Practices

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

Validating Columns in SQL Server: A Deep Dive into Triggers and Constraints for Improved Data Integrity and Security

Separating Characters and Numbers from Words Using SQL Server Queries