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

Using Row Numbers to Simplify Data Manipulation and Analysis in T-SQL

Understanding Two-Digit Years and Why They Should be Avoided

Calculating Current YTD and Prior YTD Revenue for Any Given Month Using SQL

Understanding SQL LIKE with Wildcards: The Case of Accented Letters

How to Calculate Sum of Multiple Values by Months in One Table Using SQL Aggregation Functions

Assigning Ordinal Numbers to Rows with Non-Zero INV Values in SQL

Understanding Dot Navigation with Multiple Parameters in SQL SELECT Queries Using OPENJSON Function

Working with JSON Data in SQL Server: A Comprehensive Guide

Using Recursive Queries to Enumerate Weeks and Count Occurrences in SQL