Joining Two Different Rows in SQL Server: A Technique for Row Merging

Counting Customers by Status Per Month: Optimized Query to Exclude Days and Months with No Registrations

Optimizing Date Manipulation in T-SQL Stored Procedures Using DATEADD()

How to Handle Duplicate Data in SQL: Using Various Techniques for Clean Data Sets

Understanding SQL Update Statements with Joining Tables: A Comprehensive Guide

Finding the Last Change Value: A Comprehensive Guide to Using LAG and LEAD in SQL Queries

Importing Structured XML Files into SQL Tables: Best Practices and Optimized Queries

Understanding SQL PIVOT Tables for Displaying Multiple Dates

Dynamic Pivoting and Aggregate Functions for Efficient Data Transformation in SQL

Optimizing Data Copy with Windowed Functions in SQL Server