Optimizing SQL Queries by Avoiding Sub-Queries in the WHERE Clause and Using Window Functions

Understanding SQL Joins and Subqueries

Extracting X and Y Coordinates from Geometry Data in SQL Server 2012

Optimizing MERGE Statements: The Role of Temporary Tables in SQL Server Performance

Mastering Row Numbers and Aggregate Functions: A SQL Tutorial for Data Transformation

Identifying Rows with Duplicate Column Values in SQL Using Group By Clause and Its Variations.

Effective Duplicate Data Detection Using HAVING, GROUP BY, DENSE_RANK(), and ROW_NUMBER()

Understanding SQL Over Clause and Partitioning Strategies for Efficient Data Management

Understanding the SQL LAG Function for Shifting Columns Down with Window Functions in SQL

How to Use UNION ALL with Implicit Data Type Conversions in SQL Server