How to remove duplicate values from a table in SQL? Example

In the world of data management, duplicate values can be a persistent nuisance. Duplicate records not only clutter your database but can also lead to erroneous results and performance issues when querying or analyzing data. Fortunately, SQL provides a powerful set of tools for identifying and removing duplicate values from a table. In this comprehensive guide, we will explore various techniques and best practices for deduplicating your data using SQL.

What is Window Functions in SQL? Rank, Row_Number, and Dense_Rank? How to use it and Performance Analysis

T-SQL (Transact-SQL) window functions are a category of functions in Microsoft SQL Server that perform calculations across a specified range of rows related to the current row within a result set. These functions operate on a set of rows that are defined by an OVER clause in the query, allowing for more advanced and flexible analytical processing compared to traditional aggregate functions.