The following query is useful to delete duplicate rows. The table in this example has ID as an identity column and the columns which have duplicate data are Column1, Column2 and Column3.

5 days ago · There are several ways to delete duplicate rows in SQL. Here, we will explain five methods to handle this task effectively. 1. Using GROUP BY and COUNT () Use the GROUP …

Jan 10, 2025 · This article provides a script that you can use to remove duplicate rows from a SQL Server table.

In this article, we explored the process of SQL delete duplicate rows using various ways such as T-SQL, CTE, and SSIS package. You can use the method in which you feel comfortable.

SQL delete duplicate rows Deleting duplicate rows in a database table is a common task in SQL, and it’s important for maintaining data integrity. Duplicate rows can occur for various reasons, …

Oct 29, 2024 · SQL Remove Duplicates: Comprehensive Methods and Best Practices Explore the different methods for filtering out and permanently removing duplicate rows using SQL. Learn …

3 days ago · Duplicate rows in SQL Server tables are a common headache for database administrators and developers. They can skew analytics, waste storage, and cause application …

Jun 27, 2025 · In this tutorial, we’ll explore different methods to delete all the identical rows in SQL. Note that before executing any DELETE statement on the database, make sure to back …

Oct 22, 2025 · Delete duplicate rows in SQL is important for database optimization and reliability. In this blog, we will discuss the process and resolve it with multiple SQL queries. Moreover, we …

The SQL DISTINCT keyword is a simple but powerful tool to remove duplicate rows from query results. When you want unique values — for example, a list of unique countries from a …