How to Delete Duplicate Rows in sql

There are many ways to identify and delete duplicate rows in SQL. The best way to achieve this would be by using the ROW_NUMBER over Partition by column list. This will partition the table properly with segregating the duplicate records and the unique records will have the row numbers as 1 so that finally we could use delete statement with row number greater than 1.

CTE Query Syntax to delete duplicate records in SQL

Let us look at the below example to delete the duplicate rows in SQL

Employee Table with Duplicate Records:
Delete Duplicate Records in Sql

Query to Delete duplicates rows in SQL

The output from the above query after executing will look like this.

Delete Duplicate Rows in sql

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