DELETE DUPLICATE ROWS FROM A TABLE IN SQL
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We should follow certain best practices while designing objects in SQL Server. For example, a table should have primary keys, identity columns, clustered and non-clustered indexes, constraints to ensure data integrity and performance. Even we follow the best practices, and we might face issues such as duplicate rows. We might also get these data in intermediate tables in data import, and we want to remove duplicate rows before actually inserting them in the production tables.
Suppose your SQL table contains duplicate rows and you want to remove those duplicate rows. Many times, we face these issues. It is a best practice as well to use the relevant keys, constrains to eliminate the possibility of duplicate rows however if we have duplicate rows already in the table. We need to follow specific methods to clean up duplicate data.
we get those records having occurrence greater than 1 in the Employee table.
Here I have discuss 4 ways to get delete duplicate rows in sql
