Similarly, if your work also includes deleting duplicate rows there are additional CTEs (common table expressions) that can execute that body of work. Depending on the size of your table, the level of granularity you need to provide and what the business decision is after you’ve located the duplicate records, each of these techniques may be used over another in different contexts. Make sure you know how to clean it up quickly and easily. ![]() To overcome with this problem we use DISTINCT keyword. How to Find and Delete Duplicates in SQL Home Programming How to Find and Delete Duplicates in SQL By Mary Gathoni Published Even if youre careful, duplicate data can end up in your database. Using the Distinct Keyword to eliminate duplicate values and count their occurences from the Query results. ![]() By duplicate rows I mean two or more rows that share exactly the same values across all columns. You make sure that you are fetching unique records instead of fetching duplicate records. Here are four methods you can use to find duplicate rows in SQL Server. Overall, all of these methods are important and can be used to locate duplicate records. If you have got a situation that you have multiple duplicate records in a table, so at the time of fetching records from the table you should be more careful. The drawback of using this method is that we can not easily identify which user record was created in the database first. Here, we can see that Carlo Thomas has a TRUE value in the is_duplicated field created by the CASE statement in the query above. This method would return the following result: user_id
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