You can use a correlated subquery to get rid of the duplicates.įirst let me briefly tell you how a correlated subquery works. If you already have a identity column on your table, your work is half done.
Prerequisite of each of these methods along with its pros and cons. There are different methods for deleting duplicate (de-duplication) records fromĪ table, each of them has its own pros and cons.
In this tip I discuss different strategies which you can take for this, along with We need to get rid of these duplicate records keeping only one of them in the table. To make the table data consistent and accurate Or even in OLTP (On Line Transaction Processing) applications we are often encountered In data warehousing applications during ETL (Extraction, Transformation and Loading) In this educational webinar, we will cover some of the common issues you may face when working with SQL Server and some of the ways you can troubleshoot these issues. Free MSSQLTips Webinar: Troubleshooting the most common SQL Server Problems
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