![]() I published more than 650 technical articles on MSSQLTips, SQLShack, Quest, CodingSight, and SeveralNines. ![]() I am the author of the book " DP-300 Administering Relational Database on Microsoft Azure". Hi! I am Rajendra Gupta, Database Specialist and Architect, helping organizations implement Microsoft SQL Server, Azure, Couchbase, AWS solutions fast and efficiently, fix related issues, and Performance Tuning with over 14 years of experience. However, I would suggest not to implement these procedures and package on the production data directly. You can use the method in which you feel comfortable. In this article, we explored the process of SQL delete duplicate rows using various ways such as T-SQL, CTE, and This data viewer, you can see distinct data after removing the duplicate values.Ĭlose this and the SSIS package shows successfully executed. It opens the Sort output data viewer at the Data flow task. The overall SSIS package looks like below.Įxecute the package to perform SQL delete operation. ![]() To view the distinct data, right-click on the connector between Sort and Multicast. We only want to check that sort operator is doing the task for us or not. We can add SQL Server destinations to store the data after removing duplicate rows. Once we click OK, it returns to the data flow tab, and we can see the following SSIS package. It performs the SQL delete activity in the SSIS package. Let’s put a tick in this checkbox andĬlick ok. It will do the task of removing duplicate rows for us from the source data. On the bottom left side, notice a checkbox Remove rows with duplicate sort values. Sort order 1 shows the column which will be sorted first. The sort order, we can choose the column sort order. We can also use the ascending or descending sorting types for the columns. In our case, duplicate value is in, , columns. Open OLE DB source editor and configuration the source connection and select the destination tableĬlick on Preview data and you can see we still have duplicate data in the source tableĪdd a Sort operator from the SSIS toolbox for SQL delete operation and join it with the source dataįor the configuration of the Sort operator, double click on it and select the columns that contain duplicate values. In the new package, add an OLE DB source connection In SQL Server Data Tools, create a new Integration package. Let’s create the SSIS package to show this task. You might ask how data sorting can remove duplicate We can use a Sort operator to sort the values in a SQL table. Use Sort Operator in an SSIS package for removing duplicating rows ![]() SSIS package can remove the duplicate rows from a SQL SQL Server integration service provides various transformation, operators that help both administrators and developers in reducing manual effort and optimize the tasks. Use SSIS package to SQL delete duplicate rows Let’s create a sample Employee table and insert a few records in it. This article explores the different methods to remove duplicate data from the SQL table. We need to follow specific methods to clean up duplicate data. 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. Suppose your SQL table contains duplicate rows and you want to remove those 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. Even we follow the best practices, and we might face issues such as duplicate rows. For example, a table should have primary keys, identity columns, clustered and non-clustered indexes, constraints to ensure data integrity and performance. We should follow certain best practices while designing objects in SQL Server. This article explains the process of performing SQL delete activity for duplicate rows from a SQL table. ![]()
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