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MS SQL Server - find duplicated values

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Created by:
Huzaifa-Ball
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In this article, we would like to show you how to find duplicated values in MS SQL Server.

Quick solution:

Practical example

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To show how to find duplicated values, we will use the following table:

MS SQL Server - example data used to find duplicated values
MS SQL Server - example data used to find duplicated values

Note:

At the end of this article you can find database preparation SQL queries.

Example

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In this example, we will display the number of names that are duplicated in users table.

Query:

Result:

MS SQL Server - find and count duplicated values
MS SQL Server - find and count duplicated values

Database preparation

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create_tables.sql file:

insert_data.sql file:

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MS SQL Server - find duplicated values
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