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MS SQL Server - SELECT DISTINCT statement
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In this article, we would like to show you how to use SELECT DISTINCT statement in MS SQL Server.
Quick solution:
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SELECT DISTINCT [column1], [column2], [columnN]2
FROM [table_name];To show how the SELECT DISTINCT statement works, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will display unique countries from the users table.
Query:
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SELECT DISTINCT [country]2
FROM [users];Output:
create_tables.sql file:
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CREATE TABLE [users] (2
[id] INT IDENTITY(1,1),3
[name] VARCHAR(100) NOT NULL,4
[country] VARCHAR(15) NOT NULL,5
PRIMARY KEY ([id])6
); insert_data.sql file:
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INSERT INTO [users]2
([name], [country])3
VALUES4
('Tom', 'Poland'),5
('Chris', 'Belgium'),6
('Jack', 'Belgium'),7
('Kate', 'Algeria'),8
('Denis', 'Germany'),9
('Matt', 'Germany');