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MS SQL Server - Column name aliases
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In this article, we would like to show you how to use aliases in MS SQL Server.
Quick solution:
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SELECT [column_name] AS [alias_name]
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FROM [table_name];
Aliases are used to give a table or a column in the table a temporary name to make it more readable. They only exist for the duration of a query.
We create aliases using AS
keyword.
To show how aliases work, 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 the average salary.
Query:
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SELECT AVG([salary]) AS [average_salary]
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FROM [users];
Output:

In this example, we will display the number of users.
Query:
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SELECT COUNT(*) AS [number_of_users]
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FROM [users];
Output:

create_tables.sql
file:
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CREATE TABLE [users] (
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[id] INT IDENTITY(1,1),
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[name] VARCHAR(50) NOT NULL,
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[surname] VARCHAR(50) NOT NULL,
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[department_id] INT,
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[salary] DECIMAL(15,2) NOT NULL,
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PRIMARY KEY ([id])
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);
insert_data.sql
file:
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INSERT INTO [users]
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( [name], [surname], [department_id], [salary])
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VALUES
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('John', 'Stewart', 1, '3512.00'),
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('Chris', 'Brown', 2, '1344.00'),
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('Kate', 'Lewis', 3, '6574.00'),
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('Ailisa', 'Gomez', NULL, '6500.00'),
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('Gwendolyn', 'James', 2, '4200.00'),
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('Simon', 'Collins', 4, '3320.00'),
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('Taylor', 'Martin', 2, '1500.00'),
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('Andrew', 'Thompson', NULL, '2100.00');