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MS SQL Server - Delete query
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In this article, we would like to show you how to make DELETE query in MS SQL Server.
Quick solution:
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DELETE FROM [table_name]2
WHERE [column_name] = some_value;Note:
where
some_valueis either a number or a string wrapped with single quotation marks''.
To show how DELETE 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 delete user whose id = 8.
Query:
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DELETE FROM [users]2
WHERE [id] = 8;Result:
In this example, we will delete user whose name = John.
Query:
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DELETE FROM [users]2
WHERE [name] = 'John';Result:
create_tables.sql file:
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CREATE TABLE [users] (2
[id] INT IDENTITY(1,1),3
[name] VARCHAR(50) NOT NULL,4
[surname] VARCHAR(50) NOT NULL,5
[department_id] INT,6
[salary] DECIMAL(15,2) NOT NULL,7
PRIMARY KEY ([id])8
); insert_data.sql file:
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INSERT INTO [users]2
( [name], [surname], [department_id], [salary])3
VALUES4
('John', 'Stewart', 1, '3512.00'),5
('Chris', 'Brown', 2, '1344.00'),6
('Kate', 'Lewis', 3, '6574.00'),7
('Ailisa', 'Gomez', NULL, '6500.00'),8
('Gwendolyn', 'James', 2, '4200.00'),9
('Simon', 'Collins', 4, '3320.00'),10
('Taylor', 'Martin', 2, '1500.00'),11
('Andrew', 'Thompson', NULL, '2100.00');