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MS SQL Server - UPDATE statement

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Created by:

Huzaifa-Ball

475

In this article, we would like to show you how to use UPDATE statement in MS SQL Server.

Quick solution:

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UPDATE [table_name]
SET [column1] = value1, [column2] = value2, ...
WHERE condition;

Note:

Be careful when updating records. If you omit the WHERE clause, all records will be updated!

Practical example

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To show how the UPDATE statement works, we will use the following table:

Note:

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

Example

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In this example, we will update information about moderator Chris.

Query:

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UPDATE [users] 
SET [name] = 'Christopher' , [role] = 'admin' 
WHERE [id] = 2;

Output:

Database preparation

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create_tables.sql file:

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CREATE TABLE [users] (
    [id] INT IDENTITY(1,1),
    [name] VARCHAR(100) NOT NULL,
    [role] VARCHAR(15) NOT NULL,
    PRIMARY KEY ([id])
);

insert_data.sql file:

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INSERT INTO [users]
    ([name], [role])
VALUES
    ('John', 'admin'),
    ('Chris', 'moderator'),
    ('Kate', 'user'),
    ('Denis', 'moderator');