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MySQL - Update all rows
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In this article, we would like to show you how to UPDATE all rows in MySQL.
Quick solution:
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UPDATE `table_name`2
SET `column_name`= value;Note:
To update all rows in MySQL you need to omit the
WHEREclause.
To show how to update all rows, we will use the following users table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will update department_id value for every user.
Query:
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UPDATE `users` SET `department_id`= 10;Result:
create_tables.sql file:
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CREATE TABLE `users` (2
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,3
`name` VARCHAR(50) NOT NULL,4
`surname` VARCHAR(50) NOT NULL,5
`department_id` INT(10) UNSIGNED,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', 1, '6500.00'),8
('Gwendolyn', 'James', 2, '4200.00'),9
('Simon', 'Collins', 4, '3320.00'),10
('Taylor', 'Martin', 2, '1500.00'),11
('Andrew', 'Thompson', 1, '2100.00');