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MySQL - delete row where column is empty string (blank)
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In this article, we would like to show you how to delete a row where the column is an empty string in MySQL.
Quick solution:
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DELETE FROM `table_name` WHERE `column_name` = '';If your column is NULL then the below query works:
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DELETE FROM `table_name` WHERE `column_name` IS NULL;To show how to delete rows with an empty string values, 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 rows from users table with empty email column.
Query:
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DELETE FROM `users` WHERE `email` = '';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
`email` VARCHAR(50),6
PRIMARY KEY (`id`)7
);insert_data.sql file:
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INSERT INTO `users`2
( `name`, `surname`, `email`)3
VALUES4
('John', 'Stewart', 'john@email.com'),5
('Chris', 'Brown', ''),6
('Kate', 'Lewis',''),7
('Ailisa', 'Gomez', 'ailisa@email.com'),8
('Gwendolyn', 'James', ''),9
('Simon', 'Collins', ''),10
('Taylor', 'Martin',''),11
('Andrew', 'Thompson', 'andrew123@email.com');