EN
MS SQL Server - delete row where column is empty string (blank)
0 points
In this article, we would like to show you how to delete a row where the column is an empty string in MS SQL Server.
Quick solution:
xxxxxxxxxx1
DELETE FROM [table_name] WHERE [column_name] = '';If your column is NULL then the below query works:
xxxxxxxxxx1
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:
xxxxxxxxxx1
DELETE FROM [users] WHERE [email] = '';Result:
create_tables.sql file:
xxxxxxxxxx1
CREATE TABLE [users] (2
[id] INT IDENTITY(1,1),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:
xxxxxxxxxx1
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');