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MS SQL Server - find row with null value in column
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In this article, we would like to show you how to find rows with NULL
value in one of the columns in MS SQL Server.
Quick solution:
SELECT *
FROM [table_name]
WHERE [column_name] IS NULL;
Sometimes your data can be an empty string. You can select such rows with the below query:
SELECT FROM [table_name] WHERE [column_name] = '';
Practical example
To show how to find rows with NULL
value in one of the columns, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
Example
In this example, we will select rows from users
table with NULL
value in email
column.
Query:
SELECT *
FROM [users]
WHERE [email] IS NULL;
Result:
Database preparation
create_tables.sql
file:
CREATE TABLE [users] (
[id] INT IDENTITY(1,1),
[name] VARCHAR(50) NOT NULL,
[surname] VARCHAR(50) NOT NULL,
[email] VARCHAR(50),
PRIMARY KEY ([id])
);
insert_data.sql
file:
INSERT INTO [users]
( [name], [surname], [email])
VALUES
('John', 'Stewart', 'john@email.com'),
('Chris', 'Brown', NULL),
('Kate', 'Lewis', NULL),
('Ailisa', 'Gomez', 'ailisa@email.com'),
('Gwendolyn', 'James', NULL),
('Simon', 'Collins', NULL),
('Taylor', 'Martin', NULL),
('Andrew', 'Thompson', 'andrew@email.com');