MySQL – Delete Rows from Table where Column is NULL

To delete rows of a table where the value of a specific column is NULL in MySQL, use SQL DELETE statement with WHERE clause and the condition being the column value is NULL.

The following is a simple syntax of DELETE statement with WHERE clause to delete rows from table where there is NULL in the column.

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DELETE FROM table_name column_name IS NULL ;

where

  • table_name is the table name from which we would like to delete the rows.
  • column_name is the name of column whose value has to be checked if it is NULL.

Examples

In the following example, we will consider a table students and remove the rows where there is NULL in the name field/column.

“students” table before DELETE

name	rollno
Arjun	14
Manish	15
Vina	16
NULL	17
NULL	18

SQL Query

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DELETE FROM students WHERE name IS NULL;

Response

2 row(s) affected

“students” table after DELETE

name	rollno
Arjun	14
Manish	15
Vina	16