Select rows where column is null

Question

How do you write a SELECT statement that only returns rows where the value for a certain column is null?

Answer 1

for some reasons IS NULL may not work with some column data type i was in need to get all the employees that their English full name is missing ,I've used :

**SELECT emp_id ,Full_Name_Ar,Full_Name_En from employees where Full_Name_En = ' ' or Full_Name_En is null **