MySQL select where column is not empty

Question

In MySQL, can I select columns only where something exists?

For example, I have the following query:

select phone, phone2
from jewishyellow.users
wh         


        

Answer 1

To check if field is NULL use IS NULL, IS NOT NULL operators.

MySql reference http://dev.mysql.com/doc/refman/5.0/en/working-with-null.html