sql - 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
where phone like '813%'
and phone2

I'm trying to select only the rows where phone starts with 813 and phone2 has something in it.

Answer 1

Compare value of phone2 with empty string:

select phone, phone2 
from jewishyellow.users 
where phone like '813%' and phone2<>''

Note that NULL value is interpreted as false.