No showing database rows with NO value in one column

Man this is hard to explain

I am filtering a database by php but i did not create the database, it is updated regularly

we do not wish to show data if it has NO value for Color or Size , however if any other field like Comment has No value we wish to show that record

can this be done

and is it done on the php side or in the database?

thanks

 

SELECT * FROM yourtable WHERE color != '' AND size != ''

Code (sql):

Like this?