Question

I have two tables. One called “members” and another called “homes” (should be household, but I suck in english). Those have a many-one relation (i.e. several members belong to one household). Those are linked together by members.homefk and homes.Id

Now, how can I find homes that don’t belong to any members? I want this for house cleaning purposes.

Answer 1

SELECT homes.* 
FROM homes
LEFT JOIN members ON (members.home_id = home.id)
WHERE members.home_id IS NULL