I have 3 tables:
Persons (PersonID, Name, SS) Fears (FearID, Fear) Person_Fear (ID, PersonID, FearID)
Now I'd like to list every person with whatever fear is linked to them (can be multiple fears but can also be none). The persons table has to be shown even if a person doesn't have a fear linked to them.
I think I need to do a LEFT JOIN, but my code doesn't seem to work:
SELECT persons.name,
persons.ss,
fears.fear
FROM persons
LEFT JOIN fears
ON person_fear.personid = person_fear.fearid
What am I doing wrong here?
You are trying to join Person_Fear.PersonID
onto Person_Fear.FearID
- This doesn't really make sense. You probably want something like:
SELECT Persons.Name, Persons.SS, Fears.Fear FROM Persons
LEFT JOIN Person_Fear
INNER JOIN Fears
ON Person_Fear.FearID = Fears.FearID
ON Person_Fear.PersonID = Persons.PersonID
This joins Persons
onto Fears
via the intermediate table Person_Fear
. Because the join between Persons
and Person_Fear
is a LEFT JOIN
, you will get all Persons
records.
Alternatively:
SELECT Persons.Name, Persons.SS, Fears.Fear FROM Persons
LEFT JOIN Person_Fear ON Person_Fear.PersonID = Persons.PersonID
LEFT JOIN Fears ON Person_Fear.FearID = Fears.FearID