Sorry about the minimalistic title but I don't know how to describe it in short. I have three tables:
The table of groups
ID | Genre
-----------------
1 | Action
2 | Adventure
3 | Drama
Many to many table
GroupID | ElementID
-----------------
3 | 1
1 | 2
2 | 2
2 | 3
3 | 3
And the table of elements
ID | Element
-----------------
1 | Pride and Prejudice
2 | Alice in Wonderland
3 | Curious Incident Of A Dog In The Night Time
All is fine and very simple. The SELECT I am trying to achieve is the following
ID | Element | Genre
-------------------------------------------------------------
1 | Pride and Prejudice | Drama
2 | Alice in Wonderland | NULL
3 | Curious Incident Of A Dog In The Night Time | Drama
I want to select all the elements from the table Elements and set the genre field to Drama or null.
I'm trying to do this in MySQL.
Thank you in advance