Question

Im reposting this problem in a simpler fashion, as I was getting comments about it being too specific:

Based on the following travel model relationships, how do I select all Itineraries with at least one Stop in Region X, and still have the query return ALL the Stops for that Itinerary, even if the other Stops are in Regions other than X

I’m using Php and MySQL and Doctrine.

Region HAS MANY Country
Country HAS MANY Area
Area HAS MANY Property
Property HAS MANY Stop 
Itinerary HAS MANY Stop

Answer 1

SELECT * from Itinerary where id in(
SELECT DISTINCT Itinerary.id
FROM Itinerary
LEFT JOIN Stop on Itinerary.something = Stop.something
LEFT JOIN Property ON Stop.something=Property.something
LEFT JOIN Area ON Area.something=Property.something
LEFT JOIN Country ON Country.something=Area.something
LEFT JOIN Region ON Region.something = Country.something
WHERE Region.something = X)