What is the difference between JOIN ON and JOIN WITH in Doctrine2?

问题

What is the difference between JOIN ON and JOIN WITH in Doctrine2?

I couldn't find any relevant info in the manual.

回答1:

ON replaces the original join condition,
WITH adds a condition to it.

---

Example:

[Album] ---OneToMany---> [Track]

1. Case One

   DQL

   FROM Album a LEFT JOIN a.Track t WITH t.status = 1
   

   Will translate in SQL

   FROM Album a LEFT JOIN Track t ON t.album_id = a.id AND t.status = 1
   

2. Case Two

   DQL

   FROM Album a LEFT JOIN a.Track t ON t.status = 1
   

   Will translate in SQL

   FROM Album a LEFT JOIN Track t ON t.status = 1
   

来源：https://stackoverflow.com/questions/13137908/what-is-the-difference-between-join-on-and-join-with-in-doctrine2