在Doctrine2中JOIN ON和JOIN WITH有什么区别？

Question

在Doctrine2中JOIN ON和JOIN WITH有什么区别？

我在手册中找不到任何相关信息.

Answer 1

ON替换原始连接条件,
WITH为其添加条件.

示例:

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

1. 案例一

   DQL

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

   将在SQL中翻译

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

2. 案例二

   DQL

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

   将在SQL中翻译

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