在此示例中: p>
我们看到了 p>
< pre> 进行此查询: p>
< pre> 有没有办法只使用鉴别器“Person”查询记录? p>
这个: p >
返回所有记录。 p>
有什么想法吗? p>
div> SELECT e FROM Entities \ Employee e WHERE e.name ='test'
code> pre>
SELECT p0_.id AS id0,p0_.name AS name1,p0_.department AS department2,
p0_discr AS discrimin3 FROM Person p0_ WHERE(p0_.name =?)AND p0_.discr IN('employee ')
code> pre>
SELECT e FROM Entities \ Person e WHERE e.name ='test'
code> pre>