字典的SQL别名返回重复的结果

I have following class

我有下课

<class name="Product" table="Product">
<id name="ID" />
...
<map name="CustomFields" table="CustomFieldView">
     <key column="RECORDID" />
     <map-key column="CFName" type="String" />
     <element column="CFValue" type="String" />
</map>
</class>
<class name="P