具有distinct的条件的java hibernate连接将不起作用
当我运行时,我得到了预期实际查询的结果查询
实际查询(待生成、期望查询) 不同的[ID]
select distinct rc.* from ratecodeparam rcp , ratecodes rc where rc.travelfrom <= '2011-04-22' and rc.travelto >= '2011-04-25' and rc.id = rcp.p_id;
或
select distinct rc.* from ratecodeparam rcp join ratecodes rc on rc.travelfrom <= '2011-04-22' and rc.travelto >= '2011-04-25' and rc.id = rcp.p_id;
我想要
distinct rc.*
代码
我通过了密码,但距离rc*
session.createCriteria(RateCode.class)
.add(Restrictions.le("travelFrom", from.getTime()))
.createCriteria("rateCodeParams", "rcp")
list = crit.list();
费率代码。哈佛商学院。xml
<class catalog="hermes" name="com.RateCode" table="ratecodes">
<id name="rateCodeId" type="java.lang.Integer">
<column name="id"/>
<generator class="native"/>
</id>
<property name="code" type="string">
<column length="32" name="code" unique="true"/>
</property>
<set name="rateCodeParams" cascade="all, delete-orphan" order-by="param">
<key>
<column name="p_id" />
</key>
<one-to-many class="com.RateCodeParam" />
</set>
</class>
RateCodeParam。哈佛商学院。xml
<class catalog="hermes" name="com.RateCodeParam" table="ratecodeparam">
<id name="id" type="java.lang.Integer">
<column name="id"/>
<generator class="identity"/>
</id>
<many-to-one class="com.RateCode" name="rateCode" insert="false" fetch="join" update="false" >
<column name="p_id" />
</many-to-one>
</class>
# 1 楼答案
您的查询缺少联接,因为您没有向查询中添加联接。设置获取模式(setFetchMode)只会为现有连接添加更多细节。但在你的查询中,它并不存在
正确的查询可能如下所示: