用原生sql查询为什么实体类中存在该字段，但为什么还是报错列名无效

    这是dao层
    ds = HibernateDataSource.getHibernateDataSource();
    session = ds.getSession();
    String sql1="SELECT CHANNEL_ID FROM JC_CHANNEL WHERE PARENT_ID='"+ channelId + "'";
    SQLQuery sqlQuery1 = session.createSQLQuery(sql1.toString());
    List<Channel> channelList = sqlQuery1.addScalar("id",Hibernate.INTEGER).setResultTransformer(Transformers.aliasToBean(Channel.class)).list();
    List idList=new ArrayList();
    这是配置文件中
    <class name="Channel" table="jc_channel" dynamic-update="true">
    <meta attribute="sync-DAO">false</meta>
    <cache usage="read-write"/>
    <id name="id" type="java.lang.Integer" column="channel_id">
        <!-- <generator class="identity"/>-->
        <generator class="sequence">
            <param name="sequence">SEQ_JC_CHANNEL</param>
        </generator>
    </id>
    <property name="path" column="channel_path" type="string" not-null="false" length="30"/>
    <property name="lft" column="lft" type="integer" not-null="true" length="10"/>
    <property name="rgt" column="rgt" type="integer" not-null="true" length="10"/>
    <property name="priority" column="priority" type="integer" not-null="true" length="10"/>
    <property name="hasContent" column="has_content" type="java.lang.Boolean" not-null="true"/>
    <property name="display" column="is_display" type="java.lang.Boolean" not-null="true"/>
    <one-to-one name="channelExt" class="ChannelExt" cascade="delete"/>
    <many-to-one name="site" column="site_id" class="CmsSite" not-null="true"></many-to-one>
    <many-to-one name="model" column="model_id" class="CmsModel" not-null="true"></many-to-one>
    <many-to-one name="parent" column="parent_id" class="Channel" not-null="false"></many-to-one>
    <set name="child" inverse="true" cascade="delete" sort="com.jeecms.common.hibernate3.PriorityComparator">
        <cache usage="read-write"/>
        <key column="parent_id"/>
        <one-to-many class="Channel"/>
    </set>
    <set name="viewGroups" table="jc_chnl_group_view" sort="com.jeecms.common.hibernate3.PriorityComparator">
        <cache usage="read-write"/>
        <key column="channel_id"/>
        <many-to-many column="group_id" class="CmsGroup"/>
    </set>
    <set name="contriGroups" table="jc_chnl_group_contri" sort="com.jeecms.common.hibernate3.PriorityComparator">
        <cache usage="read-write"/>
        <key column="channel_id"/>
        <many-to-many column="group_id" class="CmsGroup"/>
    </set>
    <set name="users" table="jc_channel_user" sort="com.jeecms.common.hibernate3.PriorityComparator">
        <cache usage="read-write"/>
        <key column="channel_id"/>
        <many-to-many column="user_id" class="CmsUser"/>
    </set>
    <set name="channelTxtSet" inverse="true" cascade="delete-orphan">
        <cache usage="read-write"/>
        <key column="channel_id"/>
        <one-to-many class="ChannelTxt"/>
    </set>
    <map name="attr" table="jc_channel_attr" cascade="all-delete-orphan">
        <cache usage="read-write"/>
        <key column="channel_id" not-null="true"/>
        <map-key column="attr_name" type="string" length="30"/>
        <element column="attr_value" type="string" length="255"/>
    </map>
</class>