Mybatis批量插入oracle,mysql

oracle 

<insert id="addUserData" parameterType="java.util.List">
    INSERT INTO T_P_USER_DATA (USER_ID, DEPART_ID)
    <foreach collection="list" item="item" index="index" separator=" UNION ALL ">
    SELECT #{item.userId}, #{item.departId} FROM DUAL
    </foreach>
</insert> 

mysql

<insert id="addUserData" parameterType="java.util.List">
    INSERT INTO T_P_USER_DATA (USER_ID, DEPART_ID)
    VALUES <foreach collection="list" item="item" index="index"
    separator=",">
    ( #{item.userId}, #{item.departId})
    </foreach>
</insert>