mybatis关于oracle和mysql批量插入的区别

<insert id="batchAdd" parameterType="java.util.ArrayList">
INSERT INTO TB_TRAINS_ROLE_MENU_FUNC(RID,MID,FID)

<foreach collection="list" item="roleMenuFun" separator="union all">
select #{roleMenuFun.roleId},#{roleMenuFun.menuId},#{roleMenuFun.funId} from dual
</foreach>
</insert>

<insert id="batchAdd" parameterType="java.util.ArrayList">
INSERT INTO TB_V_MANAGE_ROLE_MENU_FUNC(RID,MID,FID)
VALUES
<foreach collection="list" item="roleMenuFun" separator=",">
(#{roleMenuFun.roleId},#{roleMenuFun.menuId},#{roleMenuFun.funId})
</foreach>
</insert>