<!--int updateStreamBoxes(@Param("list") List<SBox> list);-->
    <update id="updateStreamBoxes" parameterType="list">
        update stream_box
        <trim prefix="set" suffixOverrides=",">
            <trim prefix="use_state =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.useState}
                </foreach>
            </trim>
            <trim prefix=" set_id =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.setId}
                </foreach>
            </trim>
            <trim prefix=" pre_set_id =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.preSetId}
                </foreach>
            </trim>
            <trim prefix=" pre_use_capability =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.preUseCapability}
                </foreach>
            </trim>
            <trim prefix=" last_set_id =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.lastSetId}
                </foreach>
            </trim>
            <trim prefix=" last_use_capability =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when stream_box_id=#{i.streamBoxId} then #{i.lastUseCapability}
                </foreach>
            </trim>
        </trim>
        where
        <foreach collection="list" separator="or" item="i" index="index" >
            id=#{i.streamBoxId}
        </foreach>
    </update>

其中白色字体部分中，带_下划线部分是数据库中的字段，驼峰命名的是数据库字段对应的javaBean的属性。