mybaties 批量更新

<!-- 批量增加已分配數量 -->
<update id="batchUpdateDistributedNum" parameterType="java.util.List" flushCache="true" >
    <foreach collection="list" item="item" index="index" open="" close="" separator=";">
        update wave_good_detail
        <set>
            goods_num = goods_num - #{item.salesVolumes},
            undistributed_num =undistributed_num - #{item.salesVolumes},
            operate_time=CURRENT_TIMESTAMP
        </set>
        <where>
              pk_wave = #{item.pkWave}
              and  goods_code=#{item.goodsCode}
            <if test="item.supplier !=null and item.supplier !=''">
                and supplier=#{item.supplier}
            </if>
        </where>
    </foreach>
</update>