mysql 批量更新的问题

<update id="updateList" parameterType="java.util.List">  
        <foreach close=";" collection="list" index="index" item="record" open="" separator=";">  
            update A set value=#{record.value,jdbcType=VARCHAR}  
            where detail_id=#{record.detailId,jdbcType=BIGINT} AND org_id=#{record.orgId,jdbcType=BIGINT} AND l_date=#{record.lDate,jdbcType=INTEGER} AND location=#{record.location,jdbcType=VARCHAR}
        </foreach>
</update> 

类似这种,如果 list 里面的数据上万,那么是直接一次性执行,还是分批次执行(比如每次更新 100 条)比较好 /