数据库查询有关问题
数据库查询问题.在线等
数据表checkwork
userid startdate enddate remark
1 2011-11-01 2011-11-03 请假
1 2011-11-25 2011-11-26 因公外出
2 2011-11-04 2011-11-06 节假日
我现在需要查出11月份,userid为1的人的,“请假”的天数并显示出来,怎么实现啊??sql语句怎么写??...
------解决方案--------------------
SELECT COUNT(`remark`) AS 'Total' FROM `checkwork` WHERE `Userid`=1 GROUP BY `remark`;
------解决方案--------------------
再给一个比较直观(把sql那段注销掉)的,希望能帮到你,这个应该算伪代码
- PHP code
<?php $startime="2011-11-11";//指定开始日期 $endtime="2011-12-02";//指定结束日期 Checkwork($startime,$endtime); function Checkwork($startime,$endtime){ while($startime<=$endtime){ /* * 按上面的sql语句提取出$reamk的值 * $sql="select * from checkwork where userid='1' and startdate<='$startime' and enddate>='$startime'"; * $rs = $conn->Execute($sql); * $remak=$rs->Fields['remak']->Value; */ echo $startime."-------备注".$remak."<br>";//读出日期与备注字段 $startime=date('Y-m-d',strtotime($startime)+86400); } } ?> <div class="clear"> </div>

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