推荐回答(4个)
select 姓名,编号,datepart(day,打卡时间) from 表
group by 姓名,编号,datepart(day,打卡时间)
having count(*)<>2
这样就好了,我们公司现在做的就是考勤系统,如果有问题可以HI我继续交流
用exists吧。
如果只有一笔
如果当天2笔
如果当天3笔等等,多搞几个sql。
我建议你把打卡日期转换成数值类型,日期格式太难比较了。
数据如下:
姓名 编号 打卡时间
钱广 H033 40238.324224537
钱广 H033 40238.6956597222
钱广 H033 40239.0670949073
钱广 H033 40239.4385300926
钱广 H033 40239.8099652778
钱广 H033 40240.181400463
钱广 H033 40240.5528356482
钱广 H033 40240.9242708334
赵常 H053 40241.2957060185
赵常 H053 40241.6671412037
赵常 H053 40242.0385763889
赵常 H053 40242.4100115741
赵常 H053 40242.7814467593
赵常 H053 40243.1528819445
赵常 H053 40243.5243171297
赵常 H053 40243.8957523149
赵常 H053 40244.2671875001
周青 S016 40244.6386226852
周青 S016 40245.0100578704
周青 S016 40245.3814930556
周青 S016 40245.7529282408
周青 S016 40246.124363426
周青 S016 40246.4957986112
周青 S016 40246.8672337964
周青 S016 40247.2386689816
周青 S016 40247.6101041667
周青 S016 40247.9815393519
周青 S016 40248.3529745371
再以时间段来筛选,比如早上8点之前打卡,选最早的,那么就是where 小数部分<0.3333333,选择最小的min(打卡记录)
sql语句如:
Select min(打卡日期) from 考勤表 where 打卡日期<40247.33333 and 打卡日期>40247 group by 姓名,编号
用group by对姓名、打卡时间分组,用count记数,找出每人每天打卡次数小于不等于2的。(你单位没有跨天倒班的吧)
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