mysql - 想在子查询中使用 between 子句

Question

我想要申请休假表格“2016-03-16”日期到“2016-03-25”日期的员工记录。但是当我写我的查询时，我会在 where 条件中提到 between 子句，就像我提到日期一样

select * from leave_form 
where from_date and to_date between '2016-03-16' and '2016-03-25' 
     and status='yes' and emp_code='K0209';

它会向我显示结果

type, emp_code, rm_id, leave_bal, from_date, leave_from, to_date,   leave_to, number, leave_for, status, applied_date, pendays,  personal,
K0209, K0093, 10, 2016-03-16, full day, 2016-03-25, full day, 10, personal, yes, 2016-03-15, 

而且当我写我的查询时

 select * from leave_form 
 where from_date and to_date between '2016-03-17' and '2016-03-17' 
     and status='yes' and emp_code='K0209';

它必须向我显示相同的结果，表明您已经申请了这个日期。即它将显示相同的结果：

type, emp_code, rm_id, leave_bal, from_date, leave_from, to_date, leave_to, number, leave_for, status, applied_date, pendays
personal, K0209, K0093, 10, 2016-03-16, full day, 2016-03-25, full day, 10, personal, yes, 2016-03-15, 

Answer 1

你的问题令人困惑。这有帮助吗...

select * 
   from leave_form 
 where from_date  > '2016-03-16' 
   and to_date    < '2016-03-25' 
   and status   ='yes' 
   and emp_code ='K0209';