我有一个日期表,我在那里工作日。我需要从下一个数字1之前的1-20开始做生意。我该怎么做?这是我桌子的一个较小的版本:
Date Day BusinessDays
2015-05-01 Friday 1
2015-05-02 Saturday 2
2015-05-03 Sunday 2
2015-05-04 Monday 2
2015-05-05 Tuesday 3
2015-05-06 Wednesday 4
2015-05-07 Thursday 5
2015-05-08 Friday 6
2015-05-09 Saturday 7
2015-05-10 Sunday 7
2015-05-11 Monday 7
2015-05-12 Tuesday 8
2015-05-13 Wednesday 9
2015-05-14 Thursday 10
2015-05-15 Friday 11
2015-05-16 Saturday 12
2015-05-17 Sunday 12
2015-05-18 Monday 12
2015-05-19 Tuesday 13
2015-05-20 Wednesday 14
2015-05-21 Thursday 15
2015-05-22 Friday 16
2015-05-23 Saturday 17
2015-05-24 Sunday 17
2015-05-25 Monday 17
2015-05-26 Tuesday 17
2015-05-27 Wednesday 18
2015-05-28 Thursday 19
2015-05-29 Friday 20
*2015-05-30 Saturday 1
*2015-05-31 Sunday 1
*2015-06-01 Monday 1
*2015-06-02 Tuesday 2
*2015-06-03 Wednesday 3
我需要从1到20个工作日获取数据,并且不要包含从一个开始的数字(例如排除前面有*的行)。这需要是动态的。由于DayName将针对每个数字进行更改,因此我无法在where子句中包含该数字。
答案 0 :(得分:0)
让我假设您有一个约会日期,因此您需要从该日期到下一个“1”的所有内容。
select t.*
from datetable t
where t.date >= '2015-05-01' and
t.date < (select min(t2.date)
from datetable t2
where t2.date > '2015-05-01' and
t2.businessdays = 1
);