按日期選擇最晚日期與最早日期對(duì)應(yīng)的數(shù)的差值
發(fā)布日期：2022-01-30 16:28 | 文章來源：站長之家
number date
8 2009/1/11 2:00
7 2009/1/11 5:00
6 2009/1/11 12:00
5 2009/1/11 18:00
4 2009/1/12 4:00
3 2009/1/12 10:00
2 2009/1/12 12:00
1 2009/1/11 17:00 想得到當(dāng)天的最早時(shí)間與最晚時(shí)間的number的差值， 即如下的結(jié)果: 差
2
3
create table #date
(
number int identity(1,1) primary key,
date datetime
)
insert into #date select '2009/1/11 17:00'
insert into #date select '2009/1/12 12:00'
insert into #date select '2009/1/12 10:00'
insert into #date select '2009/1/12 4:00'
insert into #date select '2009/1/11 18:00'
insert into #date select '2009/1/11 12:00'
insert into #date select '2009/1/11 5:00'
insert into #date select '2009/1/11 2:00' select (d2.number-d1.number) number
from
(
select number,date from #date where date in
(select max(date) from #date group by convert(varchar(10),date,120) )
) d1
,
(
select number,date from #date where date in
(select min(date) from #date group by convert(varchar(10),date,120) )
) d2
where convert(varchar(10),d1.date,120)=convert(varchar(10),d2.date,120)
number
-----------
2
3
8 2009/1/11 2:00
7 2009/1/11 5:00
6 2009/1/11 12:00
5 2009/1/11 18:00
4 2009/1/12 4:00
3 2009/1/12 10:00
2 2009/1/12 12:00
1 2009/1/11 17:00 想得到當(dāng)天的最早時(shí)間與最晚時(shí)間的number的差值， 即如下的結(jié)果: 差
2
3
復(fù)制代碼 代碼如下:
create table #date
(
number int identity(1,1) primary key,
date datetime
)
insert into #date select '2009/1/11 17:00'
insert into #date select '2009/1/12 12:00'
insert into #date select '2009/1/12 10:00'
insert into #date select '2009/1/12 4:00'
insert into #date select '2009/1/11 18:00'
insert into #date select '2009/1/11 12:00'
insert into #date select '2009/1/11 5:00'
insert into #date select '2009/1/11 2:00' select (d2.number-d1.number) number
from
(
select number,date from #date where date in
(select max(date) from #date group by convert(varchar(10),date,120) )
) d1
,
(
select number,date from #date where date in
(select min(date) from #date group by convert(varchar(10),date,120) )
) d2
where convert(varchar(10),d1.date,120)=convert(varchar(10),d2.date,120)
number
-----------
2
3
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