最近,在论坛中,遇到了不少比较难的sql问题,虽然自己都能解决,但发现过几天后,就记不起来了,也忘记解决的方法了。
所以,觉得有必要记录下来,这样以后再次碰到这类问题,也能从中获取解答的思路。
1、请问我这样的需求如何实现,看示很简单的问题,实现起来很复杂吗?
现在是这样的问题了
-
USE tempdb
-
IF OBJECT_ID(
'TEST')
IS
NOT
NULL
-
DROP
TABLE
TEST;
--> 如果表TEST不为空,删除表
-
GO
-
CREATE
TABLE
TEST
--> 创建表,字段及类型如下
-
(
-
CalID
varchar(
20),
--> 编号
-
CalDate datetime,
--> 日期字段
-
CalStime datetime,
--> 时间字段
-
CalEtime datetime,
--> 机器号
-
CalBZ
varchar(
10)
--> 这是机器要求的时间间隔字段,单位分钟
-
);
-
-
GO
-
-
INSERT
TEST
--> 向表中插入数据
-
select
'A01',
'2011-03-13 00:00:00.000',
'00:00:00.000',
'06:59:00.000',
'丙'
union all
-
select
'A01',
'2011-03-13 00:00:00.000',
'07:00:00.000',
'14:59:00.000',
'甲'
union all
-
select
'A01',
'2011-03-13 00:00:00.000',
'15:00:00.000',
'21:59:00.000',
'乙'
union all
-
select
'A01',
'2011-03-13 00:00:00.000',
'22:00:00.000',
'23:59:00.000',
'丁'
-
-
GO
-
SELECT *
FROM
TEST;
--> 表的结构如下
-
-
GO
-
-
-
/*
-
CalID CalDate CalStime CalEtime CalBZ
-
-------------------- ------------------------------------------------------ ------------------------------------------------------ ------------------------------------------------------ ----------
-
A01 2011-03-13 00:00:00.000 1900-01-01 00:00:00.000 1900-01-01 06:59:00.000 丙
-
A01 2011-03-13 00:00:00.000 1900-01-01 07:00:00.000 1900-01-01 14:59:00.000 甲
-
A01 2011-03-13 00:00:00.000 1900-01-01 15:00:00.000 1900-01-01 21:59:00.000 乙
-
A01 2011-03-13 00:00:00.000 1900-01-01 22:00:00.000 1900-01-01 23:59:00.000 丁
-
*/
-
-
--怎么得到以下结果?
-
/*
-
A01 2011-03-13 00:00 2011-03-13 00:29 丙
-
A01 2011-03-13 00:30 2011-03-13 00:59 丙
-
A01 2011-03-13 01:00 2011-03-13 01:29 丙
-
A01 2011-03-13 01:30 2011-03-13 01:59 丙
-
.....以此类推
-
A01 2011-03-13 23:00 2011-03-13 23:29 丁
-
A01 2011-03-13 23:30 2011-03-13 23:59 丁
-
-
*/
简单的说,就是如何把表中一个时间范围分段成若干个小时间段?在sql server 2000系统中。
我的方法:
-
select CalID,
-
-
DATEADD(
minute,
30*
number,cal_stime) calStime,
-
DATEADD(
minute,
30*(
number+
1)
-1,cal_stime) calEtime,
-
--Cal_Stime,
-
--Cal_Etime,
-
--number,
-
CalBZ
-
from
-
(
-
select *,
-
convert(
varchar(
11),CalDate,
120)+
CONVERT(
varchar(
5),CalStime,
108) Cal_Stime,
-
convert(
varchar(
11),CalDate,
120)+
CONVERT(
varchar(
5),CalEtime,
108) Cal_Etime
-
-
from
TEST
-
)t,master..spt_values s
-
where s.type =
'P'
-
and s.number >=
0
-
and
DATEADD(
MINUTE,
30*
number,Cal_Stime) <=Cal_Etime
-
/*
-
CalID calStime calEtime CalBZ
-
A01 2011-03-13 00:00:00.000 2011-03-13 00:29:00.000 丙
-
A01 2011-03-13 00:30:00.000 2011-03-13 00:59:00.000 丙
-
A01 2011-03-13 01:00:00.000 2011-03-13 01:29:00.000 丙
-
A01 2011-03-13 01:30:00.000 2011-03-13 01:59:00.000 丙
-
A01 2011-03-13 02:00:00.000 2011-03-13 02:29:00.000 丙
-
A01 2011-03-13 02:30:00.000 2011-03-13 02:59:00.000 丙
-
A01 2011-03-13 03:00:00.000 2011-03-13 03:29:00.000 丙
-
A01 2011-03-13 03:30:00.000 2011-03-13 03:59:00.000 丙
-
A01 2011-03-13 04:00:00.000 2011-03-13 04:29:00.000 丙
-
A01 2011-03-13 04:30:00.000 2011-03-13 04:59:00.000 丙
-
A01 2011-03-13 05:00:00.000 2011-03-13 05:29:00.000 丙
-
A01 2011-03-13 05:30:00.000 2011-03-13 05:59:00.000 丙
-
A01 2011-03-13 06:00:00.000 2011-03-13 06:29:00.000 丙
-
A01 2011-03-13 06:30:00.000 2011-03-13 06:59:00.000 丙
-
A01 2011-03-13 07:00:00.000 2011-03-13 07:29:00.000 甲
-
A01 2011-03-13 07:30:00.000 2011-03-13 07:59:00.000 甲
-
A01 2011-03-13 08:00:00.000 2011-03-13 08:29:00.000 甲
-
A01 2011-03-13 08:30:00.000 2011-03-13 08:59:00.000 甲
-
A01 2011-03-13 09:00:00.000 2011-03-13 09:29:00.000 甲
-
A01 2011-03-13 09:30:00.000 2011-03-13 09:59:00.000 甲
-
A01 2011-03-13 10:00:00.000 2011-03-13 10:29:00.000 甲
-
A01 2011-03-13 10:30:00.000 2011-03-13 10:59:00.000 甲
-
A01 2011-03-13 11:00:00.000 2011-03-13 11:29:00.000 甲
-
A01 2011-03-13 11:30:00.000 2011-03-13 11:59:00.000 甲
-
A01 2011-03-13 12:00:00.000 2011-03-13 12:29:00.000 甲
-
A01 2011-03-13 12:30:00.000 2011-03-13 12:59:00.000 甲
-
A01 2011-03-13 13:00:00.000 2011-03-13 13:29:00.000 甲
-
A01 2011-03-13 13:30:00.000 2011-03-13 13:59:00.000 甲
-
A01 2011-03-13 14:00:00.000 2011-03-13 14:29:00.000 甲
-
A01 2011-03-13 14:30:00.000 2011-03-13 14:59:00.000 甲
-
A01 2011-03-13 15:00:00.000 2011-03-13 15:29:00.000 乙
-
A01 2011-03-13 15:30:00.000 2011-03-13 15:59:00.000 乙
-
A01 2011-03-13 16:00:00.000 2011-03-13 16:29:00.000 乙
-
A01 2011-03-13 16:30:00.000 2011-03-13 16:59:00.000 乙
-
A01 2011-03-13 17:00:00.000 2011-03-13 17:29:00.000 乙
-
A01 2011-03-13 17:30:00.000 2011-03-13 17:59:00.000 乙
-
A01 2011-03-13 18:00:00.000 2011-03-13 18:29:00.000 乙
-
A01 2011-03-13 18:30:00.000 2011-03-13 18:59:00.000 乙
-
A01 2011-03-13 19:00:00.000 2011-03-13 19:29:00.000 乙
-
A01 2011-03-13 19:30:00.000 2011-03-13 19:59:00.000 乙
-
A01 2011-03-13 20:00:00.000 2011-03-13 20:29:00.000 乙
-
A01 2011-03-13 20:30:00.000 2011-03-13 20:59:00.000 乙
-
A01 2011-03-13 21:00:00.000 2011-03-13 21:29:00.000 乙
-
A01 2011-03-13 21:30:00.000 2011-03-13 21:59:00.000 乙
-
A01 2011-03-13 22:00:00.000 2011-03-13 22:29:00.000 丁
-
A01 2011-03-13 22:30:00.000 2011-03-13 22:59:00.000 丁
-
A01 2011-03-13 23:00:00.000 2011-03-13 23:29:00.000 丁
-
A01 2011-03-13 23:30:00.000 2011-03-13 23:59:00.000 丁
-
*/
2、如何取0点开始至今的时间段集合, 间隔1小时
http://bbs.csdn.net/topics/390706187
如题:如何取0点开始至今的时间段集合, 间隔1小时
0:00 - 1:00
1:00 - 2:00
...
23:00 - 0:00
下面的代码产生的是纯时间段,不过不好用:
-
select
convert(
varchar(
10),
getdate(),
120)
'当天日期',
-
convert(
varchar(
5),
dateadd(
hour,s.number,
convert(
varchar(
10),
getdate(),
120)),
108)+
'-'+
-
convert(
varchar(
5),
dateadd(
hour,s.number+
1,
convert(
varchar(
10),
getdate(),
120)),
108)
'时间段'
-
from master..spt_values s
-
where s.type =
'P'
and s.number <=
23
-
/*
-
当天日期 时间段
-
2014-02-11 00:00-01:00
-
2014-02-11 01:00-02:00
-
2014-02-11 02:00-03:00
-
2014-02-11 03:00-04:00
-
2014-02-11 04:00-05:00
-
2014-02-11 05:00-06:00
-
2014-02-11 06:00-07:00
-
2014-02-11 07:00-08:00
-
2014-02-11 08:00-09:00
-
2014-02-11 09:00-10:00
-
2014-02-11 10:00-11:00
-
2014-02-11 11:00-12:00
-
2014-02-11 12:00-13:00
-
2014-02-11 13:00-14:00
-
2014-02-11 14:00-15:00
-
2014-02-11 15:00-16:00
-
2014-02-11 16:00-17:00
-
2014-02-11 17:00-18:00
-
2014-02-11 18:00-19:00
-
2014-02-11 19:00-20:00
-
2014-02-11 20:00-21:00
-
2014-02-11 21:00-22:00
-
2014-02-11 22:00-23:00
-
2014-02-11 23:00-00:00
-
*/
这个是产生日期时间段,比较实用:
-
if OBJECT_ID('tempdb..#seTable') is not null
-
drop
table #seTable
-
-
create
table #seTable(starTime
nvarchar(
40),endTime
nvarchar(
40))
-
-
-
insert
into #seTable
-
select
--convert(varchar(10),getdate(),120) curr_date,
-
convert(
nvarchar(
19),
dateadd(
hour,s.number,
convert(
varchar(
10),
getdate(),
120)),
120) start_date,
-
convert(
nvarchar(
19),
dateadd(
hour,s.number+
1,
convert(
varchar(
10),
getdate(),
120)),
120) end_date
-
from master..spt_values s
-
where s.type =
'P'
and s.number <=
23
-
-
select *
-
from #seTable
-
/*
-
starTime endTime
-
2014-02-11 00:00:00 2014-02-11 01:00:00
-
2014-02-11 01:00:00 2014-02-11 02:00:00
-
2014-02-11 02:00:00 2014-02-11 03:00:00
-
2014-02-11 03:00:00 2014-02-11 04:00:00
-
2014-02-11 04:00:00 2014-02-11 05:00:00
-
2014-02-11 05:00:00 2014-02-11 06:00:00
-
2014-02-11 06:00:00 2014-02-11 07:00:00
-
2014-02-11 07:00:00 2014-02-11 08:00:00
-
2014-02-11 08:00:00 2014-02-11 09:00:00
-
2014-02-11 09:00:00 2014-02-11 10:00:00
-
2014-02-11 10:00:00 2014-02-11 11:00:00
-
2014-02-11 11:00:00 2014-02-11 12:00:00
-
2014-02-11 12:00:00 2014-02-11 13:00:00
-
2014-02-11 13:00:00 2014-02-11 14:00:00
-
2014-02-11 14:00:00 2014-02-11 15:00:00
-
2014-02-11 15:00:00 2014-02-11 16:00:00
-
2014-02-11 16:00:00 2014-02-11 17:00:00
-
2014-02-11 17:00:00 2014-02-11 18:00:00
-
2014-02-11 18:00:00 2014-02-11 19:00:00
-
2014-02-11 19:00:00 2014-02-11 20:00:00
-
2014-02-11 20:00:00 2014-02-11 21:00:00
-
2014-02-11 21:00:00 2014-02-11 22:00:00
-
2014-02-11 22:00:00 2014-02-11 23:00:00
-
2014-02-11 23:00:00 2014-02-12 00:00:00
-
*/