在论坛中出现的比较难的sql问题：24(生成时间段)

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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 allselect 'A01','2011-03-13 00:00:00.000','07:00:00.000','14:59:00.000','甲' union allselect 'A01','2011-03-13 00:00:00.000','15:00:00.000','21:59:00.000','乙' union allselect '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,       CalBZfrom(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 swhere s.type = 'P'and s.number >=0and DATEADD(MINUTE,30*number,Cal_Stime) <=Cal_Etime/*CalID    calStime    calEtime    CalBZA01    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 swhere s.type = 'P' and s.number <= 23/*当天日期时间段2014-02-1100:00-01:002014-02-1101:00-02:002014-02-1102:00-03:002014-02-1103:00-04:002014-02-1104:00-05:002014-02-1105:00-06:002014-02-1106:00-07:002014-02-1107:00-08:002014-02-1108:00-09:002014-02-1109:00-10:002014-02-1110:00-11:002014-02-1111:00-12:002014-02-1112:00-13:002014-02-1113:00-14:002014-02-1114:00-15:002014-02-1115:00-16:002014-02-1116:00-17:002014-02-1117:00-18:002014-02-1118:00-19:002014-02-1119:00-20:002014-02-1120:00-21:002014-02-1121:00-22:002014-02-1122:00-23:002014-02-1123:00-00:00*/

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 #seTableselect --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_datefrom master..spt_values swhere s.type = 'P' and s.number <= 23select *from #seTable/*starTimeendTime2014-02-11 00:00:002014-02-11 01:00:002014-02-11 01:00:002014-02-11 02:00:002014-02-11 02:00:002014-02-11 03:00:002014-02-11 03:00:002014-02-11 04:00:002014-02-11 04:00:002014-02-11 05:00:002014-02-11 05:00:002014-02-11 06:00:002014-02-11 06:00:002014-02-11 07:00:002014-02-11 07:00:002014-02-11 08:00:002014-02-11 08:00:002014-02-11 09:00:002014-02-11 09:00:002014-02-11 10:00:002014-02-11 10:00:002014-02-11 11:00:002014-02-11 11:00:002014-02-11 12:00:002014-02-11 12:00:002014-02-11 13:00:002014-02-11 13:00:002014-02-11 14:00:002014-02-11 14:00:002014-02-11 15:00:002014-02-11 15:00:002014-02-11 16:00:002014-02-11 16:00:002014-02-11 17:00:002014-02-11 17:00:002014-02-11 18:00:002014-02-11 18:00:002014-02-11 19:00:002014-02-11 19:00:002014-02-11 20:00:002014-02-11 20:00:002014-02-11 21:00:002014-02-11 21:00:002014-02-11 22:00:002014-02-11 22:00:002014-02-11 23:00:002014-02-11 23:00:002014-02-12 00:00:00*/

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