master.dbo.spt_values

-- 统计某月份周情况 没有的补0
if   object_id ( ' temp_tb ' )  is   not   null  
drop   table  temp_tb

create   table  temp_tb
( [ ID ]   [ numeric ] ( 18 ,  0 )  IDENTITY ( 1 , 1 )  NOT   NULL ,
[ test_values ]   int   NULL ,
[ time ]   datetime   null ,
);
go

insert   into  temp_tb( [ test_values ] , [ time ] ) 
select   3 , ' 2009-2-1 10:12:30 '   union   all
select   5 , ' 2009-2-5 09:20:23 '   union   all
select   6 , ' 2009-2-6 11:21:34 '   union   all
select   7 , ' 2009-2-8 12:22:12 '   union   all
select   2 , ' 2009-2-10 16:45:25 '   union   all
select   3 , ' 2009-2-13 13:21:14 '   union   all
select   5 , ' 2009-2-15 15:58:09 '   union   all
select   1 , ' 2009-2-15 08:35:47 '   union   all
select   1 , ' 2009-2-15 09:13:07 '   union   all
select   9 , ' 2009-2-15 09:15:04 '

select   *   from  temp_tb

SELECT
    A. [ Week ] ,
     ISNULL ( COUNT (B.test_values), 0 )  AS  num
FROM  (
     SELECT
         datepart (week, dateadd (week, 0 , dateadd ( day , number , ' 2009-02-01 ' )))  AS   [ Week ]
     FROM  master.dbo.spt_values 
     WHERE  type = ' p '   AND   number   BETWEEN   0   AND   27
     GROUP   BY   datepart (week, dateadd (week, 0 , dateadd ( day , number , ' 2009-02-01 ' )))
)  AS  A
LEFT   JOIN  temp_tb  AS  B
     ON  A. [ Week ] = DATEPART (week,time)
GROUP   BY  A. [ Week ]



SELECT   DATEPART (WEEK, ' 2009-10-30 12:15:32.1234567 +05:10 ' )   -- 44周

/*
ID                                      test_values time
--------------------------------------- ----------- -----------------------
1                                       3           2009-02-01 10:12:30.000
2                                       5           2009-02-05 09:20:23.000
3                                       6           2009-02-06 11:21:34.000
4                                       7           2009-02-08 12:22:12.000
5                                       2           2009-02-10 16:45:25.000
6                                       3           2009-02-13 13:21:14.000
7                                       5           2009-02-15 15:58:09.000
8                                       1           2009-02-15 08:35:47.000
9                                       1           2009-02-15 09:13:07.000
10                                      9           2009-02-15 09:15:04.000

(10 行受影响)

Week        num
----------- -----------
6           3
7           3
8           4
9           0

*/



-- 1、得出一天的时间段记录。
select  时间段 = ltrim (a. number ) + ' :00- ' + ltrim (b. number ) + ' :00 '
from  master..spt_values a,master..spt_values b
where  a.type = ' p ' and  b.type = ' p '
  and  a. number   between   1   and   24  
  and  b. number   between   1   and   24  
  and  a. number = b. number - 1

/*
时间段
-------------------------------
1:00-2:00
2:00-3:00
3:00-4:00
4:00-5:00
5:00-6:00
6:00-7:00
7:00-8:00
8:00-9:00
9:00-10:00
10:00-11:00
11:00-12:00
12:00-13:00
13:00-14:00
14:00-15:00
15:00-16:00
16:00-17:00
17:00-18:00
18:00-19:00
19:00-20:00
20:00-21:00
21:00-22:00
22:00-23:00
23:00-24:00

(23 行受影响)
*/




-- 2、通过1个select语句某个月的所有日期记录
declare   @date   datetime
set   @date = ' 2009-11-23 '

select   [ day ] = ltrim ( year ( @date )) +right ( 100 + month ( @date ), 2 ) +right ( ' 0 ' + ltrim ( number ), 2 )
from  master..spt_values
where  type = ' p '
   and   number   >= 1  
   and   number   <=   datediff (dd, @date , dateadd ( month , 1 , @date ))

/*
day
--------------------
20091101
20091102
20091103
20091104
20091105
20091106
20091107
20091108
20091109
20091110
20091111
20091112
20091113
20091114
20091115
20091116
20091117
20091118
20091119
20091120
20091121
20091122
20091123
20091124
20091125
20091126
20091127
20091128
20091129
20091130

(30 行受影响)
*/