1.一個(gè)月第一天的
Select DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
2.本周的星期一
Select DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
3.一年的第一天
Select DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
4.季度的第一天
Select DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
5.當(dāng)天的半夜
Select DATEADD(dd, DATEDIFF(dd,0,getdate()), 0)
6.上個(gè)月的最后一天
Select dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0))
7.去年的最后一天
Select dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()), 0))
8.本月的最后一天
Select dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0))
9.本年的最后一天
Select dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0))
10.本月的第一個(gè)星期一
select DATEADD(wk, DATEDIFF(wk,0,dateadd(dd,6-datepart(day,getdate()),getdate())), 0)

--日期格式化：
SELECT CONVERT(varchar(100), GETDATE(), 0): 05 16 2006 10:57AM
SELECT CONVERT(varchar(100), GETDATE(), 1): 05/16/06
SELECT CONVERT(varchar(100), GETDATE(), 2): 06.05.16
SELECT CONVERT(varchar(100), GETDATE(), 3): 16/05/06
SELECT CONVERT(varchar(100), GETDATE(), 4): 16.05.06
SELECT CONVERT(varchar(100), GETDATE(), 5): 16-05-06
SELECT CONVERT(varchar(100), GETDATE(), 6): 16 05 06
SELECT CONVERT(varchar(100), GETDATE(), 7): 05 16, 06
SELECT CONVERT(varchar(100), GETDATE(), 8): 10:57:46
SELECT CONVERT(varchar(100), GETDATE(), 9): 05 16 2006 10:57:46:827AM
SELECT CONVERT(varchar(100), GETDATE(), 10): 05-16-06
SELECT CONVERT(varchar(100), GETDATE(), 11): 06/05/16
SELECT CONVERT(varchar(100), GETDATE(), 12): 060516
SELECT CONVERT(varchar(100), GETDATE(), 13): 16 05 2006 10:57:46:937
SELECT CONVERT(varchar(100), GETDATE(), 14): 10:57:46:967
SELECT CONVERT(varchar(100), GETDATE(), 20): 2006-05-16 10:57:47
SELECT CONVERT(varchar(100), GETDATE(), 21): 2006-05-16 10:57:47.157
SELECT CONVERT(varchar(100), GETDATE(), 22): 05/16/06 10:57:47 AM
SELECT CONVERT(varchar(100), GETDATE(), 23): 2006-05-16
SELECT CONVERT(varchar(100), GETDATE(), 24): 10:57:47
SELECT CONVERT(varchar(100), GETDATE(), 25): 2006-05-16 10:57:47.250
SELECT CONVERT(varchar(100), GETDATE(), 100): 05 16 2006 10:57AM
SELECT CONVERT(varchar(100), GETDATE(), 101): 05/16/2006
SELECT CONVERT(varchar(100), GETDATE(), 102): 2006.05.16
SELECT CONVERT(varchar(100), GETDATE(), 103): 16/05/2006
SELECT CONVERT(varchar(100), GETDATE(), 104): 16.05.2006
SELECT CONVERT(varchar(100), GETDATE(), 105): 16-05-2006
SELECT CONVERT(varchar(100), GETDATE(), 106): 16 05 2006
SELECT CONVERT(varchar(100), GETDATE(), 107): 05 16, 2006
SELECT CONVERT(varchar(100), GETDATE(), 108): 10:57:49
SELECT CONVERT(varchar(100), GETDATE(), 109): 05 16 2006 10:57:49:437AM
SELECT CONVERT(varchar(100), GETDATE(), 110): 05-16-2006
SELECT CONVERT(varchar(100), GETDATE(), 111): 2006/05/16
SELECT CONVERT(varchar(100), GETDATE(), 112): 20060516
SELECT CONVERT(varchar(100), GETDATE(), 113): 16 05 2006 10:57:49:513
SELECT CONVERT(varchar(100), GETDATE(), 114): 10:57:49:547
SELECT CONVERT(varchar(100), GETDATE(), 120): 2006-05-16 10:57:49
SELECT CONVERT(varchar(100), GETDATE(), 121): 2006

按一個(gè)月的天數(shù)查詢
select * from (select row_number() over(order by getdate()) id from 表名) a
where a.id <= DatePart(day,DateAdd(day, -1,'2010-11-1'))
//按年查詢
select * from (select dateadd(day,id,dateadd(month,-12,dateadd(day,-1,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0) ) )) pdate
from (select row_number() over(order by getdate()) id from 表名) a
where a.id <= datediff(day,dateadd(month,-12,getdate()),GETDATE()))c

//sql用where ...in or not in的情況不允許有NULL的值出現(xiàn)條件當(dāng)中.

SQL Server 2005 引入幾個(gè)新的排序(排名)函數(shù),如ROW_NUMBER、RANK、DENSE_RANK等。
SQL Server 2008之行值構(gòu)造器
insert into MyTest4 (id ,fname ,lname , salary) values
(1 , 'John' , 'Smith' , 150000.00),
(2 , 'Hillary' , 'Swank' , 250000.00),
(3 , 'Elisa' , 'Smith' , 120000.00),
(4 , 'Liz' , 'Carleno' , 151000.00),
(5 , 'Tony' , 'Mcnamara' , 150300.00)