Sql根据起止日期生成时间列表

--monList  monList  monList
--根据起止时间生成月份列表
DECLARE  
@BeginMonth varchar(6),  
@EndMonth varchar(6) 
SELECT
@BeginMonth='201409',  
@EndMonth='201506'SELECT  
CONVERT(VARCHAR(6),DATEADD(month,number,@BeginMonth+'01'),112) as monList
FROM  
master..spt_values  
WHERE  
type='P'  
and  
DATEADD(month,number,@BeginMonth+'01')<=@EndMonth+'01'

--dayList  dayList  dayList
--根据起止时间生成天列表
DECLARE @BeginDay DATE,@EndDay DATE
SELECT @BeginDay='2016-12-31',@EndDay='2017-10-31'--GetDate()
SELECT DateAdd(day,number,@BeginDay) as dayList 
  FROM master..spt_values  
 WHERE type = 'p'  
   AND number <= DateDiff(day,@BeginDay,@EndDay) 
   


declare @sql varchar(8000)
set @sql = 'select Date'
select @sql = @sql + ',isnull (sum(case item when '''+item+''' then saleqty end),0) as ['+item+']' from (select distinct item from test where item is not null) as a
select @sql = @sql+' from test group by date'
exec(@sql)