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The following question reproduces the content:
The first:
-- Get the week of the month that the current date is
--Test: select dbo.getMonthWeek(getdate()) Result: 2nd week of October
CREATE function [dbo].[getMonthWeek](@d datetime)
returns varchar(20)
as
begin
declare @returns varchar(20),
@monthfirstDay datetime,
@firstMondy datetime
select @monthfirstDay=left(convert(varchar,@d,23),7)+'-01'
if not exists(select 1
from master.dbo.spt_values
where type=N'P' and number between 0 and datediff(d,@monthfirstDay,@d)
and datepart(dw,dateadd(d,number,@monthfirstDay))=2)
begin
select @monthfirstDay=dateadd(mm,-1,@monthfirstDay)
end
;with t as(select 'days'=dateadd(d,number,@monthfirstDay)
from master.dbo.spt_values
where type=N'P' and number<=7)
select @firstMondy=min([days])
from t
where datepart(dw,[days])=2
select @returns=rtrim(datepart(mm,@monthfirstDay))+'月的第'+rtrim(datediff(d,@firstMondy,@d)/7+1)+'周'
return @returns
end
The second:
-- Get the week of the month that the current date is
--Test: select dbo.WeekOfMonth(getDate()); result: 2
CREATE FUNCTION [dbo].[WeekOfMonth](@day datetime)
RETURNS int
AS
begin
----declare @day datetime
declare @num int
declare @Start datetime
declare @dd int
declare @dayofweek char(8)
declare @dayofweek_num char(8)
declare @startWeekDays int
---set @day='2009-07-05'
if datepart(dd,@day)=1
return 1
else
set @Start= (SELECT DATEADD(mm, DATEDIFF(mm,0,@day), 0)) -- the first day of a month
set @dayofweek= (datename(weekday, @Start)) --- get the day of the week on the first day of the month
set @dayofweek_num=(select (case @dayofweek when 'Monday' then 2
when 'Tuesday' then 3
when 'Wednesday' then 4
when 'Thursday' then 5
when 'Friday' then 6
when 'Saturday' then 7
when 'Sunday' then 1
end))
set @dayofweek_num= 7-@dayofweek_num+1 --- get the number of days on the first Monday of the month
---print @dayofweek_num
set @dd=datepart(dd,@day) ---- get today is the day of the month
--print @dd
if @dd<=@dayofweek_num -- less than the number of days in the previous week
return 1
else
set @dd=@dd-@dayofweek_num
if @dd % 7=0
begin
set @num=@dd / 7
return @num+1
end
else --if @dd % 7<>0
set @num=@dd / 7
set @num=@num+1+1
return @num
end