Month start in SQL Server 2005

How to find the s开发者_StackOverflow中文版tarting date of current month in SQL Server 2005 ?

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one way

SELECT DATEADD(mm, DATEDIFF(mm, 0, getdate()), 0) AS FirstDayOfMonth

for last day and other time periods, see here: http://wiki.lessthandot.com/index.php/How_to_find_the_first_and_last_days_in_years%2C_months_etc

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DECLARE @mydate DATETIME
SELECT @mydate = GETDATE()
SELECT CONVERT(VARCHAR(25),DATEADD(dd,-(DAY(@mydate)-1),@mydate),101) AS Date_Value

Get First Day of the Month Function

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 DECLARE @currentmonthstart datetime

 SET @currentmonthstart = DATEADD(DD, -DATEPART(DD, GETDATE())+1, getdate())

 PRINT @currentmonthstart

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There will be loads of ways to do this, and this is one of them:

select convert(datetime,convert(varchar(10),getdate() - day(getdate()) + 1,120))