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1st day of the current month and first day of next month

Posted on 2009-06-30
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Last Modified: 2012-05-07
Is there a way of building a string to my query can automatically calculate the first day of the current month and the fisrt day of next month?? something like the below would be great.

select CAST('01/01/' + STR(year(getdate())) AS datetime)
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Question by:leap29
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LVL 59

Expert Comment

by:Kevin Cross
ID: 24744339
Use date functions:
SELECT DATEADD(mm, 0, DATEDIFF(mm, 0, GETDATE()))

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LVL 59

Expert Comment

by:Kevin Cross
ID: 24744349
There are other constructs, but I usually go with above as I can then adjust to previous or next months by simply changing the amount of months to add in the outer DATEADD.
-- next month on the 1st
SELECT DATEADD(mm, 1, DATEDIFF(mm, 0, GETDATE()))

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LVL 59

Accepted Solution

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Kevin Cross earned 250 total points
ID: 24744383
Sorry, I gave you the wrong one.  That is the one I use when dealing with days.  This is for month.
-- this month on the 1st
SELECT DATEADD(mm, DATEDIFF(mm, 0, GETDATE()), 0)
 
-- next month on the 1st
SELECT DATEADD(mm, DATEDIFF(mm, 0, GETDATE())+1, 0)

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LVL 31

Expert Comment

by:RiteshShah
ID: 24744631
you can get date as well as day name also.




SELECT DATEADD(mm, DATEDIFF(mm, 0, GETDATE()), 0) as dt,DATENAME(Dw,DATEADD(mm, DATEDIFF(mm, 0, GETDATE()), 0)) as DayName
 
 
SELECT DATEADD(mm, DATEDIFF(mm, 0, GETDATE())+1, 0),DATENAME(dw,DATEADD(mm, DATEDIFF(mm, 0, GETDATE())+1, 0)) as dayname

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