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 Transact-SQL (2012)
 Populating a Booking date usind dateadd
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wafw1971
Yak Posting Veteran

75 Posts

Posted - 02/20/2013 :  07:16:40  Show Profile  Reply with Quote
I have an arrival date already in the system and I need to populate the Booking date using a random function, the booking date can be any day on or before the arrival date up to a maximum 90 days previous but it must be random the booking date cannot all be the same date.

I thought I cracked it but was wrong. Can you help?

SELECT ArrivalDate, DATEADD(day, -1 + RAND(checksum(NEWID()))-90
, ArrivalDate) AS BookingDate
FROM Bookings
ORDER BY ArrivalDate

Thanks

Wayne

wafw1971
Yak Posting Veteran

75 Posts

Posted - 02/20/2013 :  07:31:23  Show Profile  Reply with Quote
Its alright I have figured it out:

SELECT ArrivalDate, DATEADD(day, -1 + RAND(checksum(NEWID()))*-90
, ArrivalDate) AS BookingDate
FROM Bookings
ORDER BY ArrivalDate
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