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Convert Bigint time to datetime


Convert Bigint time to datetime

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PSB
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Hi,

How to convert bigint time to datetime (CST)

Declare @MyBigIntTime BIGINT =1397750400000

Thanks,
PSB
gbritton1
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What units are your bigint in? Minutes, seconds, hours, years, microseconds, months ,picoseconds?
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Lynn Pettis
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Also, what date and time does the value provided equate?

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What is the base date? 1900-01-01, 1970-01-01. The basic idea is:

DATEADD(Minute, Integer, BaseDate)



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Unfortunately, you get an overflow error when trying to convert the BIGINT value provided to an INT value when using DATEADD.

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Well, OK. Just do it in a loop, adding portions of bigint that fit into an integer to an accumulating date field.
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gbritton1 (4/17/2014)
Well, OK. Just do it in a loop, adding portions of bigint that fit into an integer to an accumulating date field.


Okay, using what for a base? The OP still hasn't told us what the value provided represents.

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Lynn Pettis

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select DATEADD(Minute, 1397750400000, '1970-00-01')
Getting an overflow error .


Arithmetic overflow error converting expression to data type int.
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PSB (4/17/2014)

select DATEADD(Minute, 1397750400000, '1970-00-01')
Getting an overflow error .


Arithmetic overflow error converting expression to data type int.


Yep, told you that would happen earlier.

Now, what date and time does 1397750400000 represent??

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Lynn Pettis

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