SQL Server datetime to int

birds

declare @currentDateTime datetime 
declare @timeStampValue int 

set @currentDateTime = SYSDATETIME(); 
print @currentDateTime 
set @timeStampValue = DATEDIFF(second, '1970-01-01', @currentDateTime) 
print @timeStampValue

 
To check the result:

https://www.epochconverter.com/

 

UTC milleseconds example:

 
declare @timeStampValue Bigint  
declare @utcDateTime datetime 

set @utcDateTime = GETUTCDATE(); 
set @timeStampValue = DATEDIFF(SECOND, '1970-01-01', @utcDateTime) 
set @timeStampValue = @timeStampValue * 1000

 

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