从csv文件到SQL Server日期时间的SSIS Unix时间戳

Question

I have tried several options to get this to work but have so far been unsuccessful using the derived column to transform Unix to datetime.

The column in question is loaded in as a DT_WSTR (I have also tried DT_I4 and DT_I8) and the derived column is then supposed to create the new column with the datetime.

This is what i currently have:

DATEADD("ss", (dt_i4)[logged_date], (dt_date)("1970-01-01"))

When I try to execute i get an error at the derived column which just states

"An error has occurred while evaluating the function"

Any help would be appreciated.

Answer 1

If your Timestamp is in seconds

Select dateadd(SS,1476444566,'1970-01-01') Returns 2016-10-14 11:29:26.000

If micro-seconds (requires a little more workd(

Declare @UnixTime bigint = 1470562081943371
Select DateAdd(MS,round(((@UnixTime/1000000.)-(@UnixTime/1000000))*1000,0),DateAdd(SECOND,(@UnixTime/1000000),'1970-01-01 00:00:00'))

Answer 2

Found my problem.

Turns out there was a row with a null valued unix date which is why SSIS was having a problem with the conversion.

I have set up an error output to place into an excel file should it happen again.

Code is now working as expected.

Appreciate the help that was offered.