[EpiData-list] Problems appending files

EpiData development and support epidata-list at lists.umanitoba.ca
Wed Apr 10 10:48:03 CDT 2019

Dear Omar Bautista:

You must have defined an identifier to be unique in File A, and the same 
variable as unique in File B.  Let's say in file A, these are the records

id  age
A    34
B    40
C    21

In File B you have these:

id  age
B   45
D   56
E   18

In each of the files, "id" is unique, so no error message, but if you 
append the two you have a duplicate "id" (B), thus non-unique and 
resulting in an error message.



On 10-Apr-19 01:08, EpiData development and support wrote:
> Hello Jens and EpiData users!
> I trying to append some EpiData files. But I'm having a problem... I 
> tried the same steps that are illustrated in this video:
> https://www.youtube.com/watch?v=BY6nZ0-k2Bs
> But I'm having an error that is shown in the attached file.
> Please, help me!

Hans L Rieder, MD, MPH
Jetzikofenstr 12
3038 Kirchlindach

Tel: +41 31 829 4577
Mob: +41 79 321 9122
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Web: http://www.tbrieder.org

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