Neil Shephard <[email protected]>:
Sounds like the kind of thing you get sometimes when there are zero
obs--does the same thing happen when you specify the option
unm(both)
and then
tab _merge
?
On Fri, Feb 6, 2009 at 10:40 AM, Neil Shephard <[email protected]> wrote:
> I'm trying to -joinby- two datasets and am experiencing some
> strange/unexpected behaviour.
>
> After -set trace on- I find the error occurs after loading the -using-
> data set. The strange thing is that a new variable is (purportedly)
> being created and then an attempt to sort on that variable is being
> made and it no longer exists...
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