Re: st: Retrieving a master dataset after merging

["louis boakye-yiadom" <louisby@hotmail.com>]

Thanks, Ted. I suppose I need to clarify the question. I'm referring to a 
situation where the master file is no longer on disk. I dropped some 
observations from a dataset (let's call it A), and named the modfied set 
(let's call it B). I then merged B with another dataset (let's call it C), 
but errorneously named the new set (containiing B and C) B, thus replacing 
the oringinal B with the new set. Now I would like to have the oringinal B 
on disk. I can go back and repeat the changes I made to A to obtain the 
oringinal B, but I was wondering whether that's the only option. Thank you.

Louis



> From: Ted Anagnoson <anag999@silcom.com>
>
> If A is the master dataset and B is the data set to merge into it
>
> A is on disk and B is on disk
>
> You load A into memory
> Give merge command
> Save as NEW data set name, "C"
>
> Then A is still on disk in its original form, B is still on disk in its 
> original form, and C is now on disk as the merger of the two.  C is also 
> the data set in memory.
>
> Ted Anagnoson
>
>
> At 04:24 PM 4/9/2005 +0000, you wrote:
>
> > Dear All,
> > After doing a -merge-, can one retrieve the master dataset? If yes, how 
> > can it be done? Thank you.
> >
> > Louis
> >
> >
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