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From   "Nick Cox" <>
To   <>
Subject   st: RE: COMPDTA
Date   Thu, 27 Feb 2003 12:27:34 -0000

Monica Polo
> I am trying to compare two large dataset with COMPDTA and 
> the message
> "invalid syntax" comes up (r(110);).
> After setting the trace on, it was found that it is related 
> to  _rc and
> seems to have a problem with  the sollowing syntax: "  
> capture rename ``i''
> `xname'  ".
> Does anybody have any experience with this command or has  
> any suggestions
> or hints?

This is a program from 1995. The author is no longer 
active in the Stata community. 

There is a problem here with whatever is within the macros. 

My guess is what you are seeing is a side-effect of 
-compdta-'s assumption that variable names have no 
more than 8 characters, which was true of Stata when 
the program was written. Perhaps you have variables 
with names identical in the first 8 characters and 
-compdta- can't cope with this. 

Copy the program to another file with a slightly 
different name. 

Tweak the 8 to 32 a few lines ahead of the statement 
in question and see if the problem goes away. 

Others may have a comment on whether there are better
ways to do what you want to do given more precise 
information on that. 

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