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Re: st: Appending multiple large datasets


From   Ryan Stevens <stevrl7@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Appending multiple large datasets
Date   Fri, 7 Jun 2013 15:52:26 -0400

No error messages, Windows informs me Stata has stopped working, so it
could be a problem with Windows. The insheet commands individually
work, I have checked this. I'll not set the memory myself. And yes,
Excel reads them fine. I can try importing as XLS to see if that might
change something. As a side note, I've been able to workaround this by
merging the files since none of the data is duplicated between my
files. This does work, but I'm still wanting to figure out what
exactly is wrong.

Ryan

On Fri, Jun 7, 2013 at 3:44 PM, Sergiy Radyakin <serjradyakin@gmail.com> wrote:
> So what exactly did not work?
> Which error message are you getting?And after which line?
> Insert command count after each insheet. Check how many observations
> got imported.
> Do not set memory in Stata 12. It can do it better then the user.
> Are your CSV files really "comma separated values"? Does Excel read
> them OK? Try saving from Excel and then importing XLS file into Stata
> 12.0.
> Sergiy.
>
> On Fri, Jun 7, 2013 at 1:57 PM, Ryan Stevens <stevrl7@gmail.com> wrote:
>> Hi all,
>>
>> I'm experiencing a problem appending 2 datasets containing roughly 1
>> million observations each. I'm currently running Stata 12.0. My code
>> can import each dataset fine, but it always gets hung up when I try to
>> append the two datasets. My code using temporary files is below and is
>> very simple. I've tried creating physical .dta files and saving them
>> and that did not work. I can assure you my directories work fine, so
>> it's no issues with names of my files. I'm wondering if there are any
>> thoughts on where this problem could lie.
>>
>> clear
>> capture log close
>> set memory 100m
>> set more off
>> macro drop _all
>>
>> *Import data
>> insheet using "consump1.csv"
>> tempfile master_file
>> save "`master_file'"
>>
>> clear
>> insheet using "consump2.csv"
>> append using "`master_file'"
>>
>>
>>
>> Thanks for any assistance,
>> Ryan
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