Date:         Thu, 26 Dec 1996 10:30:29 PST
Reply-To:     TWB2%Rates%FAR@GO50.COMP.PGE.COM
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         TWB2%Rates%FAR@GO50.COMP.PGE.COM
Subject:      Re: Sorting large files
Comments: To: c.m.timmers@PI.NET

If CPU time does not matter (you are limited for space but not time), you could
index the dataset rather than sort it.  This will allow you to use the index for
BY processing, but it will cost in I/O (you may read each block once for each
observation in it--thousands of times for small obs in large blocks).
 
Tim Berryhill - Contract Programmer and General Wizard
TWB2@PGE.COM or http://www.aartwolf.com/twb.html
Frequently at Pacific Gas & Electric Co., San Francisco
The correlation coefficient between their views and
my postings is slightly less than 0
----------------------[Reply - Original Message]----------------------
 
Sent by:Kees Timmers <c.m.timmers@PI.NET>
 What is the best way to sort a large file under UNIX? I have troubles with
the proc sort of SAS, because it is using a lot off swap and memory. Any
suggestions? I have to sort a dataset off at least 200 MB with 12
class-variabeles.
 
Kees Timmers
 
=====================================================================