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PSPP-BUG: [bug #11975] AGGREGATE should support MEDIAN function

From: John Darrington
Subject: PSPP-BUG: [bug #11975] AGGREGATE should support MEDIAN function
Date: Tue, 02 Sep 2008 01:58:58 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20080612 Iceweasel/ (Debian-

Follow-up Comment #3, bug #11975 (project pspp):

Although there is opportunity to reduce the total number of passes, we can't
get around the need to sort and iterate for each median being calculated.

With this patch, the total number of sorts is N and the total number of
passes is (N+1), where N is the number of medians to be calculated.  With some
rework, it could be got down to N sorts and N passes, but I'm not sure if it's
worth the effort.


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