On Wed, Jul 29, 2009 at 8:50 AM, Rich Shepard<rshep...@appl-ecosys.com> wrote: > On Wed, 29 Jul 2009, Adler, Eliedaat wrote: > >> SQL/sqlite challenge for all: > > No challenge for anyone who knows SQL. > >> I need a running sum of size that works regardless of what order the objects >> are in. >> User Function/Aggregates welcome! > > _All_ implementations of SQL include a suite of aggregate functions, and > SUM() is among those. Take a look at the SQLite Web site, Mike Owens's book, > Rick van der Lans's book, or any introduction to SQL. > > You will write, "SELECT filename, date, owner, size, SUM(size) AS total > FROM mytable;" >
Well, not really. The above totals across the entire result set. The OP wants a running total, kinda like in a spreadsheet. Since the question is phrased as a "challenge," I wonder if the OP has the answer already, and merely wants to test the SQL sages on the list. Otherwise, a better spirit would be to simply ask the question as a question, and not as a challenge. For my part, I don't know how to do a running total in a result set unless I have some kind of a counter that keeps track of the "row before the current row" -- Puneet Kishor _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
