On Mon, Nov 2, 2009 at 9:51 AM, Sam Mason <sam@xxxxxxxxxxxxx> wrote: > On Mon, Nov 02, 2009 at 09:20:38AM -0500, Tom Lane wrote: >> Craig Ringer <craig@xxxxxxxxxxxxxxxxxxxxx> writes: >> > Before I go ahead and try to write a decent quality version: is there >> > any chance an array_reverse() function (in C) would be accepted into Pg >> > mainline? >> >> What would it mean for a multi-dimensional array? > > Rotating the array by 180 degrees in every dimension would give the same > answer for 1-dimensional arrays and give sensible answers for higher > dimensional arrays. For example: > > 1,2,3 == 3,2,1 > > [1 2 3 [9 8 7 > 4 5 6 == 6 5 4 > 7 8 9] 3 2 1] > > I think higher dimensionality would work, it's just a bit fiddly to > draw. do you think that's the typical case, or is it more common to want to reverse a particular slice? (I like your idea actually, because if you need a slice you can slice notation one out...better than what I posted above). merlin -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
