Thanks for running these tests. Clearly I should have made this change a long time ago....
On Tue, Oct 30, 2012 at 9:31 AM, Eleytherios Stamatogiannakis < est...@gmail.com> wrote: > In my preliminary tests, the patch has worked wonderfully. In these first > tests i have only tested plain SQLite functionality (without virtual table > or additional functions) on a 1.5GB DB. Some remarks: > > - It is lightning fast. For queries that fit to the free space (some of > them could not finish before due to space constraints) and previously took > minutes to finish, with the patch they are instantaneous and they do not > touch the drive. The results are the same. > > - I was expecting that only simple scans over unioned queries would be > affected by the patch. When i tried to do a filter on a unioned table > composition, and the query was again instantaneous, i was flabbergasted. > The patch really pushes index accesses downwards into the unioned tables. I > didn't expect the patch to go that far. I'm amazed, > > - Group by on unioned all tables was also instantaneous without filling > the hard disk. > > - Oddly, order by works the same both with the patch and without the patch > (SQLite 3.7.14.1). I assume that order by had a similar optimization in > previous versions of SQLite too? > > - On all of the above tests, the free space on the hard disk wasn't > affected by the running query. > > More tests will be done in the context of madIS, but they will take more > time. I want to test plain SQLite first, because this is what most people > will use in practise. > > Best regards, > > lefteris. > > > ______________________________**_________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-**bin/mailman/listinfo/sqlite-**users<http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users> > -- D. Richard Hipp d...@sqlite.org _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
