Thank you for the fast fix! Best, Lalit
On Wed, 29 Jan 2020 at 15:07, Dan Kennedy <danielk1...@gmail.com> wrote: > > On 29/1/63 20:09, Lalit Maganti wrote: > > Hi folks, > > > > Just wanted to check up on this to see if this issue is something which > is > > being tracked and if there was a potential fix in the works? > > Thanks for the excellent bug report and minimal reproduction case. Now > fixed here: > > https://www.sqlite.org/src/info/dcb4838757ca49cf > > None of us saw your post last month. We think it must have been filtered > as spam by gmail. Sorry about that. > > Dan. > > > > > > > > > Thanks, > > Lalit > > > > On Thu, 2 Jan 2020 at 15:13, Lalit Maganti <lal...@google.com> wrote: > > > >> Hi all, > >> > >> I believe that I have found a bug in the virtual table bytecode > generation > >> when OR constraints are present and argvIndex is set in xBestIndex but > the > >> application does not actually filter fully. > >> > >> The problem seems to be in not setting/unsetting the non-null flag > >> correctly (SQLITE_JUMPIFNULL) on the instruction which does the > comparison; > >> this leads to NULLs slipping through the filter. > >> > >> To fully repro the problem, please find attached a small C file which > >> shows the unexpected behaviour. By adding an EXPLAIN in-front of the > SELECT > >> query, you should be able to see the incorrect bytecode on the NE > opcode. > >> > >> If the attachment doesn't come through for some reason, I've also put > the > >> same file as a GitHub gist > >> <https://gist.github.com/tilal6991/57f8c51934379270abe58201c7b1dab1/>. > >> > >> Thank you! > >> > >> Regards, > >> Lalit > >> > > _______________________________________________ > > sqlite-users mailing list > > sqlite-users@mailinglists.sqlite.org > > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ > sqlite-users mailing list > sqlite-users@mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
