Thank you for the fix! Kenichi Ishigaki
2013/8/30 Marc L. Allen <mlal...@outsitenetworks.com>: > Thanks... that certainly clarifies it. Also, thanks to Dan who responded > similarly. > > -----Original Message----- > From: sqlite-users-boun...@sqlite.org > [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Richard Hipp > Sent: Thursday, August 29, 2013 11:58 AM > To: General Discussion of SQLite Database > Subject: Re: [sqlite] segmentation fault with 3.8.0 > > On Thu, Aug 29, 2013 at 11:47 AM, Marc L. Allen <mlal...@outsitenetworks.com >> wrote: > >> Silly question.. I looked at the fix. Why ignore indexes with greater >> than 4 fields? Isn't that a bit risky? Wouldn't it be better to >> ignore the fields after the 4th one for planning? >> > > The whereShortCut() routine is merely an optimization. It provides a quick > plan for the common case of a single-table query using an equality constraint > on a PRIMARY KEY or UNIQUE index. Anything that falls through > whereShortCut() goes into the regular query planner and will get analyzed > thoroughly there. > > You could omit the whereShortCut() routine entirely and SQLite would still > give the correct answer. The only downside is that sqlite3_prepare_v2() > would run slightly slower in the common case. > -- > D. Richard Hipp > d...@sqlite.org > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > > This email and any attachments are only for use by the intended recipient(s) > and may contain legally privileged, confidential, proprietary or otherwise > private information. Any unauthorized use, reproduction, dissemination, > distribution or other disclosure of the contents of this e-mail or its > attachments is strictly prohibited. If you have received this email in error, > please notify the sender immediately and delete the original. > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
