-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 15/03/13 05:25, Clemens Ladisch wrote: > If you had no xBestIndex implementation, SQLite would crash.
He is using APSW (a Python wrapper). It provides a default implementation if the developer does not. Here is the documentation: http://apidoc.apsw.googlecode.com/hg/vtable.html#apsw.VTTable.BestIndex There was some confusion over estimated cost. APSW leaves it at the SQLite supplied default which is 1e99 divided by 2. This generally encourages to SQLite to use anything else (eg real indices) unless the developer using APSW knows better. Roger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAlFGzgAACgkQmOOfHg372QSzoQCfWxH+ACpo3FbeYFli7DEZVGpO G+IAn2twe1Lva3sVE05jedQi/7VL3lpk =CFQH -----END PGP SIGNATURE----- _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
