??? <2004wqg2008 at 163.com> wrote: > > After testing the Sqlite3_open and ATTACH DATABASE, > I found that the attach database is slower than sqlite3_open. > there is attachment after the mail which includ the speed > information ( millisecond ).
Your attachment was discarded (attachment not allowed in this mailing list). Anyway, I remember observing that: - sqlite3_open_v2(...) is lazy. In other words, it does not parse the schema of the DB until the first query is performed after opening the database. - ATTACH is not lazy. The schema is parsed as soon as you attach a database. That could explain the difference in speed. Would there be a way to make ATTACH lazy by the way? Regards Dominique
