> Marcus Grimm <mgr...@medcom-online.de> wrote: >> what is possible I guess would be to start a transaction >> inside the loop, do something, and commit and procced >> with stepping > > No, this is not possible either. By starting the select, you also start > an implicit transaction. SQLite doesn't support nested transactions, so > you can't start another one in the middle of the loop.
hm... just read again some docs... you are right I guess, as usual... but reading the docs (http://www.sqlite.org/lang_transaction.html): "..The explicit COMMIT command runs immediately, even if there are pending SELECT statements..." is still a bit contraire, it sounds like it should be possible to do what I claimed since I assume only a reading select statement pending. anyway, it would be simple to test with a little test code, I guess I'll do this the next days just to see what happends. I never did such loops with an explicit transaction inside so far, only guessing.. > >> I'm still curious what would be the error code of sqlite3_step >> if I would delete a row that would be one of the rows >> reached by the running statement, but that's another issue...;) > > There wouldn't be any errors. The row just wouldn't be returned, as if > it never existed. I was expecting it to be more complicate because sqlite is running a sort of machine code while doing the select stepping and for example if that is using a temporary internal table that looses now an entry in a source table, for this sqlite would need to re-build a temporary internal table during each step... or how about a "SELECT ... LIMIT N" statement that would now need to run one item further than originally seen by the prepare function? anyway, I'm afraid I'm about to highjack this thread... ;) Marcus > > Igor Tandetnik > > > > _______________________________________________ > 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
