Hi Kishor and Igor, Thanks very much. I'll test that and come back with first impression on speed.
Regards Ferret On Fri, Oct 10, 2008 at 9:48 PM, Igor Tandetnik <[EMAIL PROTECTED]> wrote: > ferrety ferrety <[EMAIL PROTECTED]> > wrote: >> Let me give you how the DBs looks like in a real example. >> Each DB contains a uniq table called URL : >> >> CREATE TABLE if not exists URL (name VARCHAR PRIMARY KEY, nbr >> INTEGER); >> >> $ sqlite3 /tmp/links1.db : >> sqlite> select * from URL; >> www.foo.com|17 >> www.bar.com|100 >> www.lost.com|5 >> >> $ sqlite3 /tmp/links2.db : >> sqlite> select * from URL; >> www.lost.com|22 >> www.bar.com|9 >> www.dharma.com|1 >> >> The objective is to merge these 2 DBs in the first one >> "/tmp/links1.db" to get this: >> $ sqlite3 /tmp/links1.db : >> sqlite> select * from URL; >> www.foo.com|17 >> www.lost.com|27 >> www.bar.com|109 >> www.dharma.com|1 > > Perhaps something like this: > > $ sqlite3 /tmp/links1.db > attach '/tmp/links2.db' as second; > > insert or replace into main.URL(name, nbr) > select u2.name, u2.nbr + coalesce(u1.nbr, 0) > from second.URL u2 left join main.URL u1 on (u2.name=u1.name); > > > 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
