> Do the select and updates run inside a explicit transaction or they > run in individual implicit transactions? >
implicit - does that make a big difference in this case? If you really want a single query you could write something like: > > WITH data(id, c1, c2 /*, ... */) AS (VALUES > (123, 'abc', 'xyz' /*, ... */), > (456, 'xxx', 'yyy' /*, ... */), > (789, 'xyz', 'xyz' /*, ... */) > /* ... */ > ) UPDATE tab > SET (c1, c2 /*, ... */) = (SELECT c1, c2 /*, ... */ WHERE data.id = > tab.id) > WHERE id IN (SELECT id FROM data); > > But for that again means all the data (or the single query) needs to be built up in memory. cheers, Torsten _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
