On 28 Aug 2015, at 10:20am, Domingo Alvarez Duarte <sqlite-mail at dev.dadbiz.es> wrote:
> Please remember that the "random" function here is only a detail the real > problem is the "column expression" been reevaluated more than once. Yes. When considering fixes for this problem one needs to also consider non-deterministic user-defined functions, like Jean-Christophe Deschamps' function "new_uuid()" which returns a new value every time it is called. It's not good enough to make a fix explicitly for random(). I note with interest the constant SQLITE_DETERMINISTIC which may be helpful. So any fix for the overall problem must work * both with random() and with non-deterministic user-defined functions * with a column being used in WHERE * with a column being used in ORDER BY * with a column being used in LIMIT * with a column being used in OFFSET Simon.
