Tom, Sunday, October 31, 2010, 9:42:27 PM, you wrote: TL> Because the SQL standard says so. But there is not such thing in PostgreSQL as empty set as "IN ()" that must be false, because nothing element may be found in empty set. And I thought that instead of "IN ()" I could use "IN (NULL)", but I was failed and result was NULL and not FALSE. :( -- Paul -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
