Hi, If I use "NULL UNIQUE" when I create a table, it seems that only one NULL entry is allowed. Since NULL could mean unknown, in this case, two unknowns are not the same and I want to allow multiple nulls but I still want non null entries be unique. Is there a construct in mysql that can create a table column like this?
-- Regards, Peng -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
