In MySQL, I believe the default SQL_MODE sets the "ONLY_FULL_GROUP_BY" option to false. This means you can do the following query:
SELECT name, address, MAX(age) FROM t GROUP BY name; I am not aware of other databases allowing you to set a mode to let you run these kind of invalid queries, which can give you invalid results and are dangerous IMO. http://dev.mysql.com/doc/refman/5.1/en/server-sql-mode.html#sqlmode_only_full_group_by -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
