HIVE-8739 : handle Derby errors with joins and filters in Direct SQL in a Derby-specific path (Sergey Shelukhin via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1639905 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5664 : Drop cascade database fails when the db has any tables with indexes (Venki Korukanti via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1639907 13f79535-47bb-0310-9956-ffa450edef68