HIVE-3678. Provide schema upgrade scripts for schema changes introduced by the addition of Column Statistics support
Review Request #8119 - Created Nov. 18, 2012 and updated
Provide metastore schema upgrade scripts for MySQL/Derby/Postgresql/Oracle for the schema changes introduced by HIVE-1362. Change the column statistics schema to allow the metastore schema to be compatible across DB vendors and versions.
Tested the schema upgrade scripts.