Bulk Operation

SPARK-19842 [Performance] Star schema detection improvements

SPARK-19842 [Performance] Redundant join elimination

SPARK-19842 [Performance] Distinct elimination

SPARK-19842 [Performance] Group By Push Down through Join

SPARK-19842 [Performance] Existential Subquery to Inner Join

SPARK-19842 [Performance] Inner Join Elimination based on Informational RI constraints

SPARK-19842 Add DDL support to modify constraint state for a given constraint

SPARK-19842 Add support for VALIDATE option to ALTER TABLE ADD CONSTRAINT command

SPARK-19842 DROP TABLE should automatically drop any dependent referential constraints or raise error.

SPARK-19842 ALTER TABLE table statements such as RENAME and CHANGE columns should raise error if there are any dependent constraints.

SPARK-19842 Add ALTER TABLE ADD CONSTRANT DDL to support defining primary key and foreign keys