Support database DDLs in SQL CLI

CREATE DATABASE [ IF NOT EXISTS ] [ catalogName.] dataBaseName [ COMMENT database_comment ] [WITH ( name=value [, name=value]*)]

DROP DATABASE [ IF EXISTS ] [ catalogName.] dataBaseName [ (RESTRICT|CASCADE)]

ALTER DATABASE [ catalogName.] dataBaseName SET ( name=value [, name=value]*)

USE [ catalogName.] dataBaseName