Minor Description
We would like to make it possible to specify connection properties in OPTIONS part of the sql query that uses jdbc driver. For example:
CREATE TEMPORARY TABLE abc
USING org.apache.spark.sql.jdbc
OPTIONS (url '$url', dbtable '(SELECT ROWID FROM test.people)', user 'testUser', password 'testPass')
To do this, we will do minor changes in JDBCRelation and JDBCRDD.
