Modify type checkers to accept 'ANY' type
Handle null timestamps and dates coming out of JDBC adapter.
Merge branch 'master' of github.com:mehant/optiq into mehant-master
Allow CAST(expression AS ANY), and add a test for INTEGER + ANY. Add a new type family, NULL; ANY allowed the NULL value to be used in too many contexts.
Fix precedence of the item operator, 'map[index]'; remove the space before '[' when converting parse tree to string.