Tests to be fixed in 1.4 test suite

[smavros]

Errors

• [ ] JSONTest issue #52, 87 failures due to lack of dialect support for JSON type
• [ ] IdentityColumnTest the errors comes from the fact that one column of this test's table is named "desc" which collides with the SQL Standard DESC keyword.
• [ ] IdentityAutoincrementTest same as IdentityColumnTest
• [ ] CTETests use the INSERT INTO for tables with recursive keys (create table foo (id int primary key, num int references foo(id));) which is known to not work properly in Monet (https://github.com/MonetDB/MonetDB/issues/6131) e.g. insert into foo values (1,null), (2,1); raises FOREIGN KEY constraint 'foo.foo_num_fkey' violated
• [ ] QuotedNameArgumentTests are failing because of the NOT supported column CHECK constraint. Of course this is not raising an error or an exception but simply issues a warning through MonetDB dialect compiler so the user would know that the CHECK is a no-op. The problem comes from the fact that for the testing suite the SAWarnings are turned into errors (see. sqlalchemy/testing/warnings.py). Another issue with this group of tests is that we do not support comment_reflection which, I guess, was supposed to be supported given the fact that we support _COMMENT_s for SQL objects.

Failures

• [ ] != needs to be translated properly. #51