For fixing issue #3362 we added in materialized views, in some cases,
"virtual columns" for columns which were not selected into the view.
Although these columns nominally exist in the view's schema, they must
not be visible to the user, and in commit
3f3a76aa8f we prevented a user from being
able to SELECT these columns.
In this patch we also prevent the user from being able to use these
column names (which shouldn't exist in the view) in WHERE restrictions.
Fixes#4216
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Message-Id: <20190212162014.18778-1-nyh@scylladb.com>
