We used to allow IS NOT NULL restrictions on columns
that were not part of the materialized view's primary key.
It runs out that such restrictions are silently ignored (see #10365),
so we no longer allow such restrictions.
Update the documentation to reflect that change.
Also there was a mistake in the documentation.
It said that restrictions are allowed on all columns
of the base table's primary key, but they are actually
allowed on all columns of the view table's primary key,
not the base tables.
This change also fixes that mistake.
Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>
83932f9f37