Bruce Momjian <bruce(at)momjian(dot)us> writes:
> pg_migrator requies tables using tsvector data types to be rebuilt, and
> there has been discussion of how to prevent people from accessing those
> columns before they are rebuilt. We discussed renaming the tables
> (affects all columns) or columns, using rules (not fine-grained enough),
> or using column permissions (doesn't affect super-users).
> My new idea is to mark the column as "dropped" and unmark them before
> rebuilding the table. That might be the best I can do. Comments?
You're expending a lot of work on solving the wrong problem. The right
solution is a temporary data type.
regards, tom lane