Re: Typed-tables patch broke pg_upgrade

On ons, 2011-02-09 at 18:43 -0500, Tom Lane wrote:
> I find that pg_upgrade fails in HEAD when asked to do a 9.1-to-9.1
> upgrade of the regression database. It gets to this bit of the
> restore script:
>
> CREATE TABLE test_tbl2 OF public.test_type2;
>
> -- For binary upgrade, recreate dropped column.
> UPDATE pg_catalog.pg_attribute
> SET attlen = -1, attalign = 'i', attbyval = false
> WHERE attname = '........pg.dropped.2........'
> AND attrelid = 'test_tbl2'::pg_catalog.regclass;
> ALTER TABLE ONLY test_tbl2 DROP COLUMN "........pg.dropped.2........";
>
> and fails with
>
> ERROR: cannot drop column from typed table
>
> which probably is because test_type2 has a dropped column.

It should call

ALTER TYPE test_type2 DROP ATTRIBUTE xyz CASCADE;

instead. That will propagate to the table.

I'm not sure though, whether a composite type preserves the dropped
attribute for re-dropping in this case.