Re: BUG #15446: Crash on ALTER TABLE

Hi,

On 2019-01-05 12:11:45 +0000, Dean Rasheed wrote:
> It looks like the problem was introduced in PG11 by 16828d5c02 (Fast
> ALTER TABLE ADD COLUMN with a non-NULL default). The first ALTER TABLE
> adds a new column with a non-null default, setting atthasmissing and
> attmissingval. Then the second ALTER TABLE changes the type of the new
> column, but it fails to update attmissingval to match, and thus it
> falls over when trying to re-open the relation because the value in
> attmissingval is no longer compatible with the attribute type.

Paging Dr Dunstan.

Greetings,

Andres Freund