16.10.2023 18:46, Tom Lane wrote:
> Richard Guo <guofenglinux@gmail.com> writes:
>> I came across an Assert failure while running sqlancer. The repro query
>> is
> Hmm. AFAICT, the critical thing about this CHECK condition is simply
> that it's bulky enough to create an out-of-line toasted "conbin" field
> in pg_constraint. When we come to ON COMMIT DROP, we have to delete
> the pg_constraint entry and thereby the toast item, and we evidently
> lack a snapshot at that point.
That's very similar to bug #18127, and looks like one more case to the
collection [1], with RemoveConstraintById() -> CatalogTupleDelete() ->
simple_heap_delete() ...
https://www.postgresql.org/message-id/9541c507-a325-7768-38b0-90f6532c01e3%40gmail.com
Best regards,
Alexander