The following bug has been logged online:
Bug reference: 6242
Logged by: Sergey
Email address: sergey-1987(at)yandex(dot)ru
PostgreSQL version: 8.4.4
Operating system: FreeBSD 8.1-RELEASE
Description: ERROR: unexpected CASE WHEN clause: 333
Details:
create view test_view as
select
case n when null then 1 when 1 then 2 when 2 then 3 end
from (
values (null), (1), (2)
) as t(n)
pg_dump then fail with error: "ERROR: unexpected CASE WHEN clause: 333" but
select * from test_view does not.
This error occurs with the configuration "transform_null_equals".