Rahila Syed <rahilasye...@gmail.com> writes:
> CASE 2:
> postgres=# create view v as select 'abc' a;
> 2016-11-16 15:28:48 IST WARNING:  column "a" has type "unknown"
> 2016-11-16 15:28:48 IST DETAIL:  Proceeding with relation creation anyway.
> WARNING:  column "a" has type "unknown"
> DETAIL:  Proceeding with relation creation anyway.

We really ought to make that a hard error.  And ideally fix things so
that the type of the view column will be resolved as text, so that you
don't hit this condition in the first place; but there is no good that
comes out of allowing a view to be created like this.

> Attached WIP patch does that. Kindly let me know your opinion.

This is a seriously ugly kluge that's attacking the symptom not the
problem.  Or really, a symptom not the problem.  There are lots of
other symptoms, for instance

regression=# select * from v order by 1;
ERROR:  failed to find conversion function from unknown to text

                        regards, tom lane

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