Petr Jelinek <> writes:
> The comment above errhidefromclient says "Only log levels below ERROR 
> can be hidden from the client." but use of the errhidefromclient(true) 
> actually does hide the error message from client, client just gets 
> failed query without any message when used with ERROR level.

Um.  That seems pretty broken --- I think it's a violation of the wire
protocol spec.

I notice though that we allow client_min_messages to be set to FATAL,
which would be a different way of violating the protocol.  Maybe we
should reduce the max setting of that to ERROR?

libpq/psql seem to more or less survive this situation:

regression=# set client_min_messages to fatal;
regression=# select 2/0;
regression=# select 1;
(1 row)

but it doesn't really seem like a great idea.

                        regards, tom lane

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