PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> psql -c "begin;select pg_notify('channel', concat_ws(' = ', 'a',
> clock_timestamp()::text));commit;select pg_sleep(10);begin;select
> pg_notify('channel', concat_ws(' = ', 'b',
> clock_timestamp()::text));commit;select now(), clock_timestamp();"
I think the main reason why this isn't reporting any notifications
is that you forgot to issue a LISTEN.
regards, tom lane