Bryn Llewellyn <bryn(at)yugabyte(dot)com> writes:
> get stacked diagnostics msg = message_text;
> if msg != 'relation "pg_temp.flag" does not exist' then
This is pretty fragile --- eg, it will fall over with translated
messages. I think you could presume that if the error condition
name is undefined_table then you know what to do.
regards, tom lane