Pavel Luzanov <p(dot)luzanov(at)postgrespro(dot)ru> writes:
> When working with RAISE statement in PL/pgSQL, I found a strange
> situation with client_min_messages.
> According to the documentation, client_min_messages does not include the
> value 'INFO'.
Indeed. INFO messages cannot be suppressed by client_min_messages.
The reason is that they are emitted by commands like VACUUM VERBOSE,
where (presumably) the entire reason the user said VERBOSE is that
she wanted to see those messages.
I do not recommend using INFO in "RAISE" except in cases similar
to that one.
regards, tom lane