The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/11/runtime-config-logging.html
Description:
begin cite
client_min_messages (enum)
Controls which message levels are sent to the client. Valid values are
DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, LOG, NOTICE, WARNING, ERROR, FATAL,
and PANIC. Each level includes all the levels that follow it. The later the
level, the fewer messages are sent. The default is NOTICE. Note that LOG has
a different rank here than in log_min_messages.
log_min_messages (enum)
Controls which message levels are written to the server log. Valid values
are DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR,
LOG, FATAL, and PANIC. Each level includes all the levels that follow it.
The later the level, the fewer messages are sent to the log. The default is
WARNING. Note that LOG has a different rank here than in
client_min_messages. Only superusers can change this setting.
log_min_error_statement (enum)
Controls which SQL statements that cause an error condition are recorded in
the server log. The current SQL statement is included in the log entry for
any message of the specified severity or higher. Valid values are DEBUG5,
DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR, LOG, FATAL,
and PANIC. The default is ERROR, which means statements causing errors, log
messages, fatal errors, or panics will be logged. To effectively turn off
logging of failing statements, set this parameter to PANIC. Only superusers
can change this setting.
and later
Severity Usage syslog eventlog
DEBUG1..DEBUG5 Provides successively-more-detailed information for use by
developers. DEBUG INFORMATION
INFO Provides information implicitly requested by the user, e.g., output
from VACUUM VERBOSE. INFO INFORMATION
NOTICE Provides information that might be helpful to users, e.g., notice of
truncation of long identifiers. NOTICE INFORMATION
WARNING Provides warnings of likely problems, e.g., COMMIT outside a
transaction block. NOTICE WARNING
ERROR Reports an error that caused the current command to
abort. WARNING ERROR
LOG Reports information of interest to administrators, e.g., checkpoint
activity. INFO INFORMATION
FATAL Reports an error that caused the current session to abort. ERR ERROR
PANIC Reports an error that caused all database sessions to
abort. CRIT ERROR
end cite
Obviously wrongly pointed that for log messages a valid value is "INFO", but
not "LOG" and for client messages a valid value is "LOG", but not "INFO".
According to the description this must be quite the contrary. And, btw,
client_min_messages accept both value.