mysql — The MySQL Command-Line Client ln -s /dev/null $HOME/.mysql_history If the  --syslog  option is given,  mysql  writes interactive statements to the system logging facility. Message logging has the following characteristics. Logging occurs at the “information”  level. This corresponds to the  LOG_INFO  priority for  syslog  on Unix/ Linux  syslog  capability and to  EVENTLOG_INFORMATION_TYPE  for the Windows Event Log. Consult your system documentation for configuration of your logging capability. Message size is limited to 1024 bytes. Messages consist of the identifier  MysqlClient  followed by these values: The operating system user name (login name) or  --  if the user is unknown. The MySQL user name (specified with the  --user  option) or  --  if the user is unknown. The client connection identifier. This is the same as the  CONNECTION_ID()  function value within the session. The server host or  --  if the host is unknown. The default database or  --  if no database has been selected. The text of the logged statement. Here is a sample of output generated on Linux by using  --syslog . This output is formatted for readability; each logged message actually takes a single line. mysql>  help  search_string If you provide an argument to the  help  command,  mysql  uses it as a search string to access server-side help from the contents of the MySQL Reference Manual. The proper operation of this command requires that the help tables in the  mysql  database be initialized with help topic information (see Section 5.1.17, “Server-Side Help Support” ). If there is no match for the search string, the search fails: 442 4.5.1.4 mysql Client Server-Side Help syslog Logging Characteristics • SYSTEM_USER • MYSQL_USER • CONNECTION_ID : • DB_SERVER • DB • QUERY Mar 7 12:39:25 myhost MysqlClient[20824]: SYSTEM_USER:’oscar’, MYSQL_USER:’my_oscar’, CONNECTION_ID:23, DB_SERVER:’127.0.0.1’, DB:’--’, QUERY:’USE test;’ Mar 7 12:39:28 myhost MysqlClient[20824]: SYSTEM_USER:’oscar’, MYSQL_USER:’my_oscar’, CONNECTION_ID:23, DB_SERVER:’127.0.0.1’, DB:’test’, QUERY:’SHOW TABLES;’