The Error Log Then uninstall the filter  log_filter_dragnet  component: The following sections describe aspects of  log_filter_dragnet  operation in more detail: UNINSTALL COMPONENT ’file://component_log_filter_dragnet’; •Grammar for log_filter_dragnet Rule Language •Actions for log_filter_dragnet Rules •Field References in log_filter_dragnet Rules Grammar for log_filter_dragnet Rule Language 1036 rule : IF  condition  THEN  action [ELSEIF  condition  THEN  action ] ... [ELSE  action ] . condition : { field comparator value | [NOT] EXISTS  field |  condition  {AND | OR} condition } action : { drop | throttle { count  |  count  /  window_size } | set  field  [:= | =]  value | unset [ field ] } field : { core_field |  optional_field |  user_defined_field } core_field : { time | msg | prio | err_code | err_symbol | SQL_state | subsystem } optional_field : { OS_errno | OS_errmsg | label | user | host | thread | query_id | source_file | source_line | function | component } The following grammar defines the language for  log_filter_dragnet  filter rules. Each rule is an  IF statement terminated by a period ( . ) character. The language is not case-sensitive.