$start = $db->selectField( 'logging', 'MIN(log_id)', false, __METHOD__ );
if ( !$start ) {
$this->output( "Nothing to do.\n" );
$start = $db->selectField( 'logging', 'MIN(log_id)', false, __METHOD__ );
if ( !$start ) {
$this->output( "Nothing to do.\n" );