$dbw->delete(
'log_search',
[ 'ls_field' => 'target_author_actor', 'ls_value' => '' ],
__METHOD__
);
$ct = $dbw->affectedRows();
$dbw->delete(
'log_search',
[ 'ls_field' => 'target_author_actor', 'ls_value' => '' ],
__METHOD__
);
$ct = $dbw->affectedRows();