DELETE ns4_event_log WHERE el_created_on < '{0}' DELETE ns4_email WHERE (em_folder = 3 OR em_folder = 5 OR em_folder = 7) AND em_created_on < '{0}'
DELETE ns4_event_log WHERE el_created_on < '20190401' DELETE ns4_email WHERE (em_folder = 3 OR em_folder = 5 OR em_folder = 7) AND em_created_on < '20190401'