prova questa
codice:SELECT * FROM registrazione where `data` ='2018-10-22' and idautista IN ( SELECT idautista FROM registrazione where `data` ='2018-10-22' GROUP BY `idautista` HAVING count(*)>1 )
prova questa
codice:SELECT * FROM registrazione where `data` ='2018-10-22' and idautista IN ( SELECT idautista FROM registrazione where `data` ='2018-10-22' GROUP BY `idautista` HAVING count(*)>1 )