string(305) "select s.*, mt.tipo, mt.id as idTipo from WUF__tbl1999__singles s inner join WUF__tbl1999__grupos g on g.iniciales = 'mggp' and g.id_grupo = s.id_grupo inner join WUF__tbl2019__discos d on d.iddisco = s.id_disco inner join WUF__tbl1999__material_tipos mt on s.tipomaterial = mt.id where s.id_disco ='50'"