ggg = alasql(
"select d.* , minrow.Prijs as minprijsdag, d.Prijs - minrow.Prijs as verschil from ? as d join (select Datum,Prijs from ? d2 where Prijs in (select min(Prijs) from ? as x where x.Datum = d2.Datum )) as minrow on d.Datum = minrow.Datum",
[belpex_2425c, belpex_2425c, belpex_2425c]
)