Hello @rvnth,
it's feasible via a query activity, bellow an exemple.
Content of the expression is :
Iif(AddDays(DateOnly(@created) , 11) > AddDays(DateOnly(@lastModified) , 21) , AddDays(DateOnly(@created) , 11) , AddDays(DateOnly(@lastModified) , 21))
I took @creates as your column1 and @lastM...