@Vi_ciel
have a look on following flow, supporting different rows count e.g. on dt1, dt2
With datatable merge details:
input / output:
Kindly note: in case of multiple datatables will have the same column name, it has to be handled in advance by making the col names unique
find starter help here:
SideBySideMerge_AlsoDifferentRCnts.xaml (10.8 KB)