Append 2 data sets together but keep data in source data set in columns of new data set

[Khristian_Evans]

Hi I want to Append two data sets together but keep data in source data set in columns of new data set. What I am doing now is leaving null values in those rows. These source data set rows are all the same so i need those populated in second data set I'm joining

[alexnajm]

Can you show us your inputs and expected output?