How do I combine two datasets from two different Google sheets into the same table

[CCgoh]

Hi all, how do I combine two datasets together (they are with the same exact columns) we just split them into the active database and an archived database. For analysis purposes we need to combine two tables together to get a better snapshot. How do I do that in Google studio?

The number of rows are too large hence the usual sheets merge or import range doesnt work.