df.update { name }.asFrame { select { lastName } }
Input DataFrame: rowsCount = 7, columnsCount = 5
Step 1: Update
DataFrame [7 x 5]
Output DataFrame: rowsCount = 7, columnsCount = 5
res.res shouldBe df.remove { name.firstName }
Input DataFrame: rowsCount = 7, columnsCount = 5
Output DataFrame: rowsCount = 7, columnsCount = 5