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Stack the rows from inputs, one on top of the other.
2 or more
•Select Align columns by to Header name if you want line up column values by header name (e.g. the 'id' column in input 1 with the 'id' column in input 2) and Column number to align by the column number (e.g. the first column of input 1 with the first column of input 2).
•The output depends on the vertical (Y-axis) position of the inputs.
•If you align by Column number the header of the first input is used.