I have 2 column, column_A is origination, column B is source of origination, how to we have result in Column C Examples: A7 - A5 is 1, A9 -- A7 is 2 due to A9 from A7 and A7 from A5, the same A10 -- A7 is 3 due to A10 from A9 and A9 from A7 and A7 from A5. Column_A Column_B Result_Column_C A5 A7 A5 1 A8 B1 1 A9 A7 2 A10 A9 3
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