How to merge rows in OpenRefine

Question

How to merge rows based on some ID field?

Original Table                   New Table

ID   | Field1 | Field2       ID     | Field1 | Field2
-----|------- |------         


        

Answer 1

With the cross() function, you can also achieve this result, but much faster.

It's basically a VLOOKUP on itself (all the rows of the same record) — skipping rows with data — that is after filtered to remove empty cells.

filter(cross(cells.ID.value, "TEST-FillUp", "ID"), vV, vV.cells["Field1"].value != null)[0].cells.Field1.value