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

It's not OpenRefine but I think it's a really good tool for a OpenRefine user. You could run this Miller (https://github.com/johnkerl/miller) command

mlr --csv reshape -r "Field" -o item,value \
then filter -x -S '$value==""' \
then reshape -s item,value input.csv

to have

ID,Field1,Field2
A,5,10
B,1,3
C,4,150

First I create a tidy version of the data (https://vita.had.co.nz/papers/tidy-data.pdf), and than I transform again it from long to wide format