Unpivot data with two headers

KNIME Analytics Platform
1

Hello everyone, I am new to KNIME. Does anyone have any ideas on how to unpivot data with two headers?

     2024       2024     2024      2024

Item Q1 Q2 Q3 Q4
A 10 20 10 56
B 12 10 15 70
C 13 5 20 51

2

Hello @ericcheung1979
What about nested headers like $2024_Q1$, $2024_Q2$… ?

BR

3

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