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=PIVOT.MELT(Sales[#All], "month")
D14
A
B
C
D
1
month
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product
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2
2026-01
NA
A
1,204
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892
4
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APAC
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417
5
2026-02
NA
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1,318
6
2026-02
EU
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903
7
2026-02
APAC
A
512
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