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What will be the output of this Power Query step?

medium📝 Formula Result Q5 of 15
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What will be the output of this Power Query step?
Table.Distinct(Source, {"CustomerID"})

Assuming Source has duplicate CustomerID values.
ATable with all rows including duplicates
BTable with unique CustomerID rows only
CTable with only duplicate CustomerID rows
DTable with CustomerID column removed
Step-by-Step Solution
Solution:
  1. Step 1: Understand Table.Distinct function

    This function removes duplicate rows based on specified columns.
  2. Step 2: Apply to CustomerID column

    It keeps only unique CustomerID rows, removing duplicates.
  3. Final Answer:

    Table with unique CustomerID rows only -> Option B
  4. Quick Check:

    Table.Distinct = Remove duplicates [OK]
Quick Trick: Table.Distinct removes duplicate rows [OK]
Common Mistakes:
  • Thinking duplicates are kept
  • Assuming column is removed
  • Confusing distinct with filtering duplicates only

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