Power BI - Data Cleaning with Power Query
After pivoting, your new columns show null values unexpectedly. What is a common cause?
After pivoting, your new columns show null values unexpectedly. What is a common cause?
medium📝 Formula Fix Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze null values after pivot
Nulls often appear if source rows lack values in pivot column.Step 2: Confirm missing data effect
Missing pivot keys cause empty cells in new columns.Final Answer:
Some rows have missing values in pivot column -> Option DQuick Check:
Nulls after pivot = missing pivot keys [OK]
Quick Trick: Check for missing pivot column values if nulls appear [OK]
Common Mistakes:
- Blaming aggregation for nulls
- Assuming columns deleted
- Ignoring missing data
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