PowerShell - File and Directory Operations
You have a CSV file with duplicate headers. What happens when you run
Import-Csv on it?You have a CSV file with duplicate headers. What happens when you run Import-Csv on it?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Import-Csv behavior with duplicate headers
Import-Csv uses headers as property names; duplicates overwrite previous ones.Step 2: Result of duplicates
Only the last column with the duplicate header remains accessible as a property.Final Answer:
Only the last column with the duplicate header is kept -> Option DQuick Check:
Duplicate headers cause last column to overwrite [OK]
Quick Trick: Duplicate headers overwrite earlier columns in Import-Csv [OK]
Common Mistakes:
- Expecting error on duplicates
- Thinking columns get renamed automatically
- Assuming columns merge
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