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Add SQL query to find customers without a referee #5

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Merged
merged 1 commit into from
Oct 30, 2025
Merged

Add SQL query to find customers without a referee #5

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3 changes: 3 additions & 0 deletions Find Customer Referee
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
SELECT name
FROM Customer
WHERE referee_id IS NULL OR referee_id != 2;