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11. SQL Essentials & Advanced
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Total cards: 3•Content version: v3•Public deck•Updated: 8/1/2026
Card preview (3)
#1
Front (Question)
UNION
Back (Answer)
Everything but excluding duplicates
#2
Front (Question)
UNION ALL
Back (Answer)
Everything including duplicates
#3
Front (Question)
INTERSECT
Back (Answer)
Only the duplicates