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Tracks/Set operations

Set operations

UNION, INTERSECT, and EXCEPT.

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UNION
INTERSECT
EXCEPT

0/9 solved

  1. 1—330. Combine Employees and Contractors with UNION
    easy
  2. 2—042. Combined List: Employees and Customers Named Alex
    medium
  3. 3—082. Retained Customers: Ordered in Both Month 1 and Month 2
    medium
  4. 4—179. Combine Customer Lists with UNION ALL vs UNION
    medium
  5. 5—180. Customers Who Bought Both Online and In-Store
    medium
  6. 6—181. Products Not Currently on Sale Using EXCEPT
    medium
  7. 7—191. Find Missing IDs in a Sequence
    medium
  8. 8—096. Churned vs Retained Customers
    hard
  9. 9—283. Graph Shortest Path via BFS
    hard