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Which SQL clause commonly uses the EXISTS operator?

easy📝 Conceptual Q2 of 15
SQL - Subqueries
Which SQL clause commonly uses the EXISTS operator?
AORDER BY
BGROUP BY
CWHERE
DHAVING
Step-by-Step Solution
Solution:

  1. Step 1: Identify where EXISTS is used

    The EXISTS operator is typically used inside the WHERE clause to filter rows based on a subquery.

  2. Step 2: Eliminate other clauses

    GROUP BY, ORDER BY, and HAVING serve different purposes and do not commonly use EXISTS.

  3. Final Answer:

    WHERE -> Option C

  4. Quick Check:

    EXISTS used in WHERE clause [OK]
Quick Trick: EXISTS filters rows in WHERE clause [OK]
Common Mistakes:
MISTAKES
  • Using EXISTS in GROUP BY or ORDER BY
  • Confusing HAVING with WHERE for EXISTS

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