Q. Which function returns NULL if expr1 = expr2?

  • (A) CASE
  • (B) CHECK TABLE
  • (C) IFNULL()
  • (D) NULLIF()
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✅ Correct Answer: (D) NULLIF()
Explanation: This question asks about a function in MySQL that checks if two expressions are equal. If they are equal, it returns NULL. Let's break down the options:

Published by Ranjeet ⭐ 34.60K Points at 22-Mar-2025 12:46 pm in MySQL

Explanation by: Ranjeet
This question asks about a function in MySQL that checks if two expressions are equal. If they are equal, it returns NULL. Let's break down the options:

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