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Which operator is used to check whether the expression is “NULL”?

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+1 vote
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in MySQL by (122k points)
Which operator is used to check whether the expression is “NULL”?

(a) IS NULL

(b) NOT NULL

(c) ON

(d) None of the mentioned

I had been asked this question during an interview.

This intriguing question comes from Null: the Four Letter Word topic in chapter Nulls and Conditions and Miscellaneous of MySQL

1 Answer

+1 vote
by (692k points)
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Best answer
The correct choice is (a) IS NULL

The explanation: None.

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