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The expression ‘HI’ LIKE NULL results in _____________

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+1 vote
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in MySQL by (122k points)
The expression ‘HI’ LIKE NULL results in _____________

(a) True

(b) False

(c) NULL

(d) 0

The question was asked in homework.

Query is from Expression Evaluation and Type Conversion in chapter Data Types of MySQL

1 Answer

+1 vote
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Best answer
Right answer is (c) NULL

The best explanation: In MySQL, any pattern matching that is performed with the ‘NULL’ operand, fails. Expressions like: ‘abcdef’ LIKE NULL, NULL LIKE ‘%’, all result into the value NULL. NULL is not used to perform comparisons.

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asked Jul 21, 2021 in MySQL by Genesis (122k points)
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