Which operator checks for inequality (not equal) between two values?

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Multiple Choice

Which operator checks for inequality (not equal) between two values?

Explanation:
The not-equal comparison is done with the operator that checks for difference between two values. In SQL, this operator is written as <>. It evaluates to true when the two values are different and to false when they are the same. For example, a condition like value1 <> value2 will select rows where value1 and value2 do not match. While = checks for exact equality and < or <= compare order rather than equality, <> specifically expresses “not equal.” Note that some databases also accept != as a synonym, but <> is the standard. Also, if either side is NULL, comparisons like <> don’t yield true or false—they yield unknown, so you’d handle missing values with IS NULL or IS NOT NULL if needed.

The not-equal comparison is done with the operator that checks for difference between two values. In SQL, this operator is written as <>. It evaluates to true when the two values are different and to false when they are the same. For example, a condition like value1 <> value2 will select rows where value1 and value2 do not match. While = checks for exact equality and < or <= compare order rather than equality, <> specifically expresses “not equal.” Note that some databases also accept != as a synonym, but <> is the standard. Also, if either side is NULL, comparisons like <> don’t yield true or false—they yield unknown, so you’d handle missing values with IS NULL or IS NOT NULL if needed.

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