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I remember someone told me to use <> rather than != but I forgot the reason why. I cannot find the answer on Google. Just want to know if they're just the same comparison operator or not because we're on refactoring stage of our MySQL codes now.

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<> is an ANSI SQL compatible operator, whereas != is not.

So presumably you must use the former, since the latter is just a mysql's sql extension.

References:

<not equals operator> ::= <>

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