MySQL in and not in() empty list error

Original address : MySQL IN and NOT IN () Empty list error

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• If you take the initiative in SQL Write in statement IN (), May be an error ; Common in MyBatis Or spell it yourself SQL In the sentence , If you use literal quantity, you must pay attention to this ;
• If you are IN (SELECT xxx FROM xxx) This kind of words , Even if SELECT xxx FROM xxx If it is empty, no error will be reported .

More curious is , I feel this is quite simple , Why? MySQL Just don't deal with it ?

If I understand MySQL Source code , I'll add this feature , Hey !