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子查询-exists关卡bug #66

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yyeerr opened this issue Sep 12, 2024 · 0 comments

yyeerr commented Sep 12, 2024 •

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参看答案用的是not exists，但用其它数据库客户端模拟实测发现用class_id <> all subquery可以达到同样的效果，而在这个关卡运行会报错

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