These next key locks are only obtained when the key INSERT finds that a scanner with a Repeatable Read (RR) isolation level has a row lock on the next-higher key in the index.

这些next key锁只有在key INSERT发现带有Repeatable Read (RR)隔离级别的扫描器在索引中的next - higher键上有一个行锁时才能获得。

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