该索引包含实际字符串的散列值，只能用于等式谓词，不能用于范围谓词。
This index contains hash values of the actual strings and can be used for equality predicates only, not for range predicates.
集群工作负载等级的值范围从0到9，而不包含启用和禁用这两个值。
Rather than holding values of enabled and disabled, the cluster workload rank value ranges from 0 to 9.
也就是说，您有权访问范围中可视的变量，而且它们将包含与范围活动完成时相同的值。
That is, you have access to the variables that were visible in the scope, and they will contain the same values as when the scope completed.
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