内部子查询是相关子查询。

The inner sub-query is a correlated sub-query.

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另外，不相关子查询被转换成了相关子查询。

In addition, the non-correlated sub-query has been transformed to a correlated sub-query.

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以上查询包含一个相关子查询，因为主查询和子查询依靠于同一个表，即employees表。

The query above contains a correlated subquery, since the main query and the subquery are relaying on the same table, the employees table.

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