It then specifies which table you are going to use-in this case, WordFrequency.

然后指定了将要使用的表—本例中是WordFrequency。

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This example USES a SELECT query that defines the inner join between WordFrequency and Companies, where the word matches the name of the company.

本例使用SELECT查询，它定义了WordFrequency和Companies之间的inner join，其中单词与公司名匹配。

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