Notice that for each repetition group a common table expression has been created (lines 2, 18 and 38).

注意，已为每个副本组创建了一个公共表表达式(第2、18和38行)。

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This second select statement is joined with the Common Table Expression (CTE) itself by linking parent to child data.

第二个SELECT语句通过将父数据链接至子数据与公共表表达式 (CTE) 联接。

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According to the SQL Standard, the method to evaluate hierarchical or bi-directional data is the Recursive Common Table Expression (RCTE).

根据SQL标准，评估分层或双向数据的方法为递归通用表表达式(RCTE)。

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According to the SQL Standard, the method to evaluate hierarchical or bi-directional data is the Recursive Common Table Expression (RCTE).

根据SQL标准，评估分层或双向数据的方法为递归通用表表达式(RCTE)。

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