The first table expression produces 57 rows, and the second table expression produces 5+7+9=21 rows.
第一个表表达式产生57行，而第二个表表达式则产生5+7+9=21 行。
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)。
Predicates that are pushed down to a nested table expression or materialized view without changing the result, and not already done automatically by DB2.
下推到嵌套表表达式或物化视图而不会改变结果，并且不是由DB2自动完成的谓词。
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。
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)。
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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