使用WITH return子句声明游标。

Declare the cursor using the WITH RETURN clause.

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对于每个将要返回的结果集，使用WITH return子句声明游标。

Declare cursors for each of the result sets to be returned that specify the WITH return clause.

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与消耗时间不同，对于声明游标的语句，CPU时间是打开游标、所有读取操作和关闭游标的时间总和。

Unlike elapsed time, in case of a declare cursor statement the CPU time is the sum of open, all fetched and close.

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