当这个语句被包含到一个存储过程中后，将对已执行语句的所有返回值进行错误检查。

When this statement is included in a stored procedure, all return values of executed statements are checked for errors.

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往返次数是在语句执行过程中发送给数据服务器的请求数。

Number of round trips is the number of requests issued to the data server during the execution of the statement.

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该语句在过程虚拟机(PVM)中执行。

The statement was executed within the procedure virtual machine (PVM).

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