这个很简单，chengre他是让你输得，你也可以不输呀，就算输了也会在Stored procedure执行中被更改你可以理解成参数赋初值就这样子。

Xu BeihongJuly 19， 1895 September 26， 1953 born in Yixing， Jiangsuwas a Chinese painter Considered a modern master in China， his merging of Western techniques with classic Chinese approaches was。

25They#39re having a test this week 26Mr Cheng is visiting our village this month27Lookchengre！ Maria and Tom are dancing under the tree28Listen！ Our English teacher is singing the popular English song。

您chengre的不返回意思是是没有这个列还是有这列但是值为空值为空正常，可能表中的这个值也为空，但查出来只有一列就不知道了呵呵。

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