This method receives several parameters, including a SQL statement and a result handler, and returns an object of generic type t.

这个方法接收多个参数，包括一条sql语句和一个结果处理程序，并返回一个泛型t的对象。

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Also, the response to each of the anticipated exceptions is to do nothing, but the CONTINUE HANDLER declaration expects a complete SQL statement; hence the dummy assignment.

另外，对于每种可能出现的异常的响应是不做任何事，但是CONTINUE HANDLER声明需要一个完整的sql语句；因此使用伪赋值。

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If a statement raises a condition for which a handler exists, the values of the SQLSTATE and SQLCODE variables are available at the beginning of the handler execution.

如果某条语句发出一个存在处理程序的条件，那么SQLSTATE和SQLCODE变量的值就可以在开始执行处理程序时获得。

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