For example, a dummy character, dummy plug, or a dummy statement.

例如，哑字符，假插头，哑语句。

youdao

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。

youdao

Note that the dummy variable declaration has disappeared: you don't need it because you now have an actual statement in the exception handler.

注意，伪变量声明已经没有了：不再需要它是因为现在在异常处理函数中有了实际的语句。

youdao