trycatch

You can catch exceptions with TryCatch, for example.

你可以使用TryCatch来捕获异常，如下所示。

If you do have a TryCatch the exception is caught and your code is allowed to continue processing.

如果你设置一个TryCatch，异常就会被捕获，你的代码可以继续执行。

If the value returned is an empty handle, and you do not have a TryCatch in place, your code must bail out.

如果返回值是一个空句柄，并且你没有正确的设置TryCatch，你的代码就会崩溃。

Returns the name of the stored procedure or trigger where an error occurred that caused the CATCH block of a TRYCATCH construct to be run.

返回在其中出现了导致TRYCATCH构造的CATCH块运行的错误的存储过程或触发器的名称。

Returns the error number of the error that caused the CATCH block of a TRYCATCH construct to be run.

返回错误的错误号，该错误会导致运行TRYCATCH结构的CATCH块。