对于这两种平台上的数据库，您都可以声明错误处理程序，如果带有特殊的错误代码(SQLCODE或SQLSTATE)的sql语句失败，那么该处理程序将判定应采取哪些措施。

For both databases you can declare error handlers that will determine what action are taken if an SQL statement fails with a particular error code (SQLCODE or SQLSTATE).

youdao

Number one, the basic structure is that you have a pointer and it points over to a pointee, but the pointer and pointee are separate and the common error is to set up a pointer but to forget to give it a pointee.

第一，基本结构是，你有一个,指向数据的指针，但是那个指针和数据,是分开的，通常错误是声明了一个指针,但是没有指向一个数据。

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