使用FLUSH PACKAGE命令来删除包缓存器中当前所有缓存的动态sql语句，并强制隐式地编译下一请求。

Use the FLUSH package command to remove all cached dynamic SQL statements currently in the package cache and force the next request to be implicitly compiled.

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signal语句用于显式地发出一个错误并强制调用处理程序。

The SIGNAL statement is used to explicitly raise an error and force the invocation of a handler.

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我们特意选择了比许多 ATDD和BDD框架更加灵活的方式，没有神奇的词汇或者强制的语句结构。

We purposely chose to be more flexible than many of the ATDD and BDD frameworks out there, so there are no magic words or imposed sentence structure.

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