signal statement是什么意思_signal statement中文

signal statement中文什么意思

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Signal statements will also roll back changes caused within the trigger
Signal语句也将回滚在触发器内发生的更改。
It is important to realize the impact of the inclusion of our signal statement
认识到包含signal语句的效果是很重要的。
The signal statement rolls back the changes that were attempted by the triggering statement that is , our update statement
Signal语句回滚由触发语句（也就是我们的update语句）尝试的更改。
You can use a signal statement to raise an error condition if the business rule defined in your trigger is violated
如果违反了您在触发器中定义的业务规则，就可以使用signal语句来抛出一个错误条件信号。

signal statement中文什么意思