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。

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Not long after the news of the commission's objections filtered out the justice department backed up its ruling by issuing a statement arguing that the deal does not raise any antitrust concerns.

在欧盟竞争委员会反对此收购消息公开不久，美国司法部发表申明坚持自己之前的立场，表示该收购没有触犯任何反垄断规则。

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

signal语句用于显式地发出一个错误并强制调用处理程序。

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She said in the statement that she chose to raise her son as a single parent and that the two agreed that it would be a private matter.

NPR: Domenici Acknowledges Having Son Outside Marriage

Not long after the news of the commission's objections filtered out the justice department backed up its ruling by issuing a statement arguing that the deal does not raise any antitrust concerns.

ECONOMIST: Oracle and Sun Microsystems

Lockhart said Gore stands by his earlier statement that wasn't aware the event was explicitly to raise funds.

CNN: AllPolitics - Gore's Fund-Raising Woes