Only if the WHEN clause evaluates to true will the action part of trigger statement be executed.

仅当when子句的计算结果为真时，触发器语句的操作部分才会执行。

youdao

You could trigger any action, such as running a process or performing a backup.

可以触发任何操作，比如运行进程或执行备份。

youdao

Otherwise the action part of the trigger statement does not get executed.

否则，将不执行触发器语句的操作部分。

youdao

Israeli Prime Minister Benjamin Netanyahu has warned that any such action will trigger unilateral steps from the Israeli side.

VOA: standard.2009.11.18

More worrisome is the potential for that action to trigger a real problems in the credit default swap market, causing true chaos.

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Senate Majority Leader Harry Reid, D-Nevada, said the collapse should trigger action.

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That's partly because they are structured in a way that doesn't require them to sell securities to pay departing investors, an action that can trigger capital gains.

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