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

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。

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The XMLVALIDATE function in the action part of trigger statement validates the employee information specified in the INFO column.

触发器语句的操作部分的 XMLVALIDATE 函数验证在 INFO 列中指定的雇员信息。

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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.

CNN: States warned to inspect bridges

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.

WSJ: Calculating the Costs of Investing in ETFs