While this particular example might not be considered severe, other more malicious code could be added, especially DELETE or UPDATE statements that modify tables.

虽然这个特例的后果可能并不太严重，但完全有可能添加更恶意的代码，尤其是会修改表的DELETE或update语句。

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Since those triggered actions are typically one or more insert, UPDATE, or DELETE statements, the overhead of triggers can be substantial in a mass insert operation.

由于那些被触发的动作通常是一条或多条insert、UPDATE或delete语句，因此，在数据量很大的insert中，触发器的开销会很大。

youdao

In most cases, well-suited SQL statements are very simple SELECT statements that reference only a single table or are INSERT, UPDATE, and DELETE (UID) operations that are executed many times.

在大多数情况下，非常适合使用参数标记的sql语句要么是非常简单的SELECT语句(只引用一个表)，要么是被多次执行的INSERT、UPDATE和DELETE (uid)操作。

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