If the data is issuing a delete command on a database row, make sure that you add limit 1 to the end of your statement to minimize damage.

如果数据是对数据库行发出delete命令，请确保在语句最后添加limit 1，以尽可能减少损失。

youdao

You actually know whether the number is prime or not, immediately after the end of the for loop, even though you don't use the determined value until the if statement.

在 for 循环结束之后，就已经知道数字是否是素数，尽管在 if 语句之前并不使用判断结果。

youdao