标题: [Oracle interview]What is the difference between a while statement and a do statement? [打印本页] 作者: 费庆龄 时间: 2013-8-16 16:31 标题: [Oracle interview]What is the difference between a while statement and a do statement? 作者: 程旭媛 时间: 2013-8-16 16:34
A while statement checks at the beginning of a loop to see whether the next loop iteration should occur. A do statement checks at the end of a loop to see whether the next iteration of a loop should occur. The do statement will always execute the body of a loop at least once.