首页DECLARE i INT DEFAULT 1; -- 插入年龄 SET i = 6; WHILE i <= num_records DO INSERT INTO student (age) VALUES (CONCAT(i,'岁')); SET i = i + 1; END WHILE;

DECLARE i INT DEFAULT 1; -- 插入年龄 SET i = 6; WHILE i <= num_records DO INSERT INTO student (age) VALUES (CONCAT(i,'岁')); SET i = i + 1; END WHILE;

时间: 2024-04-14 16:32:05 浏览: 23

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你的问题是：上面的代码段是用来做什么的？这段代码是一个简单的SQL语句，用于向名为"student"的表中插入一系列年龄数据。首先，它声明了一个整数变量"i"并将其默认值设置为1。然后，它将"i"的值设置为6。接下来，使用WHILE循环来重复执行以下操作直到满足条件：向"student"表中插入一个新的记录，记录的"age"字段的值是将"i"与字符串"岁"连接起来得到的结果。每次循环结束后，"i"的值递增1。因此，这段代码的目的是向"student"表中插入从6岁到num_records（一个变量，表示插入的记录数目）岁的记录。

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