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用sql语句写一个存储过程

2025-03-26 12:11:09

推荐回答（2个）

回答1：

根据学生编号确定班级编号, 然后将班级的学生编号逐个按顺序在编号后加"A" -- "Z", 修改失败的返回失败值-1
上述思路有问题，学生编号应该与班级没有联系，因为班级会随时变换，而学生号不能总是变。
要查询学生的班级可直接从表中查取，无须改动学生编号。

回答2：

有难度。

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