html - 在一张表中插入多个数据

Question

我在学生表中有 4 个 A、B、C、D 类的 120 名学生：Id_student、Name、Class 我有一个付款表：Id、Id_student、Class、Payment、Date_payment、Status 我如何询问如何将所有学生插入状态为 not_complete 的 A 类

Answer 1

INSERT INTO payment (Id_student, Class, Status)
SELECT Id_student, Class, "not_complete" AS Status
FROM student
WHERE Class = "A";

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Answer 2

将全部插入支付值(R1001,'A',"未完成") 插入支付值(S1002,'B',"未完成") 插入支付值(T1003,'C',"未完成") 插入支付值(T1003,'C',"not complete") 转换成支付值(Z1003,'D',"not complete")............更新支付集class='A' where class in ('B','C','D'); SELECT Id_student, Class, Status FROM payment WHERE Class = "A";