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转自:http://blog.csdn.net/fengfeng91/article/details/15029173 [sql] view plain copy create table student( sno varchar2(10) primary key, sname varchar2(2 阅读全文
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转自:http://yuncode.net/code/c_58df7a8ca687e58 SELECT t1.student_id FROM (SELECT score, student_id FROM student_score WHERE course_id = 1 ) t1, (SELECT 阅读全文
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转自:https://www.cnblogs.com/luobailin/p/5934314.html select 训练 --1、查询“c001”课程比“c002”课程成绩高的所有学生的学号;SELECT b.sno FROM (SELECT * FROM sc WHERE cno='c001') 阅读全文