Mysql学习笔记(查询语句练习题2)

表格详情： student表：sql teacher表：spa course表：blog score表：排序   Mysql查询语句练习： 23.查询“张旭“教师任课的学生成绩io select * from score where cno=(select cno from course where tno=(select tno from teacher where tname="张旭"));c

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