说明: 数据库系统概念第六版答案(包括实践习题,习题)例如3.11答案Exercises •Write the following queries in SQL, using the university schema. •Find the names of all students who have taken at least one Comp. Sci. course; make sure there are no duplicate names in the result. •Find the <qq_29335041> 上传 | 大小:24mb