[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fXxOWGmCH0l1IgzvUeY8N72BKiADvsZqNAVv1v3RocYI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":22,"type":23},[],"2026-01-07 20:31:23",306101112,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},22,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_46678319","第3章作业","设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (1)检索所有男生基本信息. * from S where SEX='男'",[17,24,29,34,39,44,49,52,57,62],{"answer":18,"createTime":5,"id":19,"options":20,"question":21,"source":22,"type":23},[],306101106,[],"使用教学(STC)数据库, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63fbb3e951c0cfe17a073ef6b6f54c4e.png\"> 请将实现以下功能的SQL语句填写完整:: (4)查询每门课的课程基本信息及其先修课程名称(没有先修课的显示NULL). select a.cno,a.cname 课程名,a.cpno,b.cname as 先修课课程名 from course a join course b on","v1",2,{"answer":25,"createTime":5,"id":26,"options":27,"question":28,"source":22,"type":23},[],306101107,[],"设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (6)检索选修全部课程的学生姓名(SNAME). SELECT SNAME FROM S WHERE NOT EXISTS (SELECT * FROM C WHERE NOT EXISTS (SELECT * FROM SC WHERE C#= AND S#=S.S#))",{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":22,"type":23},[],306101108,[],"设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (3)检索"程军"老师所授课程的课程号(C#)和课程名(CNAME). select c#,cname from c teacher='程军'",{"answer":35,"createTime":5,"id":36,"options":37,"question":38,"source":22,"type":23},[],306101109,[],"使用教学(STC)数据库, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63fbb3e951c0cfe17a073ef6b6f54c4e.png\"> 请将实现以下功能的SQL语句填写完整:: (11)查询选了2门及以上课程的学生姓名和平均成绩,并按平均成绩降序排列. select sname,avg(grade) as 平均成绩 from student,sc where group by having (cno)>=2 order by desc",{"answer":40,"createTime":5,"id":41,"options":42,"question":43,"source":22,"type":23},[],306101110,[],"设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (8)检索选修课程名为"C语言"的学生学号(S#). --方法1: select distinct s# from sc where c# (select c# from c where cname='C语言') --方法2: select distinct s# from sc join c sc.c#=c.c# where cname='C语言'",{"answer":45,"createTime":5,"id":46,"options":47,"question":48,"source":22,"type":23},[],306101111,[],"设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (4)检索全部学生都选修的课程的课程号(C#)和课程名(CNAME). 方法1: SELECT C#,CNAME FROM C WHERE (SELECT * FROM S WHERE (SELECT * FROM SC WHERE C.C#=SC.C# AND S.S#=SC.S#)) 方法2: select c#,cname from c where c# in( select c# from sc group by having count(distinct s#)=(select count(*) from ))",{"answer":50,"createTime":5,"id":6,"options":51,"question":15,"source":22,"type":23},[],[],{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":22,"type":23},[],306101113,[],"使用教学(STC)数据库, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63fbb3e951c0cfe17a073ef6b6f54c4e.png\"> 请将实现以下功能的SQL语句填写完整:: (10)将计算机科学与技术专业的学生的成绩提高10%. update sc set grade= grade * where sno in (select sno from student where )",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":22,"type":23},[],306101114,[],"设有关系S(S#,SNAME,AGE,SEX)、C(C#,CNAME,TEACHER)和SC(S#,C#,GRADE),请将实现以下功能的SQL语句填写完整: (7)检索选修课程包含学号为2的学生所修课程的学生学号(S#). SELECT DISTINCT S# FROM SC SCX WHERE NOT EXISTS (SELECT * FROM SC SCY WHERE AND NOT EXISTS (SELECT * FROM SC SCZ WHERE SCZ.S#=SCX.S# AND SCZ.C#=SCY.C#))",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":22,"type":23},[],306101115,[],"使用教学(STC)数据库, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63fbb3e951c0cfe17a073ef6b6f54c4e.png\"> 请将实现以下功能的SQL语句填写完整:: (7)查询每个学生的学号、姓名、所有课程的总成绩. select sc.sno,sname, as 总成绩 from student,sc where student.sno=sc.sno sc.sno,sname"]