[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQdpOKmmNS2kTj8BB_YqP7nq5URh5z9VCk-X8B1XDd0A":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-06-13 20:48:06",151222123,[8,9,10,11],"'SD'=计算机","SD='计算机'","'SD=计算机'","SD=计算机",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},11,"0c903e53ceb7e1bfeec9071b3d44288e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd5f0f9468529999f4bb0a223886d4920.jpg","数据库原理及应用（2022-2023-2）","2f5325a31fff4f7eb4e991afc705eccf","第二章第二次简单查询习题","学生关系模式为S(Sno, Sname, SD, Sage),其中:Sno表示学生学号,Sname表示学生姓名,SD表示学生所在系,Sage表示学生年龄.试将下面的SQL语句空缺部分补充完整,使其可以查询计算机系学生的学号、姓名和年龄. SELECT Sno,Sname,Sage FROM S WHERE ( )",[21,33,42,51,60,69,78,87,90,99],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-06-13 20:48:05",151222116,[26,27,28,29],"ORDER BY","DESC","GROUP BY","DISTINCT","可以在SQL查询时去掉重复元组的关键词是( )","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],151222117,[37,38,39,40],"StName LIKE '张%'","StName LIKE '张*'","StName LIKE '张?'","StName LIKE '张_'","如果查询所有姓张的学生信息,则WHERE条件应为 ( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],151222118,[46,47,48,49],"'_ _ W _ %'","'%_ W _ _'","'_ W _ _'","'_ W _ %","设有一个关系:DEPT(DNO,DNAME),如果要找出倒数第三个字母为W,并且至少包含4个字母的DNAME,则查询条件子句应写成WHERE DNAME LIKE()",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],151222119,[55,56,57,58],"'alibaba'","'aaa'","'bbaa'","'bba'","对模糊查找 like '_a%', 能与之匹配的结果是 ( )",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":31,"type":32},[],151222120,[64,65,66,67],"SELECT * FROM StInfo WHERE 性别='男' OR 年龄<20","SELECT * FROM StInfo WHERE 性别='男' OR 年龄<'20'","SELECT * FROM StInfo WHERE 性别=男 AND 年龄<'20'","SELECT * FROM StInfo WHERE 性别='男' AND 年龄<20","从学生表StInfo(学号,姓名,性别,年龄)查询年龄小于20岁的男学生信息,正确的SQL语句是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":31,"type":32},[],151222121,[73,74,75,76],"C='C1' OR C='C2' OR D>10","(C='C1' OR C='C2') AND D>10","D>10 AND C='C1' OR C='C2'","D>10 OR C='C1' AND C='C2'","在关系R中,若要找出属性C的值为'c1'或'c2',并且属性D的值大于10的所有元组,选择子句中的WHERE后应表达为( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":31,"type":32},[],151222122,[82,83,84,85],"1","2","3","4","已知成绩关系如下表所示,执行下面的SQL语句: SELECT COUNT(DISTINCT学号) FROM成绩 WHERE分数>60 查询结果中的行数是( ). \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff0264eabda53dae28495f130f53c1a53.png\">",{"answer":88,"createTime":5,"id":6,"options":89,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":31,"type":32},[],151222124,[94,95,96,97],"SELECT * FROM SCInfo WHERE Score=NULL","SELECT * FROM SCInfo WHERE Score IS ''","SELECT * FROM SCInfo WHERE Score =''","SELECT * FROM SCInfo WHERE Score IS NULL","成绩表 SCInfo(StId,CNo,Score) 的属性StId表示学号,CNo为课程编号,Score为成绩.从SCInfo表中找出无成绩的元组的SQL语句是( )",{"answer":100,"createTime":5,"id":101,"options":102,"question":107,"source":31,"type":32},[],151222126,[103,104,105,106],"SELECT mID,year,director FROM Movie","SELECT mID,title FROM Movie","SELECT mID,title,year,director FROM Movie","SELECT mID,title,director FROM Movie","已知影片评论数据库包括如下表结构:Movie(mID,title,year,director)表,属性包括影片编号,影片名,发行年份以及导演.viewer(rID,name)者表,属性包括评论者编号,评论者姓名.ting(rID,mID,stars,ratingDate)表,属性包括评论者编号,影片编号,评分(1-5),评论日期.该数据库完成以下选择题. SQL语句SELECT*FROM Movie等价于下列哪一个语句()"]