SQL 经典五十道题

--1.学生表
Student(S,Sname,Sage,Ssex) --S 学生编号,Sname 学生姓名,Sage 出生年月,Ssex 学生性别
--2.课程表 
Course(C,Cname,T) --C --课程编号,Cname 课程名称,T 教师编号
--3.教师表 
Teacher(T,Tname) --T 教师编号,Tname 教师姓名
--4.成绩表 
SC(S,C,score) --S 学生编号,C 课程编号,score 分数
*/
--创建测试数据

create table Student(S varchar(10),Sname varchar(10),Sage datetime,Ssex nvarchar(10))

insert into Student values(01 , 赵雷 , 1990-01-01 , 男)

insert into Student values(02 , 钱电 , 1990-12-21 , 男)

insert into Student values(03 , 孙风 , 1990-05-20 , 男)

insert into Student values(04 , 李云 , 1990-08-06 , 男)

insert into Student values(05 , 周梅 , 1991-12-01 , 女)

insert into Student values(06 , 吴兰 , 1992-03-01 , 女)

insert into Student values(07 , 郑竹 , 1989-07-01 , 女)

insert into Student values(08 , 王菊 , 1990-01-20 , 女)

create table Course(C varchar(10),Cname,varchar(10),T varchar(10))

insert into Course values(01 , 语文 , 02)

insert into Course values(02 , 数学 , 01)

insert into Course values(03 , 英语 , 03)

create table Teacher(T varchar(10),Tname,varchar(10))

insert into Teacher values(01 , 张三)

insert into Teacher values(02 , 李四)

insert into Teacher values(03 , 王五)

create table SC(S varchar(10),C varchar(10),score decimal(18,1))

insert into SC values(01 , 01 , 80)

insert into SC values(01 , 02 , 90)

insert into SC values(01 , 03 , 99)

insert into SC values(02 , 01 , 70)

insert into SC values(02 , 02 , 60)

insert into SC values(02 , 03 , 80)

insert into SC values(03 , 01 , 80)

insert into SC values(03 , 02 , 80)

insert into SC values(03 , 03 , 80)

insert into SC values(04 , 01 , 50)

insert into SC values(04 , 02 , 30)

insert into SC values(04 , 03 , 20)

insert into SC values(05 , 01 , 76)

insert into SC values(05 , 02 , 87)

insert into SC values(06 , 01 , 31)

insert into SC values(06 , 03 , 34)

insert into SC values(07 , 02 , 89)

insert into SC values(07 , 03 , 98)

--1、查询"01"课程比"02"课程成绩高的学生的信息及课程分数

SELECT a.* ,c.* 

from 

(select 

 a.* 

 from

(SELECT * from sc WHERE sc.C in(01))a

left JOIN(SELECT * from sc where sc.C in(02))b

ON a.s =b.s 

where a.score b.score ) a ,student c

where a.s =c.s;

--2、查询"01"课程比"02"课程成绩低的学生的信息及课程分数

SELECT a.* ,c.*

(SELECT a.*

(SELECT * FROM sc WHERE sc.C in(01))a

LEFT JOIN(SELECT * FROM sc WHERE sc.C in(02))b

ON a.s =b.s WHERE a.score b.score) a,student c

WHERE a.s =c.s

--3、查询平均成绩大于等于60分的同学的学生编号和学生姓名和平均成绩

SELECT

,c.Sname

,b.avgscore

(SELECT 

 a.s s

 , avg(a.score) avgscore

FROM sc a

GROUP BY a.s) b

 ,student c

WHERE

b.avgscore 60 AND c.s =b.s

--4、查询平均成绩小于60分的同学的学生编号和学生姓名和平均成绩

SELECT

,c.Sname

,b.avgscore

(SELECT 

 a.s s

 , avg(a.score) avgscore

FROM sc a

GROUP BY a.s) b

 ,student c

WHERE

b.avgscore 60 AND c.s =b.s

--5、查询所有同学的学生编号、学生姓名、选课总数、所有课程的总成绩

SELECT

 ,c.Sname

 ,b.num

 ,b.sumscore

 FROM

(SELECT

 a.s s

 ,COUNT(a.c) num 

 ,SUM(a.score) sumscore

FROM 

 sc a

GROUP BY a.s) b

 ,student c

WHERE b.s =c.s

--6、查询"李"姓老师的数量 

SELECT

COUNT(a.Tname)

(SELECT

 Tname Tname

 teacher

 WHERE

 Tname LIKE 李%) a

--7、查询学过"张三"老师授课的同学的信息 

SELECT

student d

,sc e

WHERE

e.S =d.S

(SELECT

 teacher a

 ,course b

WHERE

 a.T =b.T AND a.Tname=张三) 

--8、查询没学过"张三"老师授课的同学的信息 

SELECT

student a

WHERE

a.S NOT in 

(SELECT 

,student b

WHERE

a.S=b.S AND

a.C =

(SELECT

 b.c 

 teacher a

 ,course b

WHERE

 a.T =b.T AND a.Tname =张三))

--9、查询学过编号为"01"并且也学过编号为"02"的课程的同学的信息

SELECT

FROM 

sc a,

sc b,

student c

WHERE

a.S =b.S AND a.C=01 and b.C=02 

AND c.S =a.S

--10、查询学过编号为"01"但是没有学过编号为"02"的课程的同学的信息

SELECT

student a

WHERE

a.S in

SELECT

DISTINCT(sc.s)

WHERE

SELECT S

FROM sc

WHERE

 sc.C in(02)

GROUP BY

sc.S)

)

--11、查询没有学全所有课程的同学的信息 

SELECT

student b

WHERE

b.S in

SELECT

(SELECT

 a.S s

 ,COUNT(a.C) NUM

GROUP BY

a.s) a

WHERE

a.NUM 3

)

--12、查询至少有一门课与学号为"01"的同学所学相同的同学的信息 

SELECT

student e

WHERE

e.S in 

(SELECT

DISTINCT(c.s)

student c

,sc d

WHERE

c.s=d.s

d.C in 

(SELECT 

FROM 

student a

,sc b

WHERE

a.s =b.s AND a.s =01

)

--13、查询和"01"号的同学学习的课程完全相同的其他同学的信息 

SELECT

 sc a 

WHERE

 a.S =01 

SELECT

(SELECT

,COUNT(b.c) num

student a

,sc b

WHERE

a.s=b.S 

GROUP BY

WHERE

a.num=3 AND a.s 01

--14、查询没学过"张三"老师讲授的任一门课程的学生姓名 

SELECT

student a

WHERE

a.S NOT in 

SELECT

SELECT

,b.Cname

teacher a

,course b

WHERE

a.T=b.T

a.Tname=张三

,sc b

WHERE

a.c=b.C

)

--15、查询两门及其以上不及格课程的同学的学号，姓名及其平均成绩 

SELECT

,b.Sname

,a.avgscore

(SELECT

AVG(score) avgscore

WHERE

sc.score 60

GROUP BY

HAVING COUNT(s) =2) a

,student b

WHERE

a.S=b.S

--16、检索"01"课程分数小于60，按分数降序排列的学生信息

SELECT

(SELECT

a.s s

WHERE

a.C =01

a.score 60

ORDER BY a.score DESC

,student b

WHERE

a.s=b.S

--17、按平均成绩从高到低显示所有学生的所有课程的成绩以及平均成绩

SELECT

(SELECT

,b.score

,c.avgscore

LEFT JOIN

(SELECT

,AVG(a.score) avgscore

GROUP BY a.S) c

ON c.S =b.S) a

,student b

WHERE

a.S =b.S

ORDER BY avgscore DESC

--18、查询各科成绩最高分、最低分和平均分：以如下形式显示：课程ID，课程name，最高分，最低分，平均分，及格率，中等率，优良率，优秀率
--及格为 =60，中等为：70-80，优良为：80-90，优秀为： =90

SELECT

,b.Cname

,MAX(a.score)

,MIN(a.score)

,AVG(a.score)

,(SELECT COUNT(1) FROM sc WHERE sc.C=b.C and score 60)/(SELECT COUNT(1)FROM sc WHERE sc.C=b.c ) jigelv

FROM sc a ,course b 

WHERE a.C =b.C

GROUP BY

a.C

SELECT

,a.Cname

,MAX(b.score)

,MIN(b.score)

,CAST(AVG(b.score) AS DECIMAL(18,2)) pingqunfen

,CAST((SELECT COUNT(1) FROM sc WHERE sc.C=a.C AND sc.score 60)/

(SELECT COUNT(1) FROM sc WHERE sc.C =a.C) AS DECIMAL(18,2)) jigelv

,CAST((SELECT COUNT(1) FROM sc WHERE sc.C =a.c AND sc.score =70 AND sc.score 80)/

(SELECT COUNT(1) FROM sc WHERE sc.c =a.c) AS DECIMAL (18,2)) youlianlv

course a,sc b

WHERE

a.C=b.C

GROUP BY a.C,a.Cname

ORDER BY a.C DESC

--19、按各科成绩进行排序，并显示排名

SELECT 

,c.sname

,b.cname

,a.score

,(SELECT COUNT(1) FROM sc WHERE sc.C=a.c AND sc.score a.score)+1 mc

FROM 

sc a ,course b,student c 

WHERE a.c=01

AND a.c=b.c 

AND a.s=c.s

ORDER BY mc

SELECT 

,c.sname

,b.cname

,a.score

,(SELECT COUNT(1) FROM sc WHERE sc.C=a.c AND sc.score a.score)+1 mc

FROM 

sc a ,course b,student c 

WHERE a.c=02

AND a.c=b.c 

AND a.s=c.s

ORDER BY mc

SELECT 

,c.sname

,b.cname

,a.score

,(SELECT COUNT(1) FROM sc WHERE sc.C=a.c AND sc.score a.score)+1 mc

FROM 

sc a ,course b,student c 

WHERE a.c=03

AND a.c=b.c 

AND a.s=c.s

ORDER BY mc

--20、查询学生的总成绩并进行排名

SELECT 

,b.sumscore

,@rownum:=@rownum +1 AS rownum

(SELECT

a.s s

,SUM(a.score) sumscore

GROUP BY

ORDER BY sumscore DESC

) as b

,(SELECT @rownum:=0)r

--21、查询不同老师所教不同课程平均分从高到低显示 

SELECT

c.Tname

,b.Cname

,AVG(a.score) 

,course b

,teacher c

WHERE

a.C =b.C

AND b.T =c.T

GROUP BY a.C

ORDER BY AVG(a.score) DESC

--22、查询所有课程的成绩第2名到第3名的学生信息及该课程成绩

SELECT

(SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=01AND a.score b.score)+1 mc

FROM sc b WHERE b.c=01 HAVING mc BETWEEN 2 AND 3

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=02AND a.score b.score)+1 mc

FROM sc b WHERE b.c=02 HAVING mc BETWEEN 2 AND 3

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=03AND a.score b.score)+1 mc

FROM sc b WHERE b.c=03 HAVING mc BETWEEN 2 AND 3

,student b

WHERE

a.s =b.s

--23、统计各科成绩各分数段人数：课程编号,课程名称,[100-85],[85-70],[70-60],[0-60]及所占百分比 

SELECT

(SELECT

c.Cname

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=01) 85以上

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=01) [70_85]

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=01) [60_70]

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=01) 60一下

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=01)/(SELECT COUNT(*)FROM sc WHERE c=01AND C=b.c AND c.c=c) 85以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=01)/(SELECT COUNT(*)FROM sc WHERE c=01AND C=b.c AND c.c=c) [70_85]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=01)/(SELECT COUNT(*)FROM sc WHERE c=01AND C=b.c AND c.c=c)[60_70]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=01)/(SELECT COUNT(*)FROM sc WHERE c=01AND C=b.c AND c.c=c)60以上比率

FROM sc b ,course c WHERE b.c=c.c AND c.c=01

UNION ALL

SELECT

c.Cname

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=02) 85以上

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=02) [70_85]

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=02) [60_70]

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=02) 60一下

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=02)/(SELECT COUNT(*)FROM sc WHERE c=02AND C=b.c AND c.c=c) 85以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=02)/(SELECT COUNT(*)FROM sc WHERE c=02AND C=b.c AND c.c=c)[70_85]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=02)/(SELECT COUNT(*)FROM sc WHERE c=02AND C=b.c AND c.c=c)[60_70]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=02)/(SELECT COUNT(*)FROM sc WHERE c=02AND C=b.c AND c.c=c)60以上比率

FROM sc b ,course c WHERE b.c=c.c AND c.c=02

UNION ALL

SELECT

c.Cname

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=03) 85以上

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=03) [70_85]

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=03) [60_70]

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=03) 60一下

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.C=03)/(SELECT COUNT(*)FROM sc WHERE c=03AND C=b.c AND c.c=c) 85以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 85 AND a.C=b.c AND c.c=a.C AND a.score 70 AND a.C=03)/(SELECT COUNT(*)FROM sc WHERE c=03AND C=b.c AND c.c=c)[70_85]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 70 AND a.C=b.c AND c.c=a.C AND a.score 60 AND a.C=03)/(SELECT COUNT(*)FROM sc WHERE c=03AND C=b.c AND c.c=c)[60_70]以上比率

,(SELECT COUNT(*)FROM sc a WHERE a.score 60 AND a.C=b.c AND c.c=a.C AND a.C=01)/(SELECT COUNT(*)FROM sc WHERE c=03AND C=b.c AND c.c=c)60以上比率

FROM sc b ,course c WHERE b.c=c.c AND c.c=03) a

--24、查询学生平均成绩及其名次 

SELECT

,a.avgscore

,@rownum:=@rownum +1 AS rownum

FROM 

(SELECT

,AVG(score) avgscore

GROUP BY s

ORDER BY avgscore DESC

,(SELECT @rownum:=0)r

--25、查询各科成绩前三名的记录

SELECT

(SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=01AND a.score b.score)+1 mc

FROM sc b WHERE b.c=01 HAVING mc BETWEEN 1 AND 3

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=02AND a.score b.score)+1 mc

FROM sc b WHERE b.c=02 HAVING mc BETWEEN 1 AND 3

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=03AND a.score b.score)+1 mc

FROM sc b WHERE b.c=03 HAVING mc BETWEEN 1 AND 3

,student b

WHERE

a.s =b.s

--26、查询每门课程被选修的学生数 

SELECT

a.Cname

,COUNT(b.c)

FROM sc b,course a 

WHERE a.c =b.c

GROUP BY b.c

--27、查询出只有两门课程的全部学生的学号和姓名  

SELECT

,b.Sname

,a.countc

(SELECT

,COUNT(c) countc

FROM 

GROUP BY s

HAVING countc =2) a

,student b

WHERE

a.s=b.s

--28、查询男生、女生人数 

select s.Ssex,COUNT(*)from student s where s.Ssex=男

UNION

select s.Ssex,COUNT(*)from student s where s.Ssex=女

--29、查询名字中含有"风"字的学生信息

SELECT

,count(*)

FROM student 

WHERE

Sname rLIKE 风

--30、查询同名同性学生名单，并统计同名人数 

SELECT

s.Sname

,s.Ssex

,COUNT(*) countnum

student s

GROUP BY

s.Sname,s.Ssex

HAVING

countnum =2

--31、查询1990年出生的学生名单(注：Student表中Sage列的类型是datetime) 

SELECT

student

WHERE

Sage LIKE 1990%

--32、查询每门课程的平均成绩，结果按平均成绩降序排列，平均成绩相同时，按课程编号

SELECT

a.Cname

,AVG(sc.score) avgscore

FROM sc ,course a

WHERE sc.C =a.C

GROUP BY sc.C

ORDER BY avgscore DESC

--33、查询平均成绩大于等于85的所有学生的学号、姓名和平均成绩 

SELECT

(SELECT

a.Sname

,AVG(sc.score) avgscore

FROM sc ,student a

WHERE sc.s =a.s 

GROUP BY sc.s

ORDER BY avgscore DESC

WHERE

a.avgscore 85

--34、查询课程名称为"数学"，且分数低于60的学生姓名和分数 

SELECT

sc a,course b

WHERE 

a.c =b.c AND b.Cname=数学 AND a.score 60

--35、查询所有学生的课程及分数情况；

SELECT

student a

,course b

,sc c

WHERE

a.S=c.S AND b.C =c.C

--36、查询任何一门课程成绩在70分以上的姓名、课程名称和分数； 

SELECT

b.Sname

,c.Cname

,a.score

sc a, student b,course c

WHERE

a.score 70 AND a.C =c.C AND a.S =b.S

--37、查询不及格的课程

SELECT

b.Sname

,c.Cname

,a.score

sc a, student b,course c

WHERE

a.score 60 AND a.C =c.C AND a.S =b.S

--38、查询课程编号为01且课程成绩在80分以上的学生的学号和姓名； 

SELECT

,c.Sname

,a.Cname

,b.score

course a ,sc b ,student c

WHERE a.C =b.C AND b.score =80 AND c.S =b.S AND a.C=01

--39、求每门课程的学生人数 

SELECT

b.Cname

,COUNT(a.c)

sc a ,course b

WHERE

b.c=a.C

GROUP BY

a.C

--40、查询选修"张三"老师所授课程的学生中，成绩最高的学生信息及其成绩

SELECT

,MAX(c.score)

teacher a,student b ,sc c ,course d

WHERE

a.T =d.T AND d.C =c.C AND c.S =b.S AND a.Tname =张三

--41、查询不同课程成绩相同的学生的学生编号、课程编号、学生成绩 

SELECT c.* FROM sc c GROUP BY c.`C`,c.`score` HAVING COUNT(*) 

--42、查询每门功成绩最好的前两名 

SELECT

(SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=01AND a.score b.score)+1 mc

FROM sc b WHERE b.c=01 HAVING mc BETWEEN 1 AND 2

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=02AND a.score b.score)+1 mc

FROM sc b WHERE b.c=02 HAVING mc BETWEEN 1 AND 2

UNION ALL

SELECT b.s ,b.C ,b.score

,(SELECT COUNT(*) FROM sc a WHERE a.c=03AND a.score b.score)+1 mc

FROM sc b WHERE b.c=03 HAVING mc BETWEEN 1 AND 2

,student b

WHERE

a.s =b.s

--43、统计每门课程的学生选修人数（超过5人的课程才统计）。要求输出课程号和选修人数，查询结果按人数降序排列，若人数相同，按课程号升序排列  

SELECT

,b.Cname 

,COUNT(a.C) countc

sc a,course b

WHERE

a.c=b.C 

GROUP BY

HAVING countc 5

ORDER BY countc DESC

--44、检索至少选修两门课程的学生学号 

SELECT

,COUNT(sc.C) countc

GROUP BY sc.S

HAVING countc =2

--45、查询选修了全部课程的学生信息 

SELECT

,COUNT(sc.C) countc

sc ,student a

WHERE sc.S =a.S

GROUP BY sc.S

HAVING countc =3

--46、查询各学生的年龄

SELECT

 s.s,

 s.sname,

 EXTRACT(YEAR FROM NOW())-EXTRACT(YEAR FROM s.sage) 年龄

 student s

--47、查询本周过生日的学生

SELECT

,s.Sname

,s.Sage

FROM student s

WHERE YEARWEEK(DATE_FORMAT(s.Sage,%Y-%m-%d)) =YEARWEEK(NOW())

--48、查询下周过生日的学生

SELECT

,s.Sname

,s.Sage

FROM student s

WHERE YEARWEEK(DATE_FORMAT(s.Sage,%Y-%m-%d)) =YEARWEEK(NOW())+1

--49、查询本月过生日的学生

SELECT

,s.Sname

,s.Sage

FROM student s

WHERE MONTH(DATE_FORMAT(s.Sage,%Y-%m-%d)) =MONTH(NOW())

--50、查询下月过生日的学生

SELECT

,s.Sname

,s.Sage

FROM student s

WHERE MONTH(DATE_FORMAT(s.Sage,%Y-%m-%d)) =MONTH(NOW())+1

其中有三四个题做的不尽人意勉强实现需求
最强最全面的大数据SQL经典面试题（由31位大佬共同协作完成）（四） 本套SQL题的答案是由许多小伙伴共同贡献的，1+1的力量是远远大于2的，有不少题目都采用了非常巧妙的解法，也有不少题目有多种解法。本套大数据SQL题不仅题目丰富多样，答案更是精彩绝伦！
最强最全面的大数据SQL经典面试题（由31位大佬共同协作完成）（三） 本套SQL题的答案是由许多小伙伴共同贡献的，1+1的力量是远远大于2的，有不少题目都采用了非常巧妙的解法，也有不少题目有多种解法。本套大数据SQL题不仅题目丰富多样，答案更是精彩绝伦！
最强最全面的大数据SQL经典面试题（由31位大佬共同协作完成）（二） 本套SQL题的答案是由许多小伙伴共同贡献的，1+1的力量是远远大于2的，有不少题目都采用了非常巧妙的解法，也有不少题目有多种解法。本套大数据SQL题不仅题目丰富多样，答案更是精彩绝伦！
最强最全面的大数据SQL经典面试题（由31位大佬共同协作完成）（一） 本套SQL题的答案是由许多小伙伴共同贡献的，1+1的力量是远远大于2的，有不少题目都采用了非常巧妙的解法，也有不少题目有多种解法。本套大数据SQL题不仅题目丰富多样，答案更是精彩绝伦！
第十二届 BigData NoSQL Meetup — 基于hbase的New sql落地实践 立即下载