SQL第九章資料查詢基礎上機題1 4

2021-07-24 19:41:56 字數 2150 閱讀 5843

//查詢學生相關基本資訊


select * from student where gradeid=1


select studentname,phone from student  where gradeid=2


select studentname+phone from student  where gradeid=2


select * from student where gradeid=1 and ***='女'


select subjectname from subject where classhour>60


//查詢學生相關複雜資訊


select subjectname from subject where gradeid=1


select studentname,[address] from student where gradeid=2 and ***='男'


select studentname,gradeid from student where email is null


select studentname from student where gradeid=2 and borndate>1990


select studentresult from result where examdate='2013-2-15' and subjectid=1


//使用排序查詢學生相關資訊


select * from student where gradeid=1 order by borndate


select * from result where subjectid=1 order by examdate,studentresult desc


select top 5 studentresult from result where subjectid=8 and examdate='2013-3-22' order by studentresult desc


select top 1 subjectname from subject where  gradeid=3 order by classhour desc


select top 1 gradeid,studentname from student  order by borndate desc


select top 1 subjectid from result where examdate='2013-3-22' order by studentresult


select * from result where studentno='s1101003' order by examdate


select top 1 studentresult  ,subjectid,examdate from result where studentno='s1101003' order by studentresult desc


//使用函式查詢學生相關資訊


elect * from student where gradeid=2 and datediff(yy,borndate,'11/22/2016')>20


select * from student where datename(mm,borndate)=1


select gradeid ,studentname from student where convert(varchar(2),datepart(mm,getdate()))+convert(varchar(2),datepart(dd,getdate()))= convert(varchar(2),datepart(mm,borndate))+convert(varchar(2),datepart(dd,borndate))


select right(email,(len(email)-charindex('@',email,1)))as email網域名稱 from student where studentno='y21003012' 


select top 1 's1'+convert(varchar(4),datepart(yyyy,getdate()))+convert(varchar(2),datepart(mm,getdate()))+convert(varchar(2),datepart(dd,getdate()))+right(rand(),4)+'@jbit.com' as 郵件位址  from student

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