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11£®´ò¿ªÓαêµÄÓï¾äÊÇ_____¡£ OPEN cursor_name

12£®ÔÚ²Ù×÷Óαêʱ£¬ÅжÏÊý¾ÝÌáȡ״̬µÄÈ«¾Ö±äÁ¿_____¡£ @@fetch_status ËÄ£®ÉÏ»úÁ·Ï°

ÒÔϸ÷Ìâ¾ùÀûÓõÚ3¡¢4Õ½¨Á¢µÄStudentsÊý¾Ý¿âÒÔ¼°Student¡¢CourseºÍSC±íʵÏÖ¡£ 1£® ´´½¨Âú×ãÏÂÊöÒªÇóµÄ´æ´¢¹ý³Ì£¬²¢²é¿´´æ´¢¹ý³ÌµÄÖ´Ðнá¹û¡£ £¨1£© ²éѯÿ¸öѧÉúµÄÐÞ¿Î×Üѧ·Ö£¬ÒªÇóÁгöѧÉúѧºÅ¼°×Üѧ·Ö¡£

create proc p1 as

select sno,SUM(credit) as ×Üѧ·Ö

from SC join Course c on c.Cno=SC.Cno group by sno

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Ö´Ðд˴洢¹ý³Ì£¬²¢·Ö±ðÖ¸¶¨Ò»Ð©²»Í¬µÄÊäÈë²ÎÊýÖµ£¬²é¿´Ö´Ðнá¹û¡£ create proc p2

@dept varchar(20) = '¼ÆËã»úϵ' as

select s.sno,sname,c.cno,cname,credit from Student s join SC on s.Sno=SC.Sno join Course c on c.Cno=SC.Cno

where Sdept = @dept Ö´ÐÐʾÀý1£ºEXEC P2

Ö´ÐÐʾÀý2£ºEXEC P2 'ͨÐŹ¤³Ìϵ'

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create proc p3

@dept varchar(20),@rs int output as

select @rs = COUNT(*) from Student where Sdept = @dept and Ssex = 'ÄÐ' £¨4£© ɾ³ýÖ¸¶¨Ñ§ÉúµÄÐ޿μǼ£¬ÆäÖÐѧºÅΪÊäÈë²ÎÊý¡£

create proc p4 @sno char(7)

as

delete from SC where Sno = @sno

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create proc p5

@cno char(6),@x tinyint as

update Course set Semester = @x where Cno = @cno

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create trigger tri1

on student after insert,update as

if exists(select * from inserted where sage not between 15 and 45) rollback

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create trigger tri2

on student after insert,update as

if exists(select * from student where sdept not in ('¼ÆËã»úϵ','ÐÅÏ¢¹ÜÀíϵ','Êýѧϵ','ͨÐŹ¤³Ìϵ'))

Rollback

£¨3£© ÏÞÖÆÃ¿¸öѧÆÚ¿ªÉèµÄ¿Î³Ì×Üѧ·ÖÔÚ20~30·¶Î§ÄÚ¡£

create trigger tri3

on course after insert,update as

if exists(select sum(credit) from course

where semester in (select semester from inserted ) having sum(credit) not between 20 and 30 ) Rollback

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create trigger tri4 on sc after insert as

if exists(select * from sc join course c on sc.cno = c.cno where sno in (select sno from inserted) group by sno,semester having count(*) > 6 ) rollback

3£® ´´½¨Âú×ãÏÂÊöÒªÇóµÄÓα꣬²¢²é¿´ÓαêµÄÖ´Ðнá¹û¡£

£¨1£© ÁгöVB¿¼ÊԳɼ¨×î¸ßµÄǰ2ÃûºÍ×îºó1ÃûѧÉúµÄѧºÅ¡¢ÐÕÃû¡¢ËùÔÚϵºÍVB³É¼¨¡£

declare @sno char(10),@sname char(10),@dept char(14),@grade char(4) declare c1 SCROLL cursor for select s.sno,sname,sdept,grade

from student s join sc on s.sno = sc.sno join course c on c.cno = sc.cno

where cname = 'vb' order by grade desc open c1

print ' ѧºÅ ÐÕÃû ËùÔÚϵ VB³É¼¨'

print '---------------------------------------' fetch next from c1 into @sno ,@sname ,@dept ,@grade if @@FETCH_STATUS = 0

print @sno + @sname + @dept + @grade

fetch next from c1 into @sno ,@sname ,@dept ,@grade if @@FETCH_STATUS = 0

print @sno + @sname + @dept + @grade

fetch last from c1 into @sno ,@sname ,@dept ,@grade if @@FETCH_STATUS = 0

print @sno + @sname + @dept + @grade close c1 deallocate c1

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declare @sname char(10),@age char(4),@dept char(20) declare c1 cursor for select distinct sdept from student open c1

fetch next from c1 into @dept while @@FETCH_STATUS = 0 begin

print @dept

declare c2 cursor for

select top 2 with ties sname,sage from student where sdept = @dept order by sage desc open c2

fetch next from c2 into @sname ,@age if @@FETCH_STATUS = 0 print @sname + @age fetch next from c2 into @sname ,@age if @@FETCH_STATUS = 0 print @sname + @age print '' close c2 deallocate c2

fetch next from c1 into @dept end close c1 deallocate c1 µÚ10Õ °²È«¹ÜÀí Ò»£®Ñ¡ÔñÌâ

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