SQLServer數(shù)據(jù)庫的基本操作語句總結

這篇文章主要介紹“SQL Server數(shù)據(jù)庫的基本操作語句總結”，在日常操作中，相信很多人在SQL Server數(shù)據(jù)庫的基本操作語句總結問題上存在疑惑，小編查閱了各式資料，整理出簡單好用的操作方法，希望對大家解答”SQL Server數(shù)據(jù)庫的基本操作語句總結”的疑惑有所幫助！接下來，請跟著小編一起來學習吧！

在沙灣等地區(qū)，都構建了全面的區(qū)域性戰(zhàn)略布局，加強發(fā)展的系統(tǒng)性、市場前瞻性、產品創(chuàng)新能力，以專注、極致的服務理念，為客戶提供網(wǎng)站制作、成都網(wǎng)站設計 網(wǎng)站設計制作定制網(wǎng)站開發(fā),公司網(wǎng)站建設,企業(yè)網(wǎng)站建設,高端網(wǎng)站設計,營銷型網(wǎng)站,成都外貿網(wǎng)站建設公司,沙灣網(wǎng)站建設費用合理。

復制代碼 代碼如下: --sql基本操作

--創(chuàng)建數(shù)據(jù)庫

create database Studets

--創(chuàng)建表

create table student ( sno char(5), sname char(20), ssex char(2), sage smallint, sdept char(15) )

create table course ( cno char(3), cname char(30), cpno char(3), ccredit smallint )

create table sc ( sno char(5), cno char(3), grade int )

--查看表信息

select * from student select sno as 學號 from student select * from course select * from sc

--修改表

--插入列

alter table student add scome datetime

--修改列的字段類型 alter table student alter column scome char(50)

--刪除 --刪除列

alter table student drop column scome

--刪除表 drop table student drop table course drop table sc

--完整性約束實現(xiàn)

--sno 非空唯一，ssex檢查約束， sage默認大小

create table student ( sno char(5) not null unique, sname char(20), sex char(2), sage smallint default 20, sdept char(15), constraint sex check(sex in('男','女')), )

--刪除表的約束 alter table student drop constraint ssex

--添加字段約束 alter table student add constraint ssex check(sex in('男','女'))

--添加主鍵約束 alter table student add constraint PK_SNO primary key(sno) create table course ( cno char(3) not null unique, cname char(30), cpno char(3), ccredit smallint )

--關聯(lián)表主鍵已經存在，可以如下操作添加主鍵和外鍵約束

alter table course add constraint PK_CNO primary key(cno), constraint FK_CPNO foreign key(cpno) REFERENCES sc(cno)

create table sc

(

sno char(5) foreign key references student(sno),

cno char(3) foreign key references course(cno),

grade int,

constraint PK_SC primary key(sno,cno)

)

ALTER TABLE [dbo].[sc] DROP CONSTRAINT [FK__sc__sno__0F975522]

ALTER TABLE [dbo].[sc] DROP CONSTRAINT [PK_SC]

ALTER TABLE [dbo].[sc] DROP CONSTRAINT [PK_SC]

--創(chuàng)建sc后，通過如下修改主外鍵

alter table sc add constraint PK_SC primary key(sno,cno),

constraint FK_SNO foreign key(sno) references student(sno),

constraint FK_CNO foreign key(cno) references course(cno)

--創(chuàng)建索引。

分為聚簇索引（clustered物理順序）和非聚簇索引（nonclustered邏輯順序，可多個）

復制代碼 代碼如下:

--not null約束字段時候。會創(chuàng)建一個系統(tǒng)內置的約束鍵值，并且這種非空判斷，通過索引查詢實現(xiàn) --的，索引默認創(chuàng)建一個系統(tǒng)索引

create unique index STUsno

on student(sno)

create unique index COUcno

on course(cno)

create unique index SCno

on sc(sno asc,cno desc)

drop index SCno on sc

--顯示表的數(shù)據(jù)和索引的碎塊信息 DBCC SHOWCONTIG

--插入數(shù)據(jù) select * from student

alter table student alter column sno char(10)

insert into student values('10021','張三','男',20,'計科系')

insert into student values('10022','王朝','女',18,'軟件')

insert into student values('10023','朱元璋','男',20,'管理')

insert into student values('10024','劉徹','男',18,'軍事')

insert into student values('10025','劉表','男',20,'商學系')

insert into student values('10026','白居易','男',19,'文法')

insert into student values('10027','李清照','女',24,'文法')

select * from course insert into course values('001','數(shù)據(jù)庫','005',4)

insert into course values('002','高等數(shù)學','',2)

insert into course values('003','信息系統(tǒng)','001',4)

insert into course values('004','操作系統(tǒng)','006',2)

insert into course values('005','數(shù)據(jù)結構','007',3)

insert into course values('006','數(shù)據(jù)處理','',2)

insert into course values('007','C語言','006',5)

select * from sc insert into sc values('10021','002',100)

insert into sc values('10021','001',88)

insert into sc values('10021','006',100)

insert into sc values('10021','007',68)

insert into sc values('10022','002',100)

insert into sc values('10023','005',30)

insert into sc values('10024','002',100)

insert into sc values('10024','006',56)

select * from student --查詢操作

--查詢 select * from student select * from course select * from sc

--去掉重復行 select distinct sno from sc

--格式化查詢

select sname as '姓名',2013-sage as '出生日期' from student

select sname,'出生日期',2013-sage from student

select 姓名=sname,出生日期=2013-sage from student

--條件查詢

select * from course where ccredit>3

select * from course where ccredit between 2 and 5

select * from course where ccredit> 2 and ccredit<5

select * from course where ccredit in(2)

select * from course where ccredit not in(2)

--匹配查詢

select * from student where sname like '劉__'

select * from student where sname like '_表__'

select * from student where sname like '%表%'

--算術元算查詢

select grade*(1+0.2) as 總成績,grade/(10) as 績點 from sc

--分組函數(shù)查詢

select COUNT(*) as 總人數(shù) from student

select COUNT(distinct sno) as '選修的總人數(shù)' from sc

select AVG(grade) as '平均成績' from sc where sno='10021'

select MAX(grade) as 'MAX成績' from sc where sno='10021'

select MIN(grade) as 'MIN成績' from sc where sno='10021'

select SUM(grade) as '總成績' from sc where sno='10021'

select SUM(grade)/COUNT(grade) as '平均成績' from sc where sno='10021'

select SUM(grade) as '總成績' from sc group by sno having sum(grade)>100 -

-連接查詢、

--等值連接

select distinct student.*,sc.* from student,sc where student.sno=sc.sno

--自身連接

select distinct A.*,B.* from student A,sc B where A.sno=B.sno

select B.sname as '同一個系' from student A,student B where A.sname='白居易' and A.sdept=B.sdept

--外連接

select A.*,B.* from student A left join sc B on A.sno=B.sno

select A.*,B.* from student A right join sc B on A.sno=B.sno

select A.*,B.* from student A FULL join sc B on A.sno=B.sno

--復合條件連接

select * from sc select * from course

select distinct A.*,B.* from student A,sc B where A.sno=B.sno and B.grade>99 and B.cno='002'

select distinct A.*,B.*,C.* from student A,sc B,course C where A.sno=B.sno and B.cno=C.cno and B.grade>99 and B.cno='002'

--字符串連接查詢

select sname+sno from student

select distinct sname from student ,sc where student.sno=sc.sno

select sname from student ,sc where student.sno=sc.sno and student.sno not in (select sno from sc where grade<60) group by sname

--子查詢

select * from student where sage>(select AVG(sage) from student)

--是否存在的查詢

select * from student where exists(select * from sc where sno=student.sno)

select * from student where not exists(select * from sc where sno=student.sno)

--sql創(chuàng)建用戶 sys.sp_addlogin bnc,bnc,Studets sp_adduser bnc,bnc

--權限分配和收回

grant select on student to bnc

select * from student

revoke select on student from bnc

--視圖的創(chuàng)建

create view VIEW_STUGrade(學號,姓名,課程,成績)

as

select student.sno,student.sname,course.cname,sc.grade from student,course,sc

where student.sno=sc.sno and course.cno=sc.cno and student.sdept='軟件'

--查看視圖

select * from VIEW_STUGrade

--視圖修改

alter view VIEW_STUGrade(學號,姓名,課程,成績)

as

select student.sno,student.sname,course.cname,sc.grade from student,course,sc

where student.sno=sc.sno and course.cno=sc.cno and student.sdept='軟件'

with check option

--更新失敗后不影響視圖查看

--視圖更新

update VIEW_STUGrade set 姓名='王超' where 學號='10022' select * from student where sno='10022'

/* 1,可更新視圖： a,單個基本表導出的 2，不可更新視圖 a 兩個以上基本表導出的 b 視圖字段來自表達式或者函數(shù) c 嵌套查詢的表 d 分組子句使用distinct */

--刪除視圖 drop view VIEW_STUGrade

--高級sql編程

--數(shù)據(jù)類型1,int 2,smallint 3,tinyint (0--255) 4,bigint 5char固定長度<800.如：學號，姓名 6，varchar可變長度小于800 7,text 2GB 8，nvarchar1--4000 */

--運算符和通配符

select GETDATE()-1 昨天,GETDATE() 今天,GETDATE()+1 明天

select 59&12

select 59|12

select 59^12

--模糊查詢

select * from student where sname like '%劉%'

select * from student where sno like '1002[5-9]'

--控制流程語句

declare @name char(10) set @name='司馬相如'

print @name

--輸出一個表達式，不能進行查詢 select @name

--輸出多個表達式

declare @a nvarchar(50),@b nvarchar(50)

set @a=33 set @b=34 ---簡寫select@a=33，@b=34

if @a>@b

print '最小值是：'+@a

else

print '最大值是：'+@b

--waitfor間隔一段時間執(zhí)行

waitfor delay '00:00:04' print '推遲4秒執(zhí)行'

waitfor time '17:45:50' print '等待這一時刻執(zhí)行'

--創(chuàng)建函數(shù)

CREATE FUNCTION GetTime ( @date1 datetime, @date2 datetime )

RETURNS TABLE

AS RETURN (

select datediff(dd,@date1,@date2) 日差,datediff(mm,@date1,@date2) 月差, datediff(yy,@date1,@date2) 年差

)

--創(chuàng)建存儲過程，

--查看

GO create proc [dbo].[sel] (

@sno char(10)

)

as

select * from student where sno=@sno

exec sel @sno='10021'

--查看

GO create proc sel2

as

select * from student

exec sel2

--修改

GO create proc updat @sno char(10), @sex char(2)

as

update student set sex=@sex where sno=@sno

select * from student exec updat @sno='10021', @sex='女'

--刪除

GO create proc dele @sno char(10)

as

delete student where sno=@sno

select * from student

exec dele @sno='10029'

--插入

GO create proc inser @sno char(10), @sname char(20), @sex char(2), @sage smallint, @sdept char(15)

as

insert into student values(@sno,@sname,@sex,@sage,@sdept)

exec inser @sno='10029', @sname='tom', @sex='男', @sage=100, @sdept='sc' select * from student

--查詢操作

--查詢

select * from student select * from course select * from sc

--去掉重復行 select distinct sno from sc

--格式化查詢

select sname as '姓名',2013-sage as '出生日期' from student

select sname,'出生日期',2013-sage from student

select 姓名=sname,出生日期=2013-sage from student

--條件查詢

select * from course where ccredit>3

select * from course where ccredit between 2 and 5

select * from course where ccredit> 2 and ccredit<5

select * from course where ccredit in(2)

select * from course where ccredit not in(2)

--匹配查詢

select * from student where sname like '劉__'

select * from student where sname like '_表__'

select * from student where sname like '%表%'

--算術元算查詢

select grade*(1+0.2) as 總成績,grade/(10) as 績點 from sc

--分組函數(shù)查詢

select COUNT(*) as 總人數(shù) from student

select COUNT(distinct sno) as '選修的總人數(shù)' from sc select AVG(grade) as '平均成績' from sc where sno='10021'

select MAX(grade) as 'MAX成績' from sc where sno='10021'

select MIN(grade) as 'MIN成績' from sc where sno='10021'

select SUM(grade) as '總成績' from sc where sno='10021'

select SUM(grade)/COUNT(grade) as '平均成績' from sc where sno='10021'

select SUM(grade) as '總成績' from sc group by sno having sum(grade)>100

--連接查詢、 --等值連接

select distinct student.*,sc.* from student,sc where student.sno=sc.sno

--自身連接

select distinct A.*,B.* from student A,sc B where A.sno=B.sno select B.sname as '同一個系' from student A,student B where A.sname='白居易' and A.sdept=B.sdept

--外連接

select A.*,B.* from student A left join sc B on A.sno=B.sno select A.*,B.* from student A right join sc B on A.sno=B.sno

select A.*,B.* from student A FULL join sc B on A.sno=B.sno

-復合條件連接

select distinct A.*,B.* from student A,sc B where A.sno=B.sno and B.grade>99 and B.cno='002'

select distinct A.*,B.*,C.* from student A,sc B,course C where A.sno=B.sno and B.cno=C.cno and B.grade>99 and B.cno='002'

--字符串連接查詢

select sname+sno from student

select distinct sname from student ,sc where student.sno=sc.sno

select sname from student ,sc where student.sno=sc.sno and student.sno not in (select sno from sc where grade<60) group by sname

--子查詢

select * from student where sage>(select AVG(sage) from student)

--是否存在的查詢

select * from student where exists(select * from sc where sno=student.sno)

select * from student where not exists(select * from sc where sno=student.sno)

--sql創(chuàng)建用戶

sys.sp_addlogin bnc,bnc,Studets sp_adduser bnc,bnc

--權限分配和收回

grant select on student to bnc

select * from student

revoke select on student from bnc

--視圖的創(chuàng)建

create view VIEW_STUGrade(學號,姓名,課程,成績)

as

select student.sno,student.sname,course.cname,sc.grade from student,course,sc

where student.sno=sc.sno and course.cno=sc.cno and student.sdept='軟件'

--查看視圖

select * from VIEW_STUGrade

--視圖修改

alter view VIEW_STUGrade(學號,姓名,課程,成績) as select student.sno,student.sname,course.cname,sc.grade from student,course,sc

where student.sno=sc.sno and course.cno=sc.cno and student.sdept='軟件'

with check option

--更新失敗后不影響視圖查看 --視圖更新

update VIEW_STUGrade set 姓名='王超' where 學號='10022' select * from student where sno='10022'

/* 1,可更新視圖： a,單個基本表導出的 2，不可更新視圖 a 兩個以上基本表導出的 b 視圖字段來自表達式或者函數(shù) c 嵌套查詢的表 d 分組子句使用distinct */

--刪除視圖 drop view VIEW_STUGrade

--觸發(fā)器

use Studets

GO create trigger insert_Tri

ON student after

insert as print '有新數(shù)據(jù)插入！'

GO create trigger update_Tri

on student after

update as print '有數(shù)據(jù)更新！'

GO create trigger delete_Tri

on student after

delete as print '有數(shù)據(jù)刪除！'

--修改觸發(fā)器

GO alter trigger delete_Tri

on student after delete

as

if '王帥' in (select sname from deleted)

print '該信息不許刪除！'

rollback transaction

--執(zhí)行存儲過程查看觸發(fā)器使用情況

exec sel @sno='10021'

exec inser @sno='10029', @sname='王帥', @sex='男', @sage=25, @sdept='國貿'

exec updat @sno='10029', @sex='女'

exec dele @sno='10029'

--查看,修改,刪除觸發(fā)器

/* sp_*+觸發(fā)器名稱

sp_helptext：觸發(fā)器正文信息 sp_help:查看一般信息，觸發(fā)器名稱，屬性，創(chuàng)建時間，類型 sp_depends：引用或指定表的所有觸發(fā)器 sp_helptrigger：指定信息 */ sp_help delete_Tri

sp_helptext delete_Tri

sp_depends delete_Tri

sp_helptrigger student

--刪除觸發(fā)器

drop trigger delete_Tri

到此，關于“SQL Server數(shù)據(jù)庫的基本操作語句總結”的學習就結束了，希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習，快去試試吧！若想繼續(xù)學習更多相關知識，請繼續(xù)關注創(chuàng)新互聯(lián)網(wǎng)站，小編會繼續(xù)努力為大家?guī)砀鄬嵱玫奈恼拢?/p>

新聞標題：SQLServer數(shù)據(jù)庫的基本操作語句總結
網(wǎng)站地址：http://bm7419.com/article22/jjccjc.html

成都網(wǎng)站建設公司_創(chuàng)新互聯(lián)，為您提供網(wǎng)站營銷、標簽優(yōu)化、用戶體驗、外貿建站、外貿網(wǎng)站建設、網(wǎng)站設計公司

廣告

聲明：本網(wǎng)站發(fā)布的內容（圖片、視頻和文字）以用戶投稿、用戶轉載內容為主，如果涉及侵權請盡快告知，我們將會在第一時間刪除。文章觀點不代表本網(wǎng)站立場，如需處理請聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內容未經允許不得轉載，或轉載時需注明來源： 創(chuàng)新互聯(lián)