1、建表

create table student (
? id number(10,0) not null,
? uname varchar2(255 char),
? pword varchar2(255 char),
? primary key (id)
);

2、插入

insert into student values(1,'張三','qweerwe');
insert into student values(2,'李四','asdff');
insert into student values(4,'王五7','ry123');

insert into USERINFODZ(USERNAME,USERPWD,age) values('Z自己56','322',56);

3、查詢

全部查詢

select * from student;

條件查詢

(select * from USERINFODZ where age>15)

4、增加列、刪除列

alter table USERINFODZ add agee number(10,0)

alter table USERINFODZ drop column agee?

5、查詢 like語句

select * from USERINFODZ where username LIKE ?'%圍%'

只有包含“圍”

select * from USERINFODZ where username LIKE ?'圍%'

開頭是“圍”

select * from USERINFODZ where username LIKE ?'%圍'

結束是“圍”

6、修改語句

update student set uname='薩拉赫' where uname = '內馬爾'

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?

?

?

?

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附：

總數：select count * as totalcount from table1

oracle查詢總數：select count(*) from student;
　　求和：select sum(field1) as sumvalue from table1
　　平均：select avg(field1) as avgvalue from table1
　　最大：select max(field1) as maxvalue from table1
　　最小：select min(field1) as minvalue from table1

?

總結

以上是生活随笔為你收集整理的SQL语句：建表语句、插入语句、查询语句、增加列、删除列、查询语句like、修改语句的全部內容，希望文章能夠幫你解決所遇到的問題。

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