CREATE TABLE TJN(NAME VARCHAR2(400),SEX VARCHAR2(400),CLASSMATE VARCHAR2(400));
delete DA where ID=1
select ID,NAME,SEX from DA where ID=1
select * from DA
insert into DA values(4,‘贤’,0);
update DA set name=‘姜’ where ID=1
//删除语句
1.delect DA where name=‘小丑’
2.delete DA//删除所有的
3.delete DA where id=1
4.delete DA where sex=0
//插入语句
insert into DA (ID,NAME,SEX) VALUES(1,‘艾米’,0)
insert into DA (ID,NAME) VALUES(2,‘愚昧’)
insert into DA(ID,SEX) VALUES(3,‘虚荣’)
insert into DA(NAME,SEX) VALUES(‘愚蠢’,1)
//修改语句
update DA set NAME=‘挫折’,SEX=0 where ID=1
update DA set ID=2,SEX=0 where NAME=’’
update DA set NAME=‘挫折’,SEX=0 where ID=1
delete from DA where ID=1