MySql常用操作SQL语句汇总

MySQL的常见操作在这里先做一下总结，已经整合到代码里面，经过检验无误。
复制代码
代码如下:
/*创建一个数据库*/
create
database
xuning_test;
/*说明当时使用数据库对象*/
use
xuning_test;
/*向数据库中添加表并且定义表的结构*/
create
table
person(
id
int
not
null,
name
varchar(16)
not
null,
sex
varchar(16)
not
null,
age
int
not
null,
address
varchar(128)
not
null,
remark
varchar(512)
not
null
);
/*向数据库的表中插入数据*/
insert
into
person
value
(1,'name_1','men',99,'beijing','This
is
a
frindsheep
boy'),
(2,'name_2','men',88,'shanghai','ok
great'),
(1,'name_3','man',77,'guangzhou','This
is
lickly'),
(1,'name_4','men',66,'beijing','This
is
a
frindsheep
boy'),
(1,'name_5','men',55,'beijing','you
dont
going
to
shool'),
(1,'name_6','man',44,'beijing','This
is
a
frindsheep
boy'),
(1,'name_7','men',33,'beijing','This
is
a
frindsheep
boy'),
(1,'name_8','man',22,'beijing',''),
(1,'name_9','men',11,'beijing','This
is
a
frindsheep
boy')
;
/*查询时否成功插入*/
select
*
from
person;
/*下面是多种查询方式*/
/*根据列的名称属性值*/
select
name
from
person;
/*添加条件-根据性别*/
select
name
from
person
where
sex
=
'men';
/*也可以用比较符作为条件--一定逗号隔开*/
select
name,address
from
person
where
age
>
50;
/*看做对象去使用数据库和表的关系=---双表关联--对象关系一定要明确*/
select
xuning_test.person.name,
xuning_test.person.id,
xuning_test.person.age,
xuning_test.person.address
from
xuning_test.person,
test1.test_xuning
where
xuning_test.person.id
=
test1.test_xuning.id
;
/*使用表的别名进行查询*/
use
xuning_test;
select
c.name,sex
from
person
as
c
where
c.age
>
40
and
c.address='beijing';