MySQL的常見操作在這裡先做一下總結，已經整合到代碼裡面，經過檢驗無誤。
復制代碼 代碼如下:
/*創建一個數據庫*/
create database xuning_test;
/*說明當時使用數據庫對象*/
use xuning_test;
/*向數據庫中添加表並且定義表的結構*/
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
);
/*向數據庫的表中插入數據*/
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')
;
/*查詢時否成功插入*/
select * from person;
/*下面是多種查詢方式*/
/*根據列的名稱屬性值*/
select name from person;
/*添加條件-根據性別*/
select name from person where sex = 'men';
/*也可以用比較符作為條件--一定逗號隔開*/
select name,address from person where age > 50;
/*看做對象去使用數據庫和表的關系=---雙表關聯--對象關系一定要明確*/
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
;
/*使用表的別名進行查詢*/
use xuning_test;
select c.name,sex from person as c where c.age > 40 and c.address='beijing';
