Mysql记录复制导入和导出_MySQL

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Mysql记录复制导入和导出

 

复制记录

lower  不区分大小写函数

password 加密函数

创建表employee

> create table employee (id int,name char(10),agi int,sex enum('M','F'),department char(10));

> insert into employee values (23,'john',27,'M','Engi'),(31,'Sue',31,'F','Fiance'),(113,'David',26,'M','Admin');

> select * from employee;

+------+-------+------+------+------------+

| id   | name  | agi  | sex  | department |

+------+-------+------+------+------------+

|   23 | john  |   27 | M    | Engi       | 

|   31 | Sue   |   31 | F    | Fiance     | 

|  113 | David |   26 | M    | Admin      | 

+------+-------+------+------+------------+

 

创建表user

> create table user (uid int primary key auto_increment,uname char(10),upass char(10));

 

复制记录

> insert into user (uname,upass) select lower(name),password(lower(name)) from employee;

> select * from user;

+-----+-------+------------+

| uid | uname | upass      |

+-----+-------+------------+

|   1 | john  | *DACDE7F57 | 

|   2 | sue   | *934B89788 | 

|   3 | david | *8201E0C1B | 

+-----+-------+------------+

 

复制记录时，可以添加where条件

> insert into user (uname,upass) select (name),password(name) from employee where department='Fiance';

> select * from user;

+-----+-------+------------+

| uid | uname | upass      |

+-----+-------+------------+

|   1 | john  | *DACDE7F57 | 

|   2 | sue   | *934B89788 | 

|   3 | david | *8201E0C1B | 

|   4 | Sue   | *287E48EAA | 

+-----+-------+------------+

-----------------------------------------------------------------------------------------------------------------------------------------------------

导入数据

load data infile...

 

语法：

 

load data infile '文件绝对路径' into table 表名 fields terminated by '字段分割符' lines terminated by '记录分割符';

 

样例：

 

> load data infile '/tmp/a.txt' into table t20 fields terminated by ':' lines terminated by '/n';

 

导出数据

select...into outfile...

 

语法：

 

select 字段 from 表名 into outfile '文件绝对路径' fields terminated by '字段分割服' lines terminated by '记录分割符'; 

 

样例：

 

> select * from t20 into outfile '/tmp/b.txt' fields terminated by ':' lines terminated by '/n';

 

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