创建测试表：

mysql> create table bigdata (id int,name char(2));

创建存储过程：

mysql> delimiter //

mysql> create procedure rand_data(in num int)

-> begin

-> declare str char(62) default 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; --总共62个字符。

-> declare str2 char(2);

-> declare i int default 0;

-> while i<num do

-> set str2=concat(substring(str,1+floor(rand()*61),1),substring(str,1+floor(rand()*61),1));

-> set i=i+1;

-> insert into bigdata values (floor(rand()*num),str2);

-> end while;

-> end;

-> //

Query OK, 0 rows affected (0.01 sec)

mysql> delimiter ;

插入一百万条数据：

mysql> call rand_data(1000000);

  Query OK, 1 row affected (1 hour 11 min 34.95 sec)

mysql> select * from bigdata limit 300,10;

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

| id     | name |

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

| 230085 | WR   |

| 184410 | 7n   |

| 540545 | nN   |

| 264578 | Tf   |

| 571507 | at   |

| 577023 | 0M   |

| 731172 | 7h   |

| 914168 | ph   |

| 391848 | h6   |

| 665301 | dj   |

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

10 rows in set (0.00 sec)