想测试自己的查询语句，导入批量的数据，一开始很慢以为是自己的语句有问题，后来是这个autocommit,效率相差好多好多。。。。。。。。。。。。
delimiter // create procedure new(in num int) begin declare i int; set i=0; while i<num do
insert into new values (i,"name"); set i=i+1; end while; end // delimiter ;
没建索引，测试
mysql> select * from new where name='haha'; +-----------+------+ | id | name | +-----------+------+ | 100000000 | haha | +-----------+------+ 1 row in set (0.13 sec)
mysql> select * from new where id=100000000; +-----------+------+ | id | name | +-----------+------+ | 100000000 | haha | +-----------+------+ 1 row in set (0.00 sec)
mysql> select * from new where name='haha'; +-----------+------+ | id | name | +-----------+------+ | 100000000 | haha | +-----------+------+ 1 row in set (0.09 sec)
同样的数据查询整形和字符相差好大啊
切记以后多查整形。。。。。