激扬飞雪

摘要： 常规索引： 在常用查询的字段上使用常规索引 创建表时一块创建索引 create table if not exists carshop(id int not null auto_increment, uid int not null, gid int not null, primay key(id), index cuid(uid), key cgid(gid)); create table if not exists carshop(id int not null auto_increment, uid int not null, gid int not null, prima... 阅读全文