目录不推荐使用子查询和JOIN的原因解决方案优化案例案例1:查询所有有库存的商品信息案例2:使用EXISTS优化子查询案例3:使用JOIN代替子查询案例4:优化子查询以减少数据量案例5:使用索引覆盖案例6:使用临时表优化
I have a Linux box and I want to be able to telnet into it (port 77557) and run few required commands without having to access to the whole Linux box. So, I have a server listening on that port, and e