mysql sql语句优化案例 依靠主要性能指标来判断

#查看profiling结果
| starting             | 0.020203 |
| checking permissions | 0.000026 |
| Opening tables       | 0.000036 |
| init                 | 0.000099 |
| System lock          | 0.000092 |
| optimizing           | 0.000038 |
| statistics           | 0.000123 |
| preparing            | 0.000043 |
| Sorting result       | 0.000025 |
| executing            | 0.000023 |
| Sending data         | 0.000045 |
| Creating sort index  | 0.941434 |

1.一次SQL优化过程中的分析过程 http://wangleide414.iteye.com/blog/2265843 2.discuz!热帖翻页优化

3.分页优化 http://imysql.com/2014/07/26/mysql-optimization-case-paging-optimize.shtml[/code]