思考一个这样的问题，我们需要统计门户网站的session信息
| id1 | user_name | access_time | source_ip | retention_time | access_details |
| id2 | user_name | access_time | source_ip | retention_time | access_details |
| id3 | user_name | access_time | source_ip | retention_time | access_details |
| |
原文：https://www.cnblogs.com/ilifeilong/p/9061615.html