SQLite，Python3

Question

我对SQLite有问题。我有一个包含5个表的数据库。

表1：扫描列：scan_id和scandate

表2：系统列：system_id，ip，dns ..

表3：端口列：port_id，协议，端口，服务

表4：插件列：plugin_id，PluginName，描述

表5：地图列：map_id，scan_id，system_id，port_id，plugin_id

因此，一个系统可以具有多个端口，而一个端口可以具有一对多注册的插件。现在，我想了解以下内容：最后扫描日

`system_IP, protocol, port, service and all plugins identified on that systems port` 

此刻，我被此命令卡住：

`SELECT system_IP, protocol, port, service, PluginName FROM maps
 INNER JOIN scans ON (maps.scan_id = scans.scan_id)
 INNER JOIN systems ON (maps.system_id = systems.system_id)
 INNER JOIN ports ON (maps.ports_id = ports.ports_id)
 INNER JOIN plugins ON (maps.plugin_id = plugins.plugin_id)
 WHERE scan_id=1`

结果是：

`123.456.789.1, TCP, 22, SSH, Plugin1
 123.456.789.1, TCP, 80, HTTP, Plugin2
 123.456.789.1, TCP, 80, HTTP, Plugin3`

我想要的是以下内容：

`123.456.789.1, TCP, 22, SSH, Plugin1
 123.456.789.1, TCP, 80, HTTP, Plugin2, Plugin3, Plugin4
 123.456.789.1, TCP, 443, SSH, Plugin3`

我该怎么做？

Answer 1

现在，我想获取以下信息：在最后扫描日

这表明类似：

SELECT system_IP, protocol, p.port, service, pl.PluginName
FROM (SELECT s.*
      FROM scans s
      ORDER BY scandate DESC
      LIMIT 1
     ) s JOIN
     maps m
     ON m.scan_id = s.scan_id JOIN
     systems sy
     ON m.system_id = sy.system_id JOIN
     ports p
     ON m.ports_id = p.ports_id JOIN
     plugins pl
     ON m.plugin_id = pl.plugin_id;