我有一张包含公共汽车旅行的表
id busid pickup destination
1 1 NWD KML
2 2 KML ORL
3 2 ORL ULI
4 3 ULI OIL
5 4 YUT CDN
6 5 CDN UYT
我试图找到的是当用户选择拾取NWD和目标OIL时。 输出将是
1: Take bus 1 going from NWD to KML
2: Take bus 2 going from KML to ORL
3: Take bus 2 going from ORL to ULI
4: Take bus 3 going from ULI to OIL
或者如果用户选择提取NWD和目的地ULI
1: Take bus 1 going from NWD to KML
2: Take bus 2 going from KML to ORL
3: Take bus 2 going from ORL to ULI
如果用户选择提取YUT和目的地UYT
1: Take bus 4 going from YUT to CDN
2: Take bus 5 going from CDN to UYT
所以问题是我无法将所有列表附加到用户在取件和目的地上选择的内容。我怎么能得到那些？