我有一张有100张车记录的牌桌。我正在创建一个表单,其中选择的下拉列表选项将它们分为4或5辆汽车的组(由下拉列表选择选择),然后根据他们的年份降序和制作。在此之后,组将需要具有组ID(例如NIS01)。前3个字母是汽车的品牌,数字也是分配给它的组。
您如何为每个组排序和分配组ID?最好是ORDER BY还是GROUP BY然后创建一个函数来分配这个id?
我感谢任何帮助。提前致谢
编辑 - 抱歉应该在开头发布
创建TABLE汽车 ( CarID int(10), make varchar(255), 模型varchar(255), 年varchar(4), EngineSize varchar(8), );
示例数据
CarID , Make , Model , Year , EngineSize
16528454, Toyota, Prius, 2007 1.8
45619810, Toyota, AE-86, 2012, 2.0
32541811, Nissan, Skyline, 2008, 3.0
25856181, Mitsubishi, Nimbus, 2000, 2.4
29519815, Toyota, Celica, 2007, 1.8
16916598, Holden, Barina, 2011, 1.6
65619818, Mitsubishi, Evolution, 2008, 2.4
15616518, Holden, Commoodore, 2011, 6.0
组数据(基于4组)
GroupID , Make , Model , Year , EngineSize
TOY101, Toyota, Prius, 2013, 1.8
TOY101, Toyota, AE-86, 2013, 2.0
TOY101, Toyota, Celica, 2013, 1.8
TOY101, Toyota, Prius, 2012, 1.8
TOY102, Toyota, AE-86, 2012, 2.0
TOY102, Toyota, Celica, 2012, 1.8
NIS201, Nissan, Skyline, 2013, 3.0
NIS201, Nissan, Skyline, 2013, 3.0
NIS201, Nissan, Silvia, 2013, 2.0
NIS201, Nissan, Skyline, 2013, 3.0
NIS202, Nissan, Pulsar, 2013, 2.0
NIS202, Nissan, Skyline, 2012, 3.0
NIS202, Nissan, Pulsar, 2009, 2.0
NIS202, Nissan, Skyline, 2008, 3.0
MIT301, Mitsubishi, Nimbus, 2012, 2.4
MIT301, Mitsubishi, Evolution, 2013, 2.4
MIT301, Mitsubishi, Nimbus, 2012, 2.4
MIT301, Mitsubishi, Evolution, 2008, 2.4
HOL401, Holden, Barina, 2013, 1.6
HOL401, Holden, Commoodore, 2012, 6.0
HOL401, Holden, Barina, 2011, 1.6
HOL401, Holden, Commoodore, 2011, 6.0
HOL402, Holden, Barina, 2010, 1.6
HOL402, Holden, Commoodore, 2007, 6.0