每个用户我有两个表,并想通过查询最新的日期数据过滤器,可以尝试使用功能最多,但不知道如何使用它在两个表选择最大的日期记录为来自多个表
+-----------+-------------+-------------------+------+
| member id | member name | internet provider | date |
+-----------+-------------+-------------------+------+
| 1 | Sam | c | 2014 |
+-----------+-------------+-------------------+------+
| 2 | johnny | a | 2016 |
+-----------+-------------+-------------------+------+
+-----------+-------------+--+-----------+-------------------+------+
| table A | | | table B | | |
+-----------+-------------+--+-----------+-------------------+------+
| member id | member name | | member id | internet provider | date |
+-----------+-------------+--+-----------+-------------------+------+
| 1 | Sam | | 1 | a | 2012 |
+-----------+-------------+--+-----------+-------------------+------+
| 2 | Johnny | | 1 | b | 2013 |
+-----------+-------------+--+-----------+-------------------+------+
| 3 | Amanda | | 1 | c | 2014 |
+-----------+-------------+--+-----------+-------------------+------+
| | | | 2 | c | 2012 |
+-----------+-------------+--+-----------+-------------------+------+
| | | | 2 | b | 2013 |
+-----------+-------------+--+-----------+-------------------+------+
| | | | 2 | a | 2016 |
+-----------+-------------+--+-----------+-------------------+------+
您能否也请与我们分享您试图解决问题的方法? –
你不清楚。你不是在说你的意思。请使用更多的单词和句子。例如,你在总结什么,但不是通过“按最新日期查询数据过滤器”解释*?请阅读[mcve]并采取行动。 PS 1.如果您不知道如何使用2个表格进行总结,请先制作一张表格。 2 2是什么? 3?这里的桌子和你想要的有什么关系? – philipxy