所有，我正在使用以下 Sequel 查询...
select
u.full_name, u.id, sum(hit_count), tag_names
from MyTable as t
inner join MyUsers as u on u.id=t.user_id
where t.created_at >= '2015-1-01 04:00:00' AND t.created_at < '2015-2-01 04:00:00' AND tag_names like '%Tree%'
group by u.id
...渲染一个包含大约 1,000 行的数据表，如下所示：
| full_name | id | sum(hit_count) | tag_names |
| Fred Johnson | 001 | 1500 | Tree, Apple, Blue, Banana |
| Joe Smith | 002 | 663 | Tree, Red, Pear, Yellow |
| Tina Cook | 001 | 1500 | Tree, Berry, Red, Grape |
| Kyle Cross | 001 | 1500 | Tree, Berry, Red, Grape |
但是，因为我知道可用的原色标签（例如红色、蓝色、黄色）的数量有限，有没有办法调整我的 Sequel 查询以也按原色标签分组（并将原色标签列添加到我的表中）渲染...
| full_name | id | sum(hit_count) | tag_names | Primary_Color_Tag |
| Fred Johnson | 001 | 1500 | Tree, Apple, Blue, Banana | Blue |
| Joe Smith | 002 | 500 | Tree, Red, Pear, Yellow | Red |
| Tina Cook | 001 | 1500 | Tree, Berry, Red, Grape | Red |
| Kyle Cross | 001 | 1500 | Tree, Berry, Red, Grape | Red |
| Joe Smith | 001 | 163 | Tree, Red, Pear, Yellow | Yellow |
我在这个论坛上发现了类似的问题，这些问题看似相关的解决方案，但我无法拼凑他们的逻辑来重现我所追求的表格。任何见解将不胜感激！