mysql 分组、连接和排序问题

Question

我需要的结果如下:

person_id   last_name   first_name  region_id   region name                         
  1         barnum         phineas      1       maricopa                                    
  2         loman          willy        2       pima                                        
  2         loman          willy        3       pinal                                       
  2         loman          willy        4       santa cruz                                  
  3         kay            mary         5       cochise                                     
  3         kay            mary         6       gila                                        
  3         kay            mary         7       graham  

我的代码是这样的:

select `person_id`, `last_name`, `first_name`,
`Region_id`, `name` AS 'Region Name'   
from `sales_region`  
inner join sales_people  
on `person_id` = `person_id`      
group by  `region_id` asc, `person_id`        
having `person_id`in ('1','2','3')       
order by `person_id`,`region_id` asc
;

它给了我这个:

person_id   last_name   first_name  Region_id   "Region Name"
1           barnum      phineas     1            maricopa
1           barnum      phineas     2             pima
1           barnum      phineas     3            pinal
1           barnum      phineas     4         santa cruz
1           barnum      phineas     5           cochise
1           barnum      phineas     6            gila
1           barnum      phineas     7           graham
2           loman       willy       1          maricopa
2           loman       willy       2          pima
2           loman       willy       3          pinal
2           loman       willy       4          santa cruz
2           loman       willy       5          cochise
2           loman       willy       6          gila
2           loman       willy       7          graham
3           kay         mary        1          maricopa
3           kay         mary        2              pima
3           kay         mary        3           pinal
3           kay         mary        4       santa cruz
3           kay         mary        5       cochise
3           kay         mary        6       gila
3           kay         mary        7       graham

我不知道如何制作它，所以它显示得像上面那样。我尝试弄乱 order by 和 group by 并得到相同的结果。我不知道如何将范围缩小到结果应该如何。

Answer 1

尝试:

select sales_people.person_id, last_name, first_name, sales_region.Region_id, trim(sales_region.name) AS 'Region Name'   
   from sales_region
   inner join sales_people_region on sales_people_region.region_id = sales_region.region_id 
   inner join sales_people on sales_people_region.person_id = sales_people.person_id

where sales_people.person_id in (1,2,3)
group by  sales_region.region_id, sales_people.person_id
order by sales_people.person_id, sales_region.region_id asc;