mysql的分組，連接和ORDER BY問題

Question

我需要的結果是這樣的：

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 

我的代碼是這樣的：

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 
; 

它給了我這樣的：

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 

我不知道如何使它如上所示顯示。我曾嘗試搞亂順序和分組，我得到了同樣的結果。我不確定如何將結果縮小到結果應該如何。

Answer 1

嘗試用：

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;