Oracle SQL結合了2個選擇到一列

Question

對不起，如果這聽起來含糊不清...我已經爲此尋找答案，但是，我覺得很難解釋 - 因此很難搜索。

我有一個非常簡單的腳本......

select pr1.polypart_no match_from, pr1.part_no match_to 
from oes_polybox_replace pr1 
where pr1.plant = 'W' 
and pr1.part_no = 
     (select max(pr2.part_no) 
      from oes_polybox_replace pr2 
      where pr2.plant = 'W' 
      and pr2.polypart_no = 'YPOLYGREY') 

...，顯示在第1列，零件號和第2欄，可以代替部分號碼使用的通用部分在第1列

我的問題是，我需要在第2列中添加部分第1列，即

有沒有辦法將2 select添加到一列？

Answer 1

這裏是一個例子工會

select pr1.polypart_no match_from 
from oes_polybox_replace pr1 
where pr1.plant = 'W' 
and pr1.part_no = 
     (select max(pr2.part_no) 
      from oes_polybox_replace pr2 
      where pr2.plant = 'W' 
      and pr2.polypart_no = 'YPOLYGREY') 
UNION 
select pr1.part_no match_from 
from oes_polybox_replace pr1 
where pr1.plant = 'W' 
and pr1.part_no = 
     (select max(pr2.part_no) 
      from oes_polybox_replace pr2 
      where pr2.plant = 'W' 
      and pr2.polypart_no = 'YPOLYGREY') 

UNION僅選擇不同的值，UNION ALL沒有。

如果您需要重新訂購，您可以將其進一步包裝。

SELECT match_from from (
select pr1.polypart_no match_from 
    from oes_polybox_replace pr1 
    where pr1.plant = 'W' 
    and pr1.part_no = 
      (select max(pr2.part_no) 
       from oes_polybox_replace pr2 
       where pr2.plant = 'W' 
       and pr2.polypart_no = 'YPOLYGREY') 
    UNION 
    select pr1.part_no match_from 
    from oes_polybox_replace pr1 
    where pr1.plant = 'W' 
    and pr1.part_no = 
      (select max(pr2.part_no) 
       from oes_polybox_replace pr2 
       where pr2.plant = 'W' 
       and pr2.polypart_no = 'YPOLYGREY')) tab 
order by match_from asc