Oracle SQL中如何將兩個查詢合二為一

Question

我們在生產中出現錯誤，幸運的是有一個手動解決方案，但是我每天早上必須運行兩個查詢來修復錯誤。 這太手動了，我想自動化這個並將兩個查詢合並為一個。 然而，我們只有在生產中出現這個錯誤，而不是在 DEV 或 QA 中，如果我搞砸了最終會導致混亂的組合查詢，所以我需要你的專業知識。

第一個查詢帶來項目編號

select id,  ugenProjectNumber
from unifier_uxpecai
where (pecaiChecklistNumber = 0 or pecaiChecklistNumber is null)
or (pecaiChecklistItemNumber = 0 or pecaiChecklistItemNumber is null)

第二個查詢修復了操作項和列表項之間斷開的鏈接，我手動將第一個查詢結果唯一的項目編號放入第二個查詢中，並根據每個唯一的項目編號運行第二個查詢。

update unifier_uxpecai pai
set (pai.pecaiChecklistNumber, pai.pecaiChecklistItemNumber) =
(
   select pcl.id, pcli.id
   from unifier_uxpecl pcl
   inner join unifier_uxpecl_lineitem pcli on pcli.uuu_tab_id = 0 and 
   pcli.record_id = pcl.id
   where pcl.ugenProjectNumber = 'GL-16-161010-143502'
   and pcli.pecItemActionItemBPC = pai.id
)
where exists
(
   select pcli.pecItemActionItemBPC
   from unifier_uxpecl pcl
   inner join unifier_uxpecl_lineitem pcli on pcli.uuu_tab_id = 0 and 
   pcli.record_id = pcl.id
   where pcl.ugenProjectNumber = 'GL-16-161010-143502'
   and pcli.pecItemActionItemBPC = pai.id
)
and (pai.pecaiChecklistNumber = 0 or pai.pecaiChecklistItemNumber = 0)

Answer 1

您可以將邏輯合並到查詢中：

update unifier_uxpecai pai
set (pai.pecaiChecklistNumber, pai.pecaiChecklistItemNumber) =
(select pcl.id, pcli.id
 from unifier_uxpecl pcl join
      unifier_uxpecl_lineitem pcli
      on pcli.uuu_tab_id = 0 and pcli.record_id = pcl.id
 where pcl.ugenProjectNumber in (select ugenProjectNumber
                                 from unifier_uxpecai
                                 where (pecaiChecklistNumber = 0 or pecaiChecklistNumber is null) or
                                       (pecaiChecklistItemNumber = 0 or pecaiChecklistItemNumber is null
                                ) and
       pcli.pecItemActionItemBPC = pai.id
)
where exists
(
   select pcli.pecItemActionItemBPC
   from unifier_uxpecl pcl join
        unifier_uxpecl_lineitem pcli
        on pcli.uuu_tab_id = 0 and 
           pcli.record_id = pcl.id
   where pcl.ugenProjectNumber in (select ugenProjectNumber
                                   from unifier_uxpecai
                                   where (pecaiChecklistNumber = 0 or pecaiChecklistNumber is null) or
                                         (pecaiChecklistItemNumber = 0 or pecaiChecklistItemNumber is null
                                  ) and
        pcli.pecItemActionItemBPC = pai.id
) and
(pai.pecaiChecklistNumber = 0 or pai.pecaiChecklistItemNumber = 0)