Oracle SQL中如何将两个查询合二为一

Question

我们在生产中出现错误，幸运的是有一个手动解决方案，但是我每天早上必须运行两个查询来修复错误。 这太手动了，我想自动化这个并将两个查询合并为一个。 然而，我们只有在生产中出现这个错误，而不是在 DEV 或 QA 中，如果我搞砸了最终会导致混乱的组合查询，所以我需要你的专业知识。

第一个查询带来项目编号

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

第二个查询修复了操作项和列表项之间断开的链接，我手动将第一个查询结果唯一的项目编号放入第二个查询中，并根据每个唯一的项目编号运行第二个查询。

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

您可以将逻辑合并到查询中：

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)