我想将这两个选择列表相互添加答案

【问题标题】：I want to add these two select lists with each other我想将这两个选择列表相互添加
【发布时间】：2017-05-25 02:56:36
【问题描述】：

select name,value from  (  
    select name,value from 
    (
      select 'WHB' name,count(*) value from bld_comp_prep where bld_comp_code ='WHB' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    union all
      select 'RBC' name,count(*) value from bld_comp_prep where bld_comp_code ='RBC' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    union all
      select 'FFP' name,count(*) value from bld_comp_prep where bld_comp_code ='FFP' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    union all
      select 'PLC' name,count(*) value from bld_comp_prep where bld_comp_code ='PLC' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    union all
      select 'CRY' name,count(*) value from bld_comp_prep where bld_comp_code ='CRY' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    union all
      select 'GRC' name,count(*) value from bld_comp_prep where bld_comp_code ='GRC' and comp_code =:a_bld_user_comp and nvl(status,'S')='S' and nvl(delete_flag,'N') ='N'
    ) 
left JOIN ( 
select name,value from(
  select  'WHB' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='WHB' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
union all
  select  'RBC' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='RBC' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
union all
  select  'FFP' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='FFP' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
union all
  select  'PLC' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='PLC' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
union all
  select  'CRY' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='CRY' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
union all
  select  'GRC' name, count(*) value from bld_issue_dtl dtl,bld_issue_hdr hdr,bld_comp_prep prep where prep.bld_comp_code ='GRC' and hdr.issue_code =dtl.issue_code and hdr.comp_code =dtl.comp_code and dtl.comp_bag_code =prep.comp_bag_code and dtl.comp_code =prep.comp_code and TO_DATE(hdr.issue_date,'DD-MON-YY') =TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
)));

【问题讨论】：

这不是问题。问题以字符? 结尾。而且我不知道您所说的“将这两个选择列表相互添加”是什么意思。
问题不清楚。您可能想查看minimal reproducible example 以构建示例并澄清您的问题。照原样，我相信这个问题很快就会结束。
我注意到两件事：1）您的内部查询可以只是一个带有 GROUP BY 的查询，2）您应该使用 JOIN 而不是 SELECT ... FROM x, y WHERE ...修复这些之后，看看连接两个表的正确连接是否更清晰。
@Gary_W 我看了预编辑，圣牛。很好的编辑，让我免于心脏病发作。 :P
@Gary_W 抱歉，更重要的是您进行了出色的编辑，而不是其他任何事情。我目前正在检查它。

标签： sql oracle

【解决方案1】：

你的内部查询可以写成

  select bld_comp_code name, count(*) value 
  from bld_comp_prep 
  where comp_code =: a_bld_user_comp 
    and nvl(status,'S')='S' 
    and nvl(delete_flag,'N') ='N'
    and bld_comp_code IN ('WHB', 'RBC', 'FFP', 'PLC', 'CRY')
  group by bld_comp_code

和

select  prep.bld_comp_code name, count(*) value 
from bld_issue_dtl dtl,
     bld_issue_hdr hdr,
     bld_comp_prep prep 
where hdr.issue_code = dtl.issue_code 
  and hdr.comp_code = dtl.comp_code 
  and dtl.comp_bag_code = prep.comp_bag_code 
  and dtl.comp_code = prep.comp_code 
  and TO_DATE(hdr.issue_date,'DD-MON-YY') = TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
  and prep.bld_comp_code IN ('WHB', 'RBC', 'FFP', 'PLC', 'CRY')
group by prep.bld_comp_code

可以用首选的 JOIN 语法写成：

select  prep.bld_comp_code name, count(*) value 
from bld_issue_dtl dtl
INNER JOIN bld_issue_hdr hdr
        ON hdr.issue_code = dtl.issue_code 
       and hdr.comp_code = dtl.comp_code 
INNER JOIN bld_comp_prep prep 
        ON dtl.comp_bag_code = prep.comp_bag_code 
       and dtl.comp_code = prep.comp_code 
where TO_DATE(hdr.issue_date,'DD-MON-YY') = TO_DATE(:P29_STOCK_DATE,'DD-MON-YY')
  and prep.bld_comp_code IN ('WHB', 'RBC', 'FFP', 'PLC', 'CRY')
group by prep.bld_comp_code

但不清楚您打算如何加入这两个集合或预期结果是什么。

【讨论】：

@Aleksej 很好 - 忘记在别名之前添加列。