SQL查询联接具有不同列数的两个不同查询

Question

我在这里有两个查询：

查询1：

SELECT allowdeductname_en, SUM(SFD_comp_value_tax@;emp_id) as                                                                                                                                      
GGG                                                                                                                                                                                                 
FROM TPYDPROCMTDD md                                                                                       
LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
md.company_id = mh.company_id                                                                                                                                                                                                                                                    
WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
AND md.company_id = '13565'
AND mh.company_id = '13565'
AND year(mh.paydate) = 2017                                                           
AND month(mh.paydate) = 1 
AND mh.costcenter_code = 99990001
group by allowdeductname_en
order by allowdeductname_en

查询2：

SELECT distinct allowdeductname_en                                                                                                                                                                                              
FROM TPYDPROCMTDD md                                                                                       
LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
md.company_id = mh.company_id                                                                                                                                                                                                                                                    
WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
AND md.company_id = '13565'
AND mh.company_id = '13565'
AND year(mh.paydate) = 2017                                                           
AND month(mh.paydate) = 1
order by allowdeductname_en 

查询1和查询2的结果

无论如何，我可以相交，合并或合并这两个查询，以便看起来像这样：

预期成绩：

我尝试了许多不同的方法来完成此操作，但仍然无法获得想要的结果。 伙计们请帮忙！

Answer 1

好吧，这是最简单的解决方案：

select * from (/*query number 2*/) [a]
left join (/*query number 1*/) [b] 
on [a].allowdeductname_en = [b].allowdeductname_en

但是您可以在一个查询中完成此操作，因为两个查询都使用同一张表，但是为了提供该解决方案，我需要查看您的数据。

Answer 2

select t2.allowdeductname_en, GGG=isnull(t1.GGG,0)
 from 
(SELECT distinct allowdeductname_en                                                                                                                                                                                              
FROM TPYDPROCMTDD md                                                                                       
LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
md.company_id = mh.company_id                                                                                                                                                                                                                                                    
WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
AND md.company_id = '13565'
AND mh.company_id = '13565'
AND year(mh.paydate) = 2017                                                           
AND month(mh.paydate) = 1 ) t2

LEFT JOIN 

(SELECT allowdeductname_en, SUM(SFD_comp_value_tax@;emp_id) as                                                                                                                                      
GGG                                                                                                                                                                                                 
FROM TPYDPROCMTDD md                                                                                       
LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
md.company_id = mh.company_id                                                                                                                                                                                                                                                    
WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
AND md.company_id = '13565'
AND mh.company_id = '13565'
AND year(mh.paydate) = 2017                                                           
AND month(mh.paydate) = 1 
AND mh.costcenter_code = 99990001
group by allowdeductname_en)  t1 on t2.allowdeductname_en=t1.allowdeductname_en


this is not the best query but it give you the result you want. 

Answer 3

这些查询仅在条件costcenter_code = 99990001有所不同。 将其移至聚合函数SUM ：

select allowdeductname_en,
  sum(case when mh.costcenter_code = 99990001 then sfd_comp_value_tax end) as ggg
from tpydprocmtdd md
left join tpydprocmtdh mh on md.procmtdh_id = mh.procmtdh_id
                          and md.company_id = mh.company_id
                          and year(mh.paydate) = 2017
                          and month(mh.paydate) = 1
where md.allowdeducttype = 'A'
and md.company_id = 13565
group by allowdeductname_en
order by allowdeductname_en;

Answer 4

您可以在两个之间使用带有ISNULL的LEFT JOIN ：

;WITH FirstQuery AS
(
    SELECT 
        allowdeductname_en, 
        SUM(SFD_comp_value_tax@;emp_id) as    GGG                                                                                                                                                                                                 
    FROM TPYDPROCMTDD md                                                                                       
    LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
    md.company_id = mh.company_id                                                                                                                                                                                                                                                    
    WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
    AND md.company_id = '13565'
    AND mh.company_id = '13565'
    AND year(mh.paydate) = 2017                                                           
    AND month(mh.paydate) = 1 
    AND mh.costcenter_code = 99990001
    group by allowdeductname_en
),
SecondQuery AS
(
    SELECT distinct allowdeductname_en                                                                                                                                                                                              
    FROM TPYDPROCMTDD md                                                                                       
    LEFT JOIN TPYDPROCMTDH mh on md.procmtdh_id = mh.procmtdh_id and 
    md.company_id = mh.company_id                                                                                                                                                                                                                                                    
    WHERE md.allowdeducttype = 'A'                                                                                                                                                                                                                                                     
    AND md.company_id = '13565'
    AND mh.company_id = '13565'
    AND year(mh.paydate) = 2017                                                           
    AND month(mh.paydate) = 1
)
SELECT
    S.allowdeductname_en,
    ISNULL(N.GGG, 0) AS GGG
FROM
    SecondQuery AS S
    LEFT JOIN FirstQuery AS N ON S.allowdeductname_en = N.allowdeductname_en