Sql server Sql Server如何在另一条记录中存储字段的值

我使用UNION从两个数据库中提取数据。我创建了一个名为Ccode的字段来指示记录来自哪个数据库。然后，我使用CASE语句创建另一个名为Elmin的字段，并根据Account字段使用Balance字段（另一个计算字段）填充它。 我想做的是为一条记录（其中Account=1113）获取Elimn字段的值，并将其复制到Account=3104的记录中（我将一家公司的应收账款与另一家公司的应付账款进行抵销），有什么方法可以做到这一点吗

我曾考虑使用一个变量，但我似乎不知道如何将一个计算字段放入一个变量中，因为它需要如此复杂的Select语句（使用联接、多个字段和计算）

我不想保存数据！！请不要用Alter table或Insert等回答我。我只想显示结果。 有什么想法吗

电流输出：

Account      AcctName                    Ccode      Balance      Elmin
1112      Accounts Receivable - (U.S.)      C      1250923.94      0
1112      Accounts Receivable (U.S.)        U      0               0
1113      Accounts Receivable - I/C          U      223780.55      223780.55
3104      Accounts Payable - I/C            C      -254000         0

希望：

Account      AcctName                    Ccode      Balance      Elmin
1112      Accounts Receivable - (U.S.)      C      1250923.94      0
1112      Accounts Receivable (U.S.)        U      0               0
1113      Accounts Receivable - I/C          U      223780.55      223780.55
3104      Accounts Payable - I/C            C      -254000        223780.55

SELECT        T1.Account, T2.AcctName, 'U' AS Ccode, SUM(T1.Debit - T1.Credit) AS 'Balance', 

CASE 
    WHEN T1.Account IN (1113) THEN SUM(T1.Debit - T1.Credit) ELSE 0 
END AS Elmin

FROM            OJDT AS T0 INNER JOIN
                         JDT1 AS T1 ON T0.TransId = T1.TransId INNER JOIN
                         OACT AS T2 ON T1.Account = T2.AcctCode
WHERE        (CAST(T0.RefDate AS date) >= @Start_Date) AND (CAST(T0.RefDate AS date) <= @End_Date) AND (T2.GroupMask IN ('1', '2', '3'))
GROUP BY T1.Account, T2.AcctName, T2.GroupMask, T2.FatherNum

union all

SELECT        T1.Account, T2.AcctName, 'C' AS Ccode, SUM(T1.Debit - T1.Credit) AS 'Balance', 

CASE WHEN T1.Account IN (1251) THEN SUM(T1.Debit - T1.Credit) ELSE 0 
END AS Elmin

FROM            CANADACO.dbo.OJDT AS T0 INNER JOIN
                         CANADACO.dbo.JDT1 AS T1 ON T0.TransId = T1.TransId INNER JOIN
                         CANADACO.dbo.OACT AS T2 ON T1.Account = T2.AcctCode
WHERE        (CAST(T0.RefDate AS date) >= @Start_Date) AND (CAST(T0.RefDate AS date) <= @End_Date) AND (T2.GroupMask IN ('1', '2', '3'))
GROUP BY T1.Account, T2.AcctName, T2.GroupMask, T2.FatherNum
ORDER BY T1.Account

代码：

Account      AcctName                    Ccode      Balance      Elmin
1112      Accounts Receivable - (U.S.)      C      1250923.94      0
1112      Accounts Receivable (U.S.)        U      0               0
1113      Accounts Receivable - I/C          U      223780.55      223780.55
3104      Accounts Payable - I/C            C      -254000        223780.55

SELECT        T1.Account, T2.AcctName, 'U' AS Ccode, SUM(T1.Debit - T1.Credit) AS 'Balance', 

CASE 
    WHEN T1.Account IN (1113) THEN SUM(T1.Debit - T1.Credit) ELSE 0 
END AS Elmin

FROM            OJDT AS T0 INNER JOIN
                         JDT1 AS T1 ON T0.TransId = T1.TransId INNER JOIN
                         OACT AS T2 ON T1.Account = T2.AcctCode
WHERE        (CAST(T0.RefDate AS date) >= @Start_Date) AND (CAST(T0.RefDate AS date) <= @End_Date) AND (T2.GroupMask IN ('1', '2', '3'))
GROUP BY T1.Account, T2.AcctName, T2.GroupMask, T2.FatherNum

union all

SELECT        T1.Account, T2.AcctName, 'C' AS Ccode, SUM(T1.Debit - T1.Credit) AS 'Balance', 

CASE WHEN T1.Account IN (1251) THEN SUM(T1.Debit - T1.Credit) ELSE 0 
END AS Elmin

FROM            CANADACO.dbo.OJDT AS T0 INNER JOIN
                         CANADACO.dbo.JDT1 AS T1 ON T0.TransId = T1.TransId INNER JOIN
                         CANADACO.dbo.OACT AS T2 ON T1.Account = T2.AcctCode
WHERE        (CAST(T0.RefDate AS date) >= @Start_Date) AND (CAST(T0.RefDate AS date) <= @End_Date) AND (T2.GroupMask IN ('1', '2', '3'))
GROUP BY T1.Account, T2.AcctName, T2.GroupMask, T2.FatherNum
ORDER BY T1.Account

选择T1.科目，T2.科目名称，“U”作为科目代码，总和（T1.借方-T1.贷方）作为“余额”，
案例
当T1.账户在（1113）中时，则求和（T1.借方-T1.贷方）否则为0
以埃尔明结束
从OJDT到T0内部连接
JDT1作为T0.TransId=T1.TransId内部连接上的T1
OACT作为T1上的T2。帐户=T2.AcctCode
其中（CAST（T0.RefDate AS date）>=@Start_date）和（CAST（T0.RefDate AS date）=@Start_date）和（CAST（T0.RefDate AS date）您可以将这些子查询包装到公共表表达式（CTE）中。这将为您提供单独的结果集，以与
union all
和
交叉应用相结合

样本数据

简化数据，但
Elmin
仍然可以是计算字段

declare @Database1Table table
(
    Account int,
    Ccode nvarchar(1),
    Elmin money
);
insert into @Database1Table (Account, Ccode, Elmin) values
(1112, 'U', 0.0),
(1113, 'U', 223780.55);

declare @Database2Table table
(
    Account int,
    Ccode nvarchar(1),
    Elmin money
);
insert into @Database2Table (Account, Ccode, Elmin) values
(1112, 'C', 0.0),
(3104, 'C', 0.0);

简化查询，
Elmin
计算为总和：

select d1.Account, d1.Ccode, sum(d1.Elmin) as Elmin
from @Database1Table d1
group by d1.Account, d1.Ccode
    union all
select d2.Account, d2.Ccode, sum(d2.Elmin) as Elmin
from @Database2Table d2
group by d2.Account, d2.Ccode
order by d1.Account;

当前结果：

Account     Ccode Elmin
----------- ----- ---------------------
1112        C     0,00
1112        U     0,00
1113        U     223780,55
3104        C     0,00

解决方案

将子查询移动到两个CTE（
CTE_d1
和
CTE_d2
）中。使用
交叉应用
获取
Account=3104
行（
case
表达式）的替换值

这使得：

Account     Ccode Elmin
----------- ----- ---------------------
1112        C     0,00
1112        U     0,00
1113        U     223780,55
3104        C     223780,55

我强烈建议一个更好的别名策略。就像你在UNION上面的代码中写了1113一样……3104不能也被显式添加吗？