在特定条件下计算和交换某些列中的结果

Question

各位极客们，我有一个 table ACNT 是这样的

 P_date     P_Supplier  P_parti   P_opnbal  P_Credit     P_Debit P_Remaining 
 NULL         varsha    opening    2000        0            0       2000
 2014-01-25  varsha     purchase    0          500          0        500
 NULL        nipun      opening    1000        0            0       1000
 2015-01-28  nipun      purchase    0          200          0        200
 2016-01-25  varsha     purchase    0          350          0        350

现在我触发此查询以获取总和或所有列

SELECT P_sname, SUM(P_opnbal) AS opneningbal, SUM(P_credit) AS credit, SUM(P_debit) AS debit, SUM(P_opnbal) + SUM(P_credit) - SUM(P_debit) AS closingbal
FROM ACNT
GROUP BY P_sname
ORDER BY P_sname DESC

所以我得到了这个结果

P_Supplier  P_opnbal    P_Credit    P_Debit CLossing
varsha      2000        850          0       2850
nipun       1000        200          0       1200

但现在我希望在特定日期范围内计算此列。例如。如果我想要 2015-01-28 和 2016-01-28 之间的数据。那么日期 2014-01-28 的 table 中存在的所有数据应显示为期初余额，如果给定日期范围内没有条目，贷方应为 0。

在第一个 table 中看到，该行有日期 2014-01-28 那么它的 P_credit 值应该加上它的 P_opnbal 值 i.i 2000 。所以结果应该显示 2500 作为期初余额。期望的结果应该是

Supplier   Opnbal   credit  Debit   closing balance
varsha     2500     350     0        2850
nipun      1000     200     0        1200

我知道我需要不止 1 个查询，我正处于学习阶段，这就是我尝试过的

SELECT P_sname, opneningbal + credit AS openingbal, credit, debit, closingbal
FROM 
(SELECT TOP (100) PERCENT P_sname, SUM(P_opnbal) AS opneningbal, SUM(P_credit) AS credit, SUM(P_debit) AS debit, SUM(P_opnbal) + SUM(P_credit)- SUM(P_debit) AS closingbal
 FROM ACNT
WHERE (P_date BETWEEN '2015-01-25' AND '2016-01-25')
GROUP BY P_sname
ORDER BY P_sname DESC) AS abc

但我没有得到想要的结果，请帮助我改进此查询。谢谢

Answer 1

根据我们在 asp.net room

中的聊天记录

我发现你的最终查询应该是

SELECT P_sname, (isnull((select sum(isnull(ac.P_credit,0)) from ACNT as ac where ac.P_sname=abc.P_sname and P_date<'2015-01-25'),0) 
+(select top(1) isnull(nt.p_opnbal,0) from acnt as nt where nt.p_sname=abc.P_sname and p_parti='Opening')) as opening_bal, credit, debit, ((isnull((select sum(isnull(ac.P_credit,0)) from ACNT as ac where ac.P_sname=abc.P_sname and P_date<'2015-01-25'),0) 
+(select top(1) isnull(nt.p_opnbal,0) from acnt as nt where nt.p_sname=abc.P_sname and p_parti='Opening'))+(credit-debit)) as closingBal 
FROM (SELECT TOP (100) PERCENT P_sname, SUM(P_opnbal) AS opneningbal, SUM(P_credit) AS credit, SUM(P_debit) AS debit, SUM(P_opnbal) + SUM(P_credit) 
- SUM(P_debit) AS closingbal, P_date 
FROM ACNT 
GROUP BY P_sname, P_date 
ORDER BY P_sname DESC) AS abc 
WHERE (P_date BETWEEN '2015-01-25' AND '2016-01-25')

提示：有更多的改进范围scaler 函数 可以最小化您的查询，您也可以仅通过一个 select 查询来做到这一点

谢谢。

在特定条件下计算和交换某些列中的结果

calculate and swap result in some columns on certain condition

mysql

sql

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