如何将以下子查询包含到存储过程中[关闭]

Question

   with cte as
    (
    select trd_nbr,[date],sum(case when txn_typ='A' then abs(amount) else 0 end) 
     amountforA,
    sum(case when txn_typ='B' then abs(amount) else 0 end) amountforB, 
    sum(case when txn_typ='C' then abs(amount) else 0 end) amountforC
    from table1
    group by trd_nbr,[date]
     )
    select trd_nbr,[date], 
      (case when amountforA=amountforB and amountforB=amountforC then amountforC 
    else amountforA-amountforC end) Amount,
     (case when amountforA=amountforB and amountforB=amountforC then 'M' else 
      'NM' end) Matched
      from cte WHERE amountforA>0 and amountforB>0 and amountforC>0

如何将上述查询用于存储过程

 create proc proc name()
    begin 
    select amount, matched ,...from table1 
  where condition.. 
union all 
select column1, column2.... from table2
    where condition.. 
    end;

这里的数量和匹配列取自 with 子句。如何使用它..

Answer 1

如果事务类型是固定的，那么可以使用pivot 轻松实现。请尝试以下方法：

drop table if exists #temp
select *
into #temp
from
(
    select trd_nbr, txn_typ, sum(abs(amount)) total
    from tab t
    group by trd_nbr, txn_typ
)t
pivot 
(
    sum(total) for txn_typ in ([A], [B], [C])
)pvt

select trd_nbr, case when C=A then C else A-C end as Final_C_amount
from #temp

您也可以检查 B 和 C。

请找到 dbfiddle here。