[英]DB2 SQL query to SUM the column and Subtract column
I have TRAN_AM
(Transaction amount) and DB_CRD_ID
(Debit Credit ind).我有
TRAN_AM
(交易金额)和DB_CRD_ID
(借记贷记 ind)。 I have to SUM the TRAN_AM based on the credit debit indicator in a single query.我必须在单个查询中根据贷记借记指示对 TRAN_AM 求和。
Input:输入:
Acct TRAN_AM DB_CRD_ID
AAAAAA 10 D
AAAAAA 10 C
AAAAAA 10 D
My output should be 10, D. Also have to manage negative if Credit is higher.我的 output 应该是 10,D。如果信用较高,也必须管理负数。
This query will be used as subquery, As I have to compare this amount with the another table.此查询将用作子查询,因为我必须将此数量与另一个表进行比较。
Thanks in advance.提前致谢。
select SUM(TRAN_AM *
case DB_CRD_ID
when 'D' THEN 1
when 'C' THEN -1
END
)
from TABLE;
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