Question

select account
     , SUM(balance) as bal
from Main_report
Group BY account

如何将正面和负面记录与上述查询分开？我想将此查询与下面列出的案例结合起来。

select (case when bal < 0 then bal else 0 end) as debits,
(case when bal > 0 then bal else 0 end) as credits from Main_report
Group BY account

Answer 1

只需使用您的两个案例并总结其结果：

SELECT account
     , SUM(CASE WHEN balance < 0 THEN balance ELSE 0 END) as debits
     , SUM(CASE WHEN balance > 0 THEN balance ELSE 0 END) as credits
FROM Main_report
GROUP BY account

如何将正面和负面记录与计算所有余额总和的查询分开......？

1 个答案: