Mysql SQL查询中的结转/结转余额

我创建了一个如下表：

Member_ID | Amount | BringForward | Balance | DateTime
101         -100                              2020-08-01 13:12:02.113
101         -200                              2020-08-01 14:15:23.115
101          300                              2020-08-02 10:25:15.315
101          500                              2020-08-05 08:47:56.286

我想为BringForward和Balance添加数据，BringForward将结转前一天的总金额（如果日期为8月1日，则将获得从数据第一天到7月31日的所有金额总和）。余额为正向-金额

我所期望的是：

Member_ID | Amount | BringForward | Balance | DateTime
101         -100     0              100       2020-08-01 13:12:02.113
101         -200     0              200       2020-08-01 14:15:23.115
101          300     -300           0         2020-08-02 10:25:15.315
101          500     0             -500      2020-08-05 08:47:56.286

我试过的是：

select MP.MEMBER_ID AS Member_ID, 
CONCAT(MP.AMT_TXN , MP.AMT_TXN_EX) AS Amount, 
sum(cast(concat(AMT_TXN,amt_txn_ex) as decimal)) over (order by mp.create_date) AS BringForward, 
(sum(cast(concat(AMT_TXN,amt_txn_ex) as decimal)) over (order by mp.create_date) - CONCAT(MP.AMT_TXN , MP.AMT_TXN_EX))  AS Balance, 
MP.CREATE_DATE AS DateTime
from MEMBER_TRANSFER MP

结果是：

Member_ID | Amount | BringForward | Balance | DateTime
101         -100     -100           0         2020-08-01 13:12:02.113
101         -200     -300          -100       2020-08-01 14:15:23.115
101          300      100          -200       2020-08-02 10:25:15.315
101          500      800           300       2020-08-05 08:47:56.286

成员转移表：

MEMBER_ID | AMT_TXN | AMT_TXN_EX | CREATE_DATE
101                   -100         2020-08-01 13:12:02.113
101                   -200         2020-08-01 14:15:23.115
101         300                    2020-08-02 10:25:15.315
101         500                    2020-08-05 08:47:56.286

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我认为您需要窗口功能和范围规范：

select
    member_id,
    amount,
    coalesce(sum(coalesce(amt_txn, 0) + coalesce(amt_txn_ex, 0)) over(
        partition by member_id
        order by datetime 
        range between unbounded preceding and interval 1 day preceding
    ), 0) bringforward,
    coalesce(sum((coalesce(amt_txn, 0) + coalesce(amt_txn_ex, 0)) over(
        partition by member_id
        order by datetime range between unbounded preceding and interval 1 day preceding
    ), 0) - (coalesce(amt_txn, 0) - coalesce(amt_txn_ex, 0) balance 
from member_transfer m

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“interval”附近存在语法不正确的错误。（红色下划线出现在单词“interval”下）你知道如何解决这个问题吗？@Mouris:你试过运行这个查询吗？您得到的确切错误是什么？