SQL Server 在日期范围内聚合
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【中文标题】SQL Server 在日期范围内聚合【英文标题】:SQL Server aggregate over range of dates 【发布时间】:2016-07-29 11:43:29 【问题描述】:我使用的是 SQL Server 2014。我需要汇总按客户和位置划分或分组的日期范围内的总计(总和)。关键是获取所有调整金额并在它们适用于开票交易日期时对其进行汇总。
因此,在最后一个账单日期之后但小于下一个账单日期的所有调整都需要汇总并与账单金额一起很好地呈现。
查看示例:
+------------------+------------+------------+------------------+--------------------+
| TRANSACTION_TYPE | CUSTOMERID | LOCATIONID | TRANSACTION DATE | TRANSACTION AMOUNT |
+------------------+------------+------------+------------------+--------------------+
| bill | 215 | 102 | 7/7/2016 | $100.00 |
| bill | 215 | 102 | 6/6/2016 | $121.00 |
| adj | 215 | 102 | 6/1/2016 | $22.00 |
| adj | 215 | 102 | 5/8/2016 | $0.35 |
| adj | 215 | 102 | 5/7/2016 | $5.00 |
| bill | 215 | 102 | 5/6/2016 | $115.00 |
| bill | 215 | 102 | 4/7/2016 | $200.00 |
| adj | 215 | 102 | 4/2/2016 | $4.35 |
| adj | 215 | 102 | 4/1/2016 | $(0.50) |
| adj | 215 | 102 | 3/28/2016 | $33.00 |
| bill | 215 | 102 | 3/28/2016 | $75.00 |
| adj | 215 | 102 | 3/5/2016 | $0.33 |
| bill | 215 | 102 | 3/3/2016 | $99.00 |
+------------------+------------+------------+------------------+--------------------+
我想看到的是以下内容:
+------------------+------------+------------+------------------+-------------+-------------------+
| TRANSACTION_TYPE | CUSTOMERID | LOCATIONID | TRANSACTION DATE | BILL AMOUNT | ADJUSTMENT AMOUNT |
+------------------+------------+------------+------------------+-------------+-------------------+
| bill | 215 | 102 | 7/7/2016 | $100.00 | $- |
| bill | 215 | 102 | 6/6/2016 | $121.00 | $27.35 |
| bill | 215 | 102 | 5/6/2016 | $115.00 | $- |
| bill | 215 | 102 | 4/7/2016 | $200.00 | $36.85 |
| bill | 215 | 102 | 3/28/2016 | $75.00 | $0.33 |
| bill | 215 | 102 | 3/3/2016 | $99.00 | $- |
+------------------+------------+------------+------------------+-------------+-------------------+
【问题讨论】:
【参考方案1】:你需要:
首先将表设想为 TransactionType 上的两个(虚拟)子表; 然后使用 LEAD 函数获取要应用的调整的日期范围;和 最终执行 eft 连接。以下未经测试的 SQL:
with
BillData as (
select
TransactionType,
CustomerID,
LocationID,
TransactionDate,
TransactionAmount,
lead(TransactionDate, 1) over (partition by CustomerID
order by TransactionDate) as NextDate
from @data bill
where TransactionType = 'bill'
),
AdjData as (
select
CustomerID,
TransactionDate,
sum(TransactionAmount) as AdjAmount
from @data adj
where TransactionType = 'adj'
)
select
bill.TransactionType,
bill.CustomerID,
bill.LocationID,
bill.TransactionDate,
sum(TransactionAmount) as BillAmount,
sum(AdjAmount) as AdjAmount
from BillData bill
left join AdjData adj
on adj.CustomerID = bill.CustomerID
and bill.TransactionDate <= adj.TransactionDate
and adj.TransactionDate < bill.NextDate
group by
bill.TransactionType,
bill.CustomerID,
bill.LocationID,
bill.TransactionDate
;
【讨论】:
感谢您的帮助。该查询并不完全有效,但它确实为我指明了正确的方向,所以我会接受这个作为正确答案。再次感谢!【参考方案2】:这就是我最终做的:
select
bill.TransactionType,
bill.CustomerID,
bill.LocationID,
bill.TransactionDate,
TransactionAmount as BillAmount,
sum(AdjAmount) as AdjAmount
from
(
select
TransactionType,
CustomerID,
LocationID,
TransactionDate,
TransactionAmount,
lag(TransactionDate, 1) over (partition by CustomerID, LocationID
order by TransactionDate) as PreviousDate --NextDate
from test1
where TransactionType = 'bill'
) as bill
left join
(
select
CustomerID,
LocationID,
TransactionDate,
TransactionAmount as AdjAmount
from test1
where TransactionType = 'adj'
) as adj
ON
adj.CustomerID = bill.CustomerID
and adj.LocationID = bill.LocationID
and adj.TransactionDate >= bill.PreviousDate
and adj.TransactionDate < bill.TransactionDate
group by
bill.TransactionType,
bill.CustomerID,
bill.LocationID,
bill.TransactionDate,
bill.TransactionAmount
order by 4 desc
【讨论】:
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