Question

我正在寻找一个查询，其中根据account_num和item_order将一定数量的金额分配到下面的每张发票中。此外，如果partial_payment_allowed设置为＆＃39; N＆＃39;然后，只有当分配金额大于invoice_amt时才会发生上述金额的分配，否则它应该跳过该行并继续到该帐户的下一个发票。

Item_order   inv_amount   Partial_pmt            account_num     cr_amt
1             1256         Y                       12             1000
2             1134         Y                       12             1000
1             800          Y                       13             1200
2             200          N                      13             1200
3             156          N                       13             1200

在上面的数据中，每个帐户都有一个cr_amt，可以根据item_order进行分发。因此，分配后的结果将是

account_num    Item_order  inv_amount  Partial_pmt  Dist_amt    Bal_amt
   12          1             1256        Y          1000        256
   12          2             1134        Y          256         878  
   13          1             800         Y          800         400
   13          2             200         N          200         200   
   13          3             156         N          100         100

我们正在努力避免循环，任何评论都非常感谢。谢谢。

Answer 1

扩展这个问题的答案： payment distrubution oracle sql query

您仍然可以使用SQL MODEL子句。在此版本中，您需要为每个不同的account_num单独计算。您可以使用SQL PARTITION子句的MODEL关键字来实现此目的，以account_num进行分区。

像这样（请参阅SQL注释以获得逐步说明）：

-- Set up test data (since I don't have your table)
WITH inv_raw (item_order, inv_amount, partial_pmt_allowed, account_num, cr_amt) AS (
SELECT 1, 1256, 'Y', 12, 1000 FROM DUAL UNION ALL
SELECT 2, 1134, 'Y', 12, 1000 FROM DUAL UNION ALL
SELECT 3, 800, 'Y', 13, 1200 FROM DUAL UNION ALL
SELECT 4, 200, 'N',13, 1200 FROM DUAL UNION ALL
SELECT 5, 156, 'N',13, 1200 FROM DUAL),
-- Ensure that the column we are ordering by is densely populated
inv_dense (dense_item_order, item_order, inv_amount, partial_pmt_allowed, account_num, cr_amt) AS
( SELECT DENSE_RANK() OVER ( PARTITION BY account_num ORDER BY item_order ), item_order, inv_amount, partial_pmt_allowed, account_num, cr_amt FROM inv_raw )
-- Give us a way to input the payment amount
--param AS ( SELECT 1100 p_payment_amount FROM DUAL )
-- The actual query starts here
SELECT 
   account_num,
   item_order,
   inv_amount,
   partial_pmt_allowed,
   applied dist_amount,
   remaining_out balance_amt,
   cr_amt
FROM inv_dense
MODEL
-- We want a completely separate calculation for each distinct account_num
PARTITION BY ( account_num )
-- We'll output one row for each value of dense_item_order.
-- We made item_order "dense" so we can do things like CV()-1 to get the 
--   previous row's values.
DIMENSION BY ( dense_item_order )
MEASURES ( cr_amt, item_order, inv_amount, 
           partial_pmt_allowed, 0 applied, 
           0 remaining_in, 0 remaining_out )
RULES AUTOMATIC ORDER (
-- The amount carried into the first row is the payment amount
remaining_in[1] = cr_amt[1],
-- The amount carried into subsequent rows is the amount we carried out of the prior row
remaining_in[dense_item_order > 1] = remaining_out[CV()-1],
-- The amount applied depends on whether the amount remaining can cover the invoice
-- and whether partial payments are allowed
applied[ANY] = CASE WHEN remaining_in[CV()] >= inv_amount[CV()] OR partial_pmt_allowed[CV()] = 'Y' THEN LEAST(inv_amount[CV()], remaining_in[CV()]) ELSE 0 END,
-- The amount we carry out is the amount we brought in minus what we applied
remaining_out[ANY] = remaining_in[CV()] - applied[CV()]
)
ORDER BY account_num, item_order;

sql支付分配

1 个答案: