从 loanhist 获取最新的交易明细

Question

我有一个贷款历史记录 table，其中包含客户借入和偿还的所有贷款。有两个状态（在同一行）表示借贷和还贷：LD = loan disburse while LP = Loan Paid.

我的问题是这样的，我正在寻找：

未结余额（LD中的总和（本金+利息）-LP中的总和（本金+利息））
LD中的分期金额(sum(本金+利息))
所有 LD 的总和，即本金 + 利息作为贷款金额
最后还款日期，即在 LP
LP中支付的金额（本金+利息）

Table结构

这是我目前的解决方案：

LP

$amtdues = "select h.ac_no, loan_amt, MAX(trx_date) AS Last_Pay, MAX(principal+interest) as Last_Paid,  disb_date, exp_date,  principal+interest as loan_interest, MAX(principal-interest) as outstanding_balance, trx_date as payment_date from loanhist h, loans l where h.ac_no = '$id' and l.ac_no = '$id' and trx_type = 'LP' group by trx_date, loan_amt, disb_date, exp_date, h.ac_no, interest, principal, trx_date ";

$amts = sqlsrv_query($conn, $amtdues);

$lp = sqlsrv_fetch_array($amts, SQLSRV_FETCH_ASSOC);

对于LD

$amtdues2 = "select h.ac_no, loan_amt, MAX(trx_date) AS Last_Pay, disb_date, exp_date,  principal+interest as loan_interest, MAX(interest+principal) as outstanding_balance, MAX(interest+principal) as installment, trx_date as payment_date from loanhist h, loans l where h.ac_no = '$id' and l.ac_no = '$id' and trx_type = 'LD' group by trx_date, loan_amt, disb_date, exp_date, h.ac_no, interest, principal, trx_date ";

$amts2 = sqlsrv_query($conn, $amtdues2);
$ld = sqlsrv_fetch_array($amts2, SQLSRV_FETCH_ASSOC);

我的输出在html

<td><?php echo parseCurrency(abs($lmts['loan_limit']));?></td>
 <td><?php echo parseCurrency(abs($ld['loan_interest']));?></td>
 <td><?php echo parseCurrency(abs($ld['outstanding_balance'] - $lp['outstanding_balance']));?> </td>
 <td><?php echo parseCurrency(abs($ld['installment']));?></td>

在尝试了这些查询之后，我得到了不正确的值。有没有姐妹帮帮忙啊？

Answer 1

基于 loanhist 的 table 信息并对 loans 中的内容做出一些假设（并且 loans 中存在 1:many 关系至 loanhist)，我认为此查询将使您朝着正确的方向前进。

SELECT l.ac_no, 
       l.loan_amt,
       l.disb_date, 
       l.exp_date,  
       SUM(CASE WHEN trx_type='LD' THEN h.principal+h.interest ELSE 0 END) -
         SUM(CASE WHEN trx_type='LP' THEN h.principal+h.interest ELSE 0 END) AS outstanding_balance,
       MAX(CASE WHEN trx_type='LD' THEN h.principal+h.interest ELSE 0 END) AS instalment_amount,  
       SUM(CASE WHEN trx_type='LD' THEN h.principal+h.interest ELSE 0 END) AS loan_amount,
       MAX(CASE WHEN trx_type='LP' THEN trx_date ELSE NULL END) AS last_payment_date,
       SUM(CASE WHEN trx_type='LP' THEN h.principal+h.interest ELSE 0 END) AS amount_paid
FROM loans l
JOIN loanhist h
ON h.ac_no = l.ac_no
WHERE l.ac_no = '$id'
GROUP BY l.ac_no, l.loan_amt, l.disb_date, l.exp_date

从 loanhist 获取最新的交易明细

Get latest transaction details from loanhist

php

sql-server-2008

sqlsrv