mysql - 如何编写查询以在我的 sql 中获取如下所示的输出

Question

账单表

Bill_date   Total
28/10/13    10000
27/10/13    5000

付款表

Paid_on    amount
28/10/13   5000
30/10/13   10000

预期输出

date        Credit    debit
27/10/13    5000    
28/10/13    10000     5000
30/10/13              10000

Answer 1

试试这个

SELECT t1.bill_date, t1.total as Credit, t2.total as debit  FROM Bills t1
LEFT JOIN Payments t2 ON t1.bill_date= t2.bill_date
UNION
SELECT t2.bill_date, t1.total as Credit, t2.total as debit FROM Bills t1
RIGHT JOIN Payments t2 ON t1.bill_date= t2.bill_date