来自两个不同表的 Select 行，但使用 php 和 MySQL 按日期排序

Question

我有两个表；

我正在尝试制作一份对账单（如银行对账单）来显示所有费用和所有付款。费用和付款需要根据 statement_date 字段按日期顺序显示。

我很确定我需要使用 'unions'，但我似乎找不到解决方案。

我目前的努力是；

$statement_sql = "(SELECT * FROM accounts_tenant_charge)
UNION
(SELECT * FROM accounts_tenant_payment)
ORDER BY statement_date";

提前致谢。

Answer 1

您必须进行嵌套查询。首先，您根据 table 进行联合查询并放入内部查询。然后，您进行 SELECT 查询并放入外部。不要忘记为外部查询提供别名 table。

你可以试试这个代码：

SELECT * FROM
(
  (SELECT * FROM accounts_tenant_charge)
   UNION
  (SELECT * FROM accounts_tenant_payment)
) a 
ORDER BY a.statement_date ASC

Answer 2

您的表有不同的列数，因此您不能通过 select * 立即合并它们。您必须 select 两个表中的列数相等。喜欢：

select
  tenant_charge_id as `id`,
  tenant_charge_date as `date`,
  tenant_charge_total_amonunt as `amount`
union
select
  tenant_payment_id,
  tenant_payment_date,
  tenant_payment_amount
order by
  `date` asc

Answer 3

感谢您的帮助。以下查询对我有用；

SELECT tenant_charge_date as statement_date, tenant_charge_id as reference, tenant_charge_total_amount as debit, NULL as credit, 'Charge' as type FROM accounts_tenant_charge
UNION ALL
SELECT tenant_payment_date as statement_date, tenant_payment_id as reference, NULL as debit, tenant_payment_amount as credit, 'Payment' as type FROM accounts_tenant_payment
ORDER BY statement_date

来自两个不同表的 Select 行，但使用 php 和 MySQL 按日期排序

Select rows from two different tables but order by date using php and MySQL

php

mysql

union