来自同一张表的 INNER JOIN答案

【问题标题】：INNER JOIN from the same table来自同一张表的 INNER JOIN
【发布时间】：2015-12-07 16:07:26
【问题描述】：

我需要在 mysql 同一个表“ride”中对两个查询进行内连接：

id| appointment_address|arrival_city| arrival_country|departure_city|departure_country|end_date|nb_places|price|start_date|travel_id|rank

第一个查询：

SELECT DISTINCT travel_id FROM ride  WHERE departure_city LIKE <value> AND start_date > <value> OR departure_country LIKE <value> AND start_date > <value>;

第二个

SELECT DISTINCT travel_id FROM ride  WHERE arrival_city LIKE <value2> AND start_date > <value> OR departure_country LIKE <value2> AND start_date > <value>;

感谢您的帮助。

【问题讨论】：

标签： sql select inner-join

【解决方案1】：

你可以这样做。

select * 
from (SELECT DISTINCT travel_id FROM ride  WHERE departure_city LIKE <value> AND start_date > <value> OR departure_country LIKE <value> AND start_date > <value>) firstQuery

Join 
(SELECT DISTINCT travel_id FROM ride  WHERE arrival_city LIKE <value2> AND start_date > <value> OR departure_country LIKE <value2> AND start_date > <value>) secondQuery on firstQuery.<field_to_join > = secondQuery.<field_to_join >

【讨论】：