来自同一个 table 的 INNER JOIN

Question

我需要在 mysql 相同的 table 中对两个查询进行内部联接 "ride":

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

第一次查询：

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。

Answer 1

您可以按照下面的方式进行。

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 >

来自同一个 table 的 INNER JOIN

INNER JOIN from the same table

sql

select

inner-join