mysql - 基于3个表进行更新

Question

我尝试同时更新3个表。 clients.id＆gt; cars.client_id＆gt; works.car_id是无法实现的

UPDATE clients, cars, works 
JOIN cars on cars.client_id = clients.id 
JOIN works on works.car_id = cars.id 
SET clients.name = '15-adsadadadsa' , 
clients.email = '15-aaa@aa.com' , 
clients.phone = '15-3232131', 
clients.email = '15-aaa@aa.com' , 
cars.reg = 'aaa-aaa' , 
cars.model = 'aaa-aaa' , 
cars.year = '111111' , works.work = 'aaaa' WHERE works.id = '15';

但是得到错误

不唯一的表/别名：'cars'

谢谢你的帮助！

Answer 1

这是因为x[a][t] == 1表被提及两次（在cars以及UPDATE中），如果它们是JOIN，则无需提及UPDATE中的表名称在JOIN中，试试这个：

UPDATE clients
JOIN cars on cars.client_id = clients.id 
JOIN works on works.car_id = cars.id 
SET clients.name = '15-adsadadadsa' , 
clients.email = '15-aaa@aa.com' , 
clients.phone = '15-3232131', 
clients.email = '15-aaa@aa.com' , 
cars.reg = 'aaa-aaa' , 
cars.model = 'aaa-aaa' , 
cars.year = '111111' , works.work = 'aaaa' WHERE works.id = '15';