获取结果

Question

我mysql.Suppose是新手，你有一个名为“表1”数据库表：

id cityA cityB producer 
_____________________________ 
1 Rome Berlin Alan 
2 Vienna Hanover Max 
3 Rome Berlin Peter 
4 London Siena  John 

首先，我想获得该行地方生产者艾伦：

$query = " 
SELECT cityA , cityB , producer 
FROM table1 
WHERE table1.producer = 'Alan' 
"; 

返回行id = 1。 我怎么现在可以得到所有行在相同的PHP脚本具有相同的cityA，cityB行1，我的意思是不使用第二个Ajax调用;

期待的结果：

1 Rome Berlin Alan 
    3 Rome Berlin Peter 

Answer 1

select t1.* 
from table1 t1 
join 
(
    SELECT cityA, cityB 
    FROM table1 
    WHERE producer = 'Alan' 
) t2 on t1.cityA = t2.cityA and t1.cityB = t2.cityB