加入兩條select語句

Question

有誰能告訴我爲什麼以下不行？它抱怨兩個選擇之間的連接關鍵字附近有語法錯誤。

SELECT * 
FROM (select * from orders_products inner JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 181) 
as A 

join 

SELECT * 
FROM (select * from orders_products INNER JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 180) 
as B 

on A.orders_id=B.orders_id 

基本上我的第一SELECT翻出所有特定產品訂單的相關信息從一個表，並取出從另一個訂購的數量，並把它們組合在一起。第二個SELECT爲另一個產品做同樣的事情。現在

，我有

_______A_________   _______B_________
 
O_ID P_ID Q   O_ID P_ID Q 
 
1  180 3   1  181 11
 
2  180 9   2  181 6
 
3  180 5   3  181 3

，並使用另一個加盟我想

Q_ID P_ID1 Q1 P_ID2 Q2 

1  180 3  181  11 

2  180 9  181  6 

3  180 5  181  3

也許我在這裏採取了錯誤的做法。有什麼建議麼？

UPDATE： 這裏是我的指針後RedFilter什麼工作：

(SELECT * 
FROM (
SELECT * FROM orders_products 
INNER JOIN orders ON orders_products.orders_id = orders.orders_id 
WHERE products_id =181) AS A 
LEFT JOIN (
SELECT * FROM orders_products 
INNER JOIN orders ON orders_products.orders_id = orders.orders_id 
WHERE products_id =180) AS B ON A.orders_id = B.orders_id 
) 
UNION (
SELECT * 
FROM (
SELECT * 
FROM orders_products 
INNER JOIN orders ON orders_products.orders_id = orders.orders_id 
WHERE products_id =181 
) AS C 
RIGHT JOIN (
SELECT * 
FROM orders_products 
INNER JOIN orders ON orders_products.orders_id = orders.orders_id 
WHERE products_id =180 
) AS D ON C.orders_id = D.orders_id 
) 

Answer 1

不知道你正在嘗試做的，但你有兩個選擇條款。做到這一點，而不是：

SELECT * 
FROM (select * from orders_products inner JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 181) 
as A 

join 

(select * from orders_products INNER JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 180) 
as B 

on A.orders_id=B.orders_id 

更新：

你也許可以將其降低到這樣的事情：

select o.orders_id, op1.products_id, op1.quantity, op2.products_id, op2.quantity 
from orders o 
inner join orders_products op1 on o.orders_id = op1.orders_id 
inner join orders_products op2 on o.orders_id = op2.orders_id 
where op1.products_id = 180 
    and op2.products_id = 181 

Answer 2

您應該使用UNION如果你想不同的結果集組合。請嘗試以下操作：

(SELECT * 
FROM (select * from orders_products inner JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 181) 
as A) 
UNION 
(SELECT * 
FROM (select * from orders_products INNER JOIN orders ON orders_products.orders_id = orders.orders_id where products_id = 180) 
as B 
on A.orders_id=B.orders_id) 

Answer 3

這會做你想要什麼：

select * 
    from orders_products 
     INNER JOIN orders 
      ON orders_products.orders_id = orders.orders_id 
where products_id in (180, 181);