mysql查詢子查詢循環？

Question

我有一個查詢

SELECT 
    count(product) as amount, 
    product, 
    sum(price) AS price 
FROM `products` 
WHERE 
    brid = 'broker' 
AND 
    cancelled is null 
GROUP BY product 
WITH ROLLUP 

是否可以查詢表得到一個經紀人ID，然後爲每個代理運行查詢，上面寫的是1個查詢？

幾乎像：

SELECT brid FROM membership 
THEN 

SELECT 
    count(product) as amount, 
    product, 
    sum(price) AS price 
FROM `products` 
WHERE 
    brid = membership.brid 
AND 
    cancelled is null 
GROUP BY product 
WITH ROLLUP 

THEN 
SELECT NEXT brid 

這可能嗎？我知道如何在PHP中做到這一點，但我更喜歡1查詢可以創建一個數組而不是每個查詢噸。

謝謝 亞當。

Answer 1

SELECT 
    count(product) as amount, 
    product, 
    sum(price) AS price 
FROM `products` 
INNER JOIN membership on membership.brid = products.brid 
WHERE 
    cancelled is null 
GROUP BY product 
WITH ROLLUP 

Answer 2

當然，您可以GROUP BY「brid」字段和「product」字段。如下文所述，WITH ROLLUP將導致其由「布里德」進行排序，然後通過「產品」：

SELECT 
    brid, 
    count(product) as amount, 
    product, 
    sum(price) AS price 
FROM `products` 
WHERE 
    brid IN (SELECT brid FROM membership) 
AND 
    cancelled is null 
GROUP BY brid, product 
WITH ROLLUP 

Answer 3

據我可以從你的例子明白，你需要的是inner join between membership and products on brid

拿下面的例子：

products表：

CREATE TABLE `test` (
    `price` int(11) DEFAULT NULL, 
    `product` varchar(20) DEFAULT NULL, 
    `brid` varchar(20) DEFAULT NULL, 
    `cancelled` varchar(20) DEFAULT NULL 
) 

membership表：

CREATE TABLE `membership` (
    `brid` varchar(20) DEFAULT NULL 
) 

而下面是我query，你需要：

SELECT 
    t.brid, count(t.product) as amount, 
    t.product, 
    sum(t.price) AS price 
FROM products t, membership m 
WHERE 
    t.brid = m.`brid` 
AND 
    cancelled is null 
GROUP BY product 

希望幫助！