Question

我正在尝试从Zen Cart的数据库中导出客户数据的查询结果。

我的原始查询产生了一些结果。

SELECT distinct c.customers_email_address, c.customers_lastname, c.customers_firstname, i.customers_info_date_account_created AS account_created, i.customers_info_date_of_last_logon AS last_logon, o.date_purchased last_ordered, GROUP_CONCAT(DISTINCT p.products_name ORDER BY p.products_name ASC SEPARATOR ', ') AS purchase_products
FROM customers c, orders o, customers_info i, orders_products p
WHERE c.customers_id = o.customers_id and c.customers_id = i.customers_info_id and o.date_purchased and o.orders_id = p.orders_id and o.orders_status IN (3,7)
GROUP BY c.customers_email_address ORDER BY o.date_purchased, c.customers_lastname, c.customers_firstname ASC

但是，o.date_purchased的值不是最新客户订单的日期产生的（相反，如果有多个，则它会随机生成客户的订单日期。）

因此，我尝试使用max(date) ...但是，当我尝试使用它时。这个超时了。

SELECT c.customers_email_address AS EMail, c.customers_lastname AS LastName, c.customers_firstname AS FirstName, i.customers_info_date_account_created AS AccountCreated, i.customers_info_date_of_last_logon AS LastLogon, o.date_purchased AS LastOrdered, GROUP_CONCAT(DISTINCT p.products_name ORDER BY p.products_name ASC SEPARATOR ', ') AS PurchaseProducts
FROM customers c, orders o, customers_info i, orders_products p
WHERE (c.customers_email_address, c.customers_lastname, c.customers_firstname, i.customers_info_date_account_created, i.customers_info_date_of_last_logon, max(o.date_purchased), GROUP_CONCAT(DISTINCT p.products_name ORDER BY p.products_name ASC SEPARATOR ', ')) IN (SELECT DISTINCT d.customers_email_address, d.customers_lastname, d.customers_firstname, j.customers_info_date_account_created, j.customers_info_date_of_last_logon, p.date_purchased, GROUP_CONCAT(DISTINCT q.products_name ORDER BY q.products_name ASC SEPARATOR ', ')
FROM customers d, orders p, customers_info j, orders_products q
WHERE d.customers_id = p.customers_id and d.customers_id = j.customers_info_id and o.date_purchased and p.orders_id = q.orders_id and p.orders_status IN (3,7)
GROUP BY d.customers_email_address ORDER BY p.date_purchased, d.customers_lastname, d.customers_firstname ASC)

这会导致#1111 - Invalid use of group function错误。

SELECT
        c.customers_email_address AS EMail,
        c.customers_lastname AS LastName,
        c.customers_firstname AS FirstName,
        i.customers_info_date_account_created AS AccountCreated,
        i.customers_info_date_of_last_logon AS LastLogon,
        o.date_purchased AS LastOrdered,
        p.products_name AS PurchaseProducts 
    FROM
        customers c 
    INNER JOIN
        orders o 
            ON p.orders_id = q.orders_id,
        customers_info i,
        orders_products p 
    WHERE
        (
            c.customers_email_address, c.customers_lastname, c.customers_firstname, i.customers_info_date_account_created, i.customers_info_date_of_last_logon, max(o.date_purchased), GROUP_CONCAT(DISTINCT p.products_name 
        ORDER BY
            p.products_name ASC SEPARATOR ', ')) IN (SELECT
                DISTINCT d.customers_email_address,
                d.customers_lastname,
                d.customers_firstname,
                j.customers_info_date_account_created,
                j.customers_info_date_of_last_logon,
                p.date_purchased,
                GROUP_CONCAT(DISTINCT q.products_name 
            ORDER BY
                q.products_name ASC SEPARATOR ', ') 
            FROM
                customers d 
            INNER JOIN
                orders p 
                    ON d.customers_id = p.customers_id 
            INNER JOIN
                customers_info j 
                    ON d.customers_id = j.customers_info_id 
            INNER JOIN
                orders_products q 
                    ON 1 = 1 
            WHERE
                1 = 1 
                AND 1 = 1 
                AND o.date_purchased 
                AND 1 = 1 
                AND p.orders_status IN (
                    3, 7
                ) 
            GROUP BY
                d.customers_email_address 
            ORDER BY
                p.date_purchased,
                d.customers_lastname,
                d.customers_firstname ASC)

我试图对自己进行故障排除，但我无法真正确定实际的展示排行榜所在的位置...

这里是与此查询使用的表相关的表架构。 https://pastebin.com/UeQGpeaF

在同一查询上查询具有MAX日期和GROUP_CONCAT的SQL表

0 个答案: