Запросите таблицы SQL с MAX Date и GROUP_CONCAT для одного и того же запроса - PullRequest
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Запросите таблицы SQL с MAX Date и GROUP_CONCAT для одного и того же запроса

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/ 12 февраля 2019

Я пытаюсь экспортировать результат запроса для данных клиента из базы данных Zen Cart.

Мой исходный запрос дает некоторые результаты. 

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

Однако значения o.date_purchased былине уступил самой последней дате заказа клиента (вместо этого он дал случайные даты заказа клиента, если их больше одного).

Итак, я попытался использовать max(date) ... Но, когда я попыталсясделай это.Время ожидания истекло. 

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)

Хотя это приводит к ошибке #1111 - Invalid use of group function. 

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)

Я пытался самостоятельно устранить неполадки, но не могу точно определить, где находится действительный showtopper....

Вот схема таблиц, связанная с таблицей, используемой для этого запроса.https://pastebin.com/UeQGpeaF

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