[英]MySQL - get users and their orders data from two tables correctly
我有这种结构的用户和订单表(简化问题):
USERS
用户身份
ownerid(用户所有者ID,与主用户一样)
公司
命令
ID
日期(订单下达日期)
用户身份
总
我需要让所有用户与一个所有者相关(ownerid,例如52,例如),他们在选定的时间段内下订单,作为带有一些字段的数组(参见查询)。 不幸的是,我的请求给出了一个(不是数组)而不是当前结果(有时甚至在所有字段中都为null)。 这是我的要求:
SELECT
ei_users.userid as id,
ei_users.company as company,
ei_users.city as city,
ei_users.user_type as user_type,
ei_users.registered as registered,
count(ei_orders.id) AS orders,
sum(ei_orders.total) AS revenue
FROM
ei_orders,
ei_users
WHERE
ei_users.userid = ei_orders.user_id
&& ei_users.ownerid = 52
&& DATE_FORMAT(ei_orders.date, "%b") = "Apr"
&& DATE_FORMAT(ei_orders.date, "%Y") = "2019"
请告诉我我的请求有什么问题以及为什么我没有获得结果数组?
我发现了我的错误,我忘了在最后添加GROUP BY ei_users.userid :
SELECT
ei_users.userid as id,
ei_users.company as company,
ei_users.city as city,
ei_users.user_type as user_type,
ei_users.registered as registered,
count(ei_orders.id) AS orders,
sum(ei_orders.total) AS revenue
FROM
ei_orders,
ei_users
WHERE
ei_users.userid = ei_orders.user_id
&& ei_users.ownerid = 52
&& DATE_FORMAT(ei_orders.date, "%b") = "Apr"
&& DATE_FORMAT(ei_orders.date, "%Y") = "2019"
GROUP BY ei_users.userid
看起来我忘了在最后添加:
GROUP BY ei_users.userid
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