Question

我有以下mysql查询：

  SELECT order_id, CONCAT(firstname, ' ', lastname) AS customer, shipping_code, total, currency_code, currency_value, date_added, date_modified FROM oc_order` o LEFT JOIN (select komercijalista from oc_customer (order.customer_id = customer.customer_id))

我试图在komercijalista表中列出oc_customer字段（属于oc_order表）中的值。我试图通过两者都具有的customer_id连接它们，但是我在左连接处失败。有什么建议吗？除了更好地学习mysql之外，我已经在尝试这样做，这是我需要您帮助的地方。谢谢。

Answer 1

SELECT o.order_id, CONCAT(o.firstname, ' ', o.lastname) AS customer, o.shipping_code, o.total, o.currency_code, o.currency_value, o.date_added, o.date_modified ,b.komercijalista FROM `oc_order` o left join (select komercijalista from oc_customer) b on o.order_id = b.customer.order_id

尝试

Answer 2

感谢@ p.ganesh，我设法弄清楚如何编写查询。万一有人需要，这里是解决方案：

SELECT order_id, CONCAT(firstname, ' ', lastname) AS customer, shipping_code, total, currency_code, currency_value, date_added, date_modified FROM oc_order` o LEFT JOIN (select komercijalista from oc_customer (order.customer_id = customer.customer_id))

MySQL查询列出从一个表到另一个表的字段值

2 个答案: