Question

我有2个表格order_management和order_management2几乎相同... order_id order_management 自动递增其中{ {1}}中{1}}没有。我想根据order_id合并两个表中每个字段的数据。

假设，

order_management table

order_management2

order_management2表

order_id

如果两个表的order_id customer_name fone no. -------- ------------- --------- 1 A 89000 2 B 78989 3 C 56464为order_id customer_name fone no. ---------- --------------- ---------- 2 D 89076 3 E 67598 4 F 67545，那么它应显示为：

order_id

怎么做？

Answer 1

SELECT order_id,GROUP_CONCAT(customer_name SEPARATOR ',')as customer_name,
GROUP_CONCAT(`fone no.` SEPARATOR ',')as `fone no.` 
FROM order_management o JOIN order_management2 o2 
ON o.order_id=o2.order_id GROUP BY o.order_id

Answer 2

这个对我有用：

SELECT
  t1.order_id,
  CONCAT(t1.customer_name, ',', t2.customer_name) AS customer_name,
  CONCAT(t1.phone, ',', t2.phone) AS phone_no
FROM order_management t1
JOIN order_management2 t2 ON t1.order_id = t2.order_id
GROUP BY t1.order_id

Answer 3

您可以尝试此查询：

SELECT order_id, GROUP_CONCAT(customer_name SEPARATOR ', ') cname, GROUP_CONCAT(fone_no SEPARATOR ', ') fno
FROM order_management o1
    LEFT JOIN order_management2 o2 ON o1.order_id = o2.order_id
GROUP BY o1.order_id

通过这个你应该收到要求的结果。

如何基于公共字段合并来自2行不同表的数据

3 个答案: