Mysql fieds列表错误

Question

我有一个mysql查询，但是当我正在尝试向我显示该错误时

'字段列表'中的未知列'ps_address.phone_mobile'

Mysql查询

SELECT
ps_orders.id_customer,
ps_customer.firstname,
ps_customer.lastname,
ps_customer.email,
ps_orders.total_paid,
ps_orders.date_add,
ps_address.phone_mobile
FROM
ps_orders JOIN ps_customer on  ps_orders.id_customer = ps_customer.id_customer
WHERE ps_address.id_customer=ps_orders.id_customer and
ps_orders.total_paid > 1 
AND ps_orders.id_customer IN (
SELECT
ps_orders.id_customer
FROM
ps_orders
GROUP BY
ps_orders.id_customer
HAVING
COUNT(1) < 2
  )

Answer 1

您需要指定您选择FROM的表格。因此，如果列存在，这是更新的查询（缩写）：

SELECT
    ps_orders.id_customer,
    ps_customer.firstname,
    ps_customer.lastname,
    ps_customer.email,
    ps_orders.total_paid,
    ps_orders.date_add,
    ps_address.phone_mobile
FROM
    ps_address, ps_orders
JOIN
   ps_customer on ps_orders.id_customer = ps_customer.id_customer
WHERE
   ps_address.id_customer=ps_orders.id_customer AND
   ps_orders.total_paid > 1 AND 
   ps_orders.id_customer IN (...)

Answer 2

  

该列确实不存在？

您的脚本有语法错误。

中的列名“1”并不存在

  

COUNT（1）＆lt; 2

必须为： COUNT（ column_name ）＆lt; 2 或 COUNT（*）＆lt; 2

COUNT（ps_orders.id_customer）＆lt; 2

Answer 3

此语法错误表示您在此表“ps_address”中没有此列“phone_mobile”。