Question

我现在一直在使用此查询，而且我很难过。我是SQL的新手，我无法弄清楚我收到错误的原因：

SELECT customer_number, first_name_initial, last_name,serve_address_1, serve_address_2, serve_city, serve_state, route_serve_zip_code, phone_number1, referral_code
FROM customer_master 
INNER JOIN route_detail 
ON m.customer_number=r.customer_number
WHERE (referral_code='american')

ERROR

Msg 209，Level 16，State 1，Line 1 不明确的列名称＆＃39; customer_number＆＃39;。 Msg 209，Level 16，State 1，Line 1 不明确的列名称＆＃39; phone_number1＆＃39;。

我尝试按如下方式添加列，但也没有运气。任何帮助将不胜感激！

SELECT customer_number, first_name_initial, last_name,serve_address_1, serve_address_2, serve_city, serve_state, route_serve_zip_code, phone_number1, referral_code
FROM customer_master m
INNER JOIN route_detail r
ON m.customer_number=r.customer_number
WHERE (referral_code='american')

Answer 1

问题在于这一行

SELECT customer_number

您需要指定从哪个表中获取customer_number，如下所示：

SELECT r.customer_number

或

SELECT m.customer_number

所以你的最终查询看起来像这样：

SELECT r.customer_number, --or m.customer_number
first_name_initial, last_name,serve_address_1, serve_address_2, serve_city, serve_state, route_serve_zip_code, phone_number1, referral_code
FROM customer_master 
INNER JOIN route_detail 
ON m.customer_number=r.customer_number
WHERE (referral_code='american')

在SQL中使用2个不明确的列名查询错误

1 个答案: