专栏＆＃39; registry_num＆＃39;很暧昧

Question

这是我的代码，但registry_num不明确的错误。此外，当我摆脱registry_num时，结果只返回我的违规者表中的数据。

select first_name, last_name, address1,
  address2, city, state,
  start_date, end_date, registry_num
from offenders left outer join addresses
on address1 = 'disney' or 'cruise';

Answer 1

这主要是猜测，但根据你得到的错误，（更多）正确的版本可能是：

    Select o.registry_num
         , o.first_name
         , o.last_name
         , a.address1
         , a.address2
         , a.city
         , a.state
         , o.start_date
         , o.end_date
      From offenders o
 Left join addresses a
        On a.registry_num = o.registry_num
     Where a.address1 in ( 'disney', 'cruise')
         ;