在 mariadb 中进行连接查询的正确方法是什么?

What is the proper way to make a join query in mariadb?

我在数据库中有两个 table,companiesline_of_business,我想要从 table companies 中获取所有数据以及 table [=] 中的 line_of_business 列27=]type_of_business.

这是 table 公司的字段:

id,
company,
address,
city,
tel_number,
fax_number,
line_of_business(FRK)

这是 table line_of_business 的字段:

id,
type_of_business,
description

我尝试使用此处的引用对数据库进行查询。 http://www.w3schools.com/sql/sql_join_inner.asp,但结果是 #1054 - Unknown column 'companies.company' in 'field list',,在 table companies

中存在公司列

这是我的查询,

SELECT `companies.id`, `companies.company`, `companies.address`, `companies.city`, `companies.tel_number`, `companies.fax_number`, `companies.tax_number`, `line_of_business.type_of_business` FROM `companies` INNER JOIN `line_of_business` ON `line_of_business.id`=`companies.line_of_business`

知道进行连接查询的正确方法吗?

您可以对所有列

使用 companies.company 而不是 companies.company