mysql：使用Join更新

Question

company contains id,company_name

company_alias contains id,company_id,company_alias

company_rawdata contains id,complaint descrption,company_match

我正在尝试使用company_name更新company_match，其中company descrption包含别名。

 update company_rawdata cr inner join company c on c.company_name 
 like concat('',cr.complaint_descrption,'') set cr.matched_company = c.company_name

Answer 1

UPDATE company_rawdata r
INNER JOIN company_alias a ON a.company_alias = r.description
INNER JOIN company c ON c.id = a.company_id
SET r.company_match = c.company_name 

或者，如果a.company_alias包含在a.company_alias中的某个地方，则以下内容：

UPDATE company_rawdata r
INNER JOIN company_alias a ON a.company_alias LIKE CONCAT('%', r.description, '%')
INNER JOIN company c ON c.id = a.company_id
SET r.company_match = c.company_name 

Answer 2

试试：

 UPDATE company c
 INNER JOIN company_alias a ON a.company_id = c.id
 INNER JOIN company_rawdata r ON a.company_alias = r.company_match
 SET r.company_match = c.company_name