数据库错误 - 目前不支持RIGHT和FULL OUTER JOIN

Question

我试图使用此查询右键加入两个表

SELECT Persons.firstname, company.lastname
FROM Persons
RIGHT JOIN company ON Persons.firstname=company.firstname;

出现此错误 -

目前不支持RIGHT和FULL OUTER JOIN

我们怎样摆脱这个？

注意:我使用的是Mozilla DB管理器.

Answer 1

通过做left join和切换表

SELECT Persons.firstname, company.lastname
FROM company
LEFT JOIN Persons ON Persons.firstname = company.firstname;

Answer 2

对于 FULL OUTER JOIN UNION，LEFT 和 RIGHT（再次交换 LEFT JOIN）JOIN 结果的结果...

 SELECT Persons.firstname,company.lastname FROM Persons LEFT JOIN company ON 
 Persons.firstname=company.firstname
 union 
 SELECT Persons.firstname, company.lastname FROM company LEFT JOIN Persons ON 
 Persons.firstname=company.firstname;