MySQL OUTER JOIN语法错误

Question

对你们来说可能是一个facepalm，但作为一个SQL查询新手，我遇到了语法问题。谁知道什么是错的？

SELECT * FROM company C
OUTER JOIN company_address A ON C.company_id = A.company_id
WHERE A.company_id IS NULL

给出错误：

#1064 - You have an error in your SQL syntax; check the manual that corresponds 
to your MySQL server version for the right syntax to use near 
'OUTER JOIN company_address A ON C.company_id = A.company_id WHERE A.address_id 
' at line 2

Answer 1

In MySQL你应该使用LEFT OUTER JOIN或RIGHT OUTER JOIN。没有只是外部加入。如果您需要MySql you can use UNION of LEFT JOIN and RIGHT JOIN

中的FULL OUTER JOIN

Answer 2

尝试

SELECT * FROM company C
LEFT JOIN company_address A ON C.company_id = A.company_id
WHERE A.company_id IS NULL

Answer 3

您必须编写LEFT JOIN，RIGHT JOIN，INNER JOIN或FULL OUTER JOIN，而不仅仅是 OUTER JOIN 。

您的表格名称也有一个错误，像[ company C ”这样的表格的字母之间不应有空格-应该将其命名为< strong> company_C ]

我希望那会工作。。祝一切顺利！