📌  相关文章
📜  双向外连接sql代码示例

📅  最后修改于: 2022-03-11 15:05:29.539000             🧑  作者: Mango

代码示例1
SELECT *
FROM A LEFT JOIN B ON A.id = B.id
UNION ALL
SELECT *
FROM A RIGHT JOIN B ON A.id = B.id
WHERE A.id IS NULL