标签:from left join token 使用 table span operator const ken
FULL OUTER JOIN:
SELECT column_name(s)
FROM table1
FULL OUTER JOIN table2
ON table1.column_name=table2.column_name;
Mysql中可以使用UNION,同时联合LEFT JOIN 与RIGHT JOIN,如:
SELECT column_name(s) FROM table1 LEFT JOIN table2 ON table1.name = table2.name
UNION
SELECT column_name(s) FROM table1 RIGHT JOIN table2 ON table1.name =table2.name;
标签:from left join token 使用 table span operator const ken
原文地址:https://www.cnblogs.com/holiphy/p/13221110.html