我在MySQL的联合两个子查询中遇到问题,例如
(select * from table1 where id = 1 group by f1) a1
join
(select * from table2 where id = 2 group by f2) a2 ON a1.f3 = a2.f3;
错误1064(42000):您的SQL语法有错误;查看与您的MySQL服务器版本对应的手册,以便在第1行“join(select * from table1 where id = 2)”附近使用正确的语法
我的语法不正确吗?
答案 0 :(得分:2)
查看一些示例
SELECT * FROM table1, table2;
SELECT * FROM table1 INNER JOIN table2 ON table1.id=table2.id;
SELECT * FROM table1 LEFT JOIN table2 ON table1.id=table2.id;
SELECT * FROM table1 LEFT JOIN table2 USING (id);