1、完整response：
Error Code: 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 ' full join (Orders o) on p.Id_p=o.Id_P LIMIT 0, 1000' at line 2

2、两个表：

Orders：

Id_O, OrderNo, Id_P

'3', '22456', '1'
'4', '24562', '1'
'2', '44678', '3'
'1', '77895', '3'
'5', '34764', '65'

Persons：

Id_p, LastName, FirstName, Address, City

'1', 'Adams', 'John', 'Oxford-Street', 'London'
'2', 'Bush', 'George', 'Fifth-Avenue', 'NewYork'
'3', 'Carter', 'Thomas', 'Changan-Street', 'Beijing'

3、查询语句：

select (p.FirstName, FirstName),(p.LastName, LastName),(o.OrderNo ,OrderNo)
from (Persons p)

full join (Orders o)
on p.Id_p=o.Id_P;

问题：
19:39:32 select (p.FirstName, FirstName),(p.LastName, LastName),(o.OrderNo ,OrderNo)
from (Persons p)

full join (Orders o)

on p.Id_p=o.Id_P
LIMIT 0, 1000

Error Code: 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 ' full join (Orders o) on p.Id_p=o.Id_P LIMIT 0, 1000' at line 2 0.00031 sec

mysql 不支持 FULL JOIN 用left join 或 right join 或者直接用笛卡儿积