我有一个表,使用3个外键到其他表.当我执行左连接时,我会收到重复的列.

MySQL表示,USING语法将减少重复的列,但没有多个键的示例.

鉴于：

mysql> describe recipes;

+------------------+------------------+------+-----+---------+-------+

| Field | Type | Null | Key | Default | Extra |

+------------------+------------------+------+-----+---------+-------+

| ID_Recipe | int(11) | NO | PRI | NULL | |

| Recipe_Title | char(64) | NO | | NULL | |

| Difficulty | int(10) unsigned | NO | | NULL | |

| Elegance | int(10) unsigned | NO | | NULL | |

| Quality | int(10) unsigned | NO | | NULL | |

| Kitchen_Hours | int(10) unsigned | NO | | NULL | |

| Kitchen_Minutes | int(10) unsigned | NO | | NULL | |

| Total_Hours | int(10) unsigned | NO | | NULL | |

| Total_Minutes | int(10) unsigned | NO | | NULL | |

| Serving_Quantity | int(10) unsigned | NO | | NULL | |

| Description | varchar(128) | NO | | NULL | |

| ID_Prep_Text | int(11) | YES | | NULL | |

| ID_Picture | int(11) | YES | | NULL | |

| Category | int(10) unsigned | NO | | NULL | |

| ID_Reference | int(11) | YES | | NULL | |

+------------------+------------------+------+-----+---------+-------+

15 rows in set (0.06 sec)

mysql> describe recipe_prep_texts;

+------------------+---------------+------+-----+---------+-------+

| Field | Type | Null | Key | Default | Extra |

+------------------+---------------+------+-----+---------+-------+

| ID_Prep_Text | int(11) | NO | PRI | NULL | |

| Preparation_Text | varchar(2048) | NO | | NULL | |

+------------------+---------------+------+-----+---------+-------+

2 rows in set (0.02 sec)

mysql> describe recipe_prep_texts;

+------------------+---------------+------+-----+---------+-------+

| Field | Type | Null | Key | Default | Extra |

+------------------+---------------+------+-----+---------+-------+

| ID_Prep_Text | int(11) | NO | PRI | NULL | |

| Preparation_Text | varchar(2048) | NO | | NULL | |

+------------------+---------------+------+-----+---------+-------+

2 rows in set (0.02 sec)

mysql> describe mp_references;

+--------------+---------+------+-----+---------+-------+

| Field | Type | Null | Key | Default | Extra |

+--------------+---------+------+-----+---------+-------+

| ID_Reference | int(11) | NO | PRI | NULL | |

| ID_Title | int(11) | YES | | NULL | |

| ID_Category | int(11) | YES | | NULL | |

+--------------+---------+------+-----+---------+-------+

3 rows in set (0.00 sec)

我的查询语句：

SELECT *

FROM Recipes

LEFT JOIN (Recipe_Prep_Texts, Recipe_Pictures, mp_References)

ON (

Recipe_Prep_Texts.ID_Prep_Text = Recipes.ID_Prep_Text AND

Recipe_Pictures.ID_Picture = Recipes.ID_Picture AND

mp_References.ID_Reference = Recipes.ID_Reference

);

我的目标是从连接中获取一行不含重复列的所有列.我使用MySQL C连接器发送SQL语句并检索结果集.我相信C连接器有重复列名的问题.

那么我应该使用什么是SQL语句语法？