【转】mysql同一表记录某一字段内容合并

mysql> create table t(id int,name varchar(20));

Query OK, 0 rows affected (0.09 sec)

 

mysql> insert into t values (1,'aa'),(1,'bb'),(2,'cc'),(2,'dd');

Query OK, 4 rows affected (0.00 sec)

Records: 4  Duplicates: 0  Warnings: 0

 

mysql> commit;

Query OK, 0 rows affected (0.00 sec)

 

mysql> select * from t;

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

| id   | name |

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

|    1 | aa   |

|    1 | bb   |

|    2 | cc   |

|    2 | dd   |

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

4 rows in set (0.01 sec)

 

mysql> select id,GROUP_CONCAT(name) from t group by id;

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

| id   | GROUP_CONCAT(name) |

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

|    1 | aa,bb              |

|    2 | cc,dd              |

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

2 rows in set (0.00 sec)

 

转自：http://blog.csdn.net/gulang76/article/details/5589479