mysql 在查询语句返回的列中包含一列表示该条记录在整个结果集中的行号

表名为：biao1

数据为:

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

| articleid | fullflag |

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

| 1 | 1 |

| 2 | 2 |

| 3 | 3 |

| 4 | 4 |

| 5 | 5 |

| 109 | 109 |

| 6 | 6 |

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

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

要返回这样的结果

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

| rownum | articleid | fullflag |

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

| 1 | 1 | 1 |

| 2 | 2 | 2 |

| 3 | 3 | 3 |

| 4 | 4 | 4 |

| 5 | 5 | 5 |

| 6 | 109 | 109 |

| 7 | 6 | 6 |

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

语句为： 先设置变量 set @hanghao=0

select * from (select (@hanghao:=@hanghao+1)as rownum,articleid,fullflag from biao1)as aa;