特征编码
====================


## 参数

+------------------------+--------+----------+------------------+
| 名称                   | 类型   | 是否必传 | 备注             |
+------------------------+--------+----------+------------------+
| inputarg               | array  | Y        | 字段集合         |
+------------------------+--------+----------+------------------+
| inputarg.#.tbname1     | string | Y        | 表名             |
+------------------------+--------+----------+------------------+
| inputarg.#.strlist     | array  | Y        | 附加字段名称集合 |
+------------------------+--------+----------+------------------+
| inputarg.#.columnArray | array  | Y        | 字段名称集合     |
+------------------------+--------+----------+------------------+


## 返回

+--------+--------+----------+--------------------------------+
| 名称   | 类型   | 是否必传 | 备注                           |
+--------+--------+----------+--------------------------------+
| result | String | Y        | 所有输出的JSON，按节点类型解析 |
+--------+--------+----------+--------------------------------+


## 算法入口及参数

+---------+--------------------------------------+--------------+
| 名称    | 示例                                 | 备注         |
+---------+--------------------------------------+--------------+
| args[0] | tmptb2019062511473300088201          | 输入表名     |
+---------+--------------------------------------+--------------+
| args[1] | result                               | 需要编码的列 |
+---------+--------------------------------------+--------------+
| args[2] | sepal_length,sepal_width,petal_width | 需要附加的列 |
+---------+--------------------------------------+--------------+
| args[3] | tmptb2019062511473300088332          | 输出表名     |
+---------+--------------------------------------+--------------+