# Nest columns[¶](https://doc.dataiku.com/dss/latest/preparation/processors/object-nest.html#nest-columns "Permalink to this headline")

This processor combines N input columns into a single JSON object column.

## Example[¶](https://doc.dataiku.com/dss/latest/preparation/processors/object-nest.html#example "Permalink to this headline")

* Input:

§ a       b

§ 1       2

* Output:

§ {"a": 1, "b": 2}
