# Fold an array[¶](https://doc.dataiku.com/dss/latest/preparation/processors/array-fold.html#fold-an-array "Permalink to this headline")

This processor takes a column containing arrays (in JSON) and transforms the array into several rows.

Each generated row contains a single value from the input array. All other columns are copied in each generated row.

For more details on reshaping, please see Reshaping.
