# SHUFFLE\$1ROWS


Shuffles values in a given column. The shuffling can occur with values grouped by a secondary column.

**Parameters**
+ `sourceColumns` – An array of existing columns.
+ `groupByColumns` – An array of columns to group the source columns by while shuffling.

**Example**  
  

```
{
   "sourceColumns": ["age"],
   "*groupByColumns*": ["country"]
}
```