UNNEST_ARRAY
Unnests a column of type array into a new column. If the array contains more 
            than one value, then a row corresponding to each element is generated. This function only 
            unnests one level of an array column.
Parameters
- 
                sourceColumn— The name of an existing column. This column must be ofstructtype.
- 
                targetColumn— Name of the target column that is generated.
Example
{ "RecipeAction": { "Operation": "UNNEST_ARRAY", "Parameters": { "sourceColumn": "address", "targetColumn": "address" } } }