# SUM


Returns the sum of the values from the selected source columns in a new column. Any non-number is treated as 0.

**Parameters**
+ `sourceColumns` – A JSON-encoded string representing a list of existing columns.
+ `targetColumn` – A name for the newly created column.

**Example**  
  

```
{
    "RecipeAction": {
        "Operation": "SUM",
        "Parameters": {
            "sourceColumns": "[\"age\",\"years_in_service\"]",
            "targetColumn": "SUM Column 1"
        }
    }
}
```