# SUMARRAYLONG

Computes the element-wise sum of long arrays across all rows in a group. All input arrays are treated as having the same length; shorter arrays are padded with zeros.

## Signature

> SUMARRAYLONG(colName)

The input column must be a multi-value or array column of type LONG.

## Usage Examples

```sql
select SUMARRAYLONG(longArrayCol) AS value
from myTable
```

| value            |
| ---------------- |
| \[100, 200, 300] |