docs/sql-manual/sql-functions/array-functions/array-sum.md

---
{
    "title": "ARRAY_SUM",
    "language": "en"
}
---

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## array_sum
array_sum

### description

#### Syntax

```sql
T array_sum(ARRAY<T> src, Array<T> key)
T array_sum(lambda, Array<T> arr1, Array<T> arr2 ....)
```

Get the sum of all elements in an array (`NULL` values are skipped).
When the array is empty or all elements in the array are `NULL` values, the function returns `NULL`.

### example

```shell
mysql> create table array_type_table(k1 INT, k2 Array<int>) duplicate key (k1)
    -> distributed by hash(k1) buckets 1 properties('replication_num' = '1');
mysql> insert into array_type_table values (0, []), (1, [NULL]), (2, [1, 2, 3]), (3, [1, NULL, 3]);
mysql> select k2, array_sum(k2) from array_type_table;
+--------------+-----------------+
| k2           | array_sum(`k2`) |
+--------------+-----------------+
| []           |            NULL |
| [NULL]       |            NULL |
| [1, 2, 3]    |               6 |
| [1, NULL, 3] |               4 |
+--------------+-----------------+
4 rows in set (0.01 sec)

```

### keywords

ARRAY,SUM,ARRAY_SUM