# Sum

> Supported in: Batch, Faster, Streaming

Sums the specified expression.

**Expression categories:** Numeric

## Declared arguments

* **Expression:** The column to be summed.<br>*Expression\<Numeric>*

**Output type:** *Decimal | Double | Long*

## Examples

### Example 1: Base case

**Argument values:**

* **Expression:** `values`

**Given input table:**

| values |
| ----- |
| 2 |
| 4 |
| 3 |

**Outputs:** 9

***

### Example 2: Null case

**Argument values:**

* **Expression:** `values`

**Given input table:**

| values |
| ----- |
| 2 |
| *null* |
| 3 |

**Outputs:** 5

***

### Example 3: Edge case

**Argument values:**

* **Expression:** `values`

**Given input table:**

| values |
| ----- |
| 1.111111111111 |
| 1.111111111111 |

**Outputs:** 2.222222222222

***