> ## Documentation Index
> Fetch the complete documentation index at: https://docs.anlytic.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CumulativeSum

Calculates the cumulative sum of values from the first row up to the current row within a partition.

**Category:** `window`

**Syntax:**

```
CumulativeSum([column])
```

**Returns:** `Same as input type`

**Context Filtering:** ✓ Yes

## Parameters

| Name     | Type     | Required | Description                                        |
| -------- | -------- | -------- | -------------------------------------------------- |
| `column` | `column` | ✓ Yes    | The numeric column to calculate cumulative sum for |

**Allowed Column Types for `column`:** INT, FLOAT, DECIMAL, NUMBER

## Validation

* Minimum parameters: 1
* Maximum parameters: 1

## Examples

```
CumulativeSum([Sales])
```

Returns the running total of sales from the first row to the current row.

```
CumulativeSum([Revenue])
```

Calculates cumulative revenue, useful for tracking year-to-date totals or running totals over time.

## Related Functions

* [CumulativeAvg](cumulativeavg) - Calculates cumulative average
* [MovingSum](movingsum) - Calculates moving sum with a window
* [Sum](../aggregate/sum) - Returns the overall sum
* [RunningTotal](runningtotal) - Calculates running total