> ## 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.

# CumeDist

Calculates the cumulative distribution of a value within a partition, representing the relative position of each row based on the specified column's values.

**Category:** `window`

**Syntax:**

```
CumeDist([column])
```

**Returns:** `Float`

**Context Filtering:** ✗ No

## Parameters

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

## Validation

* Minimum parameters: 1
* Maximum parameters: 1

## Examples

```
CumeDist([Sales])
```

Returns the cumulative distribution of sales values. If 80% of rows have sales values less than or equal to the current row's sales, this returns 0.8.

```
CumeDist([Score])
```

Calculates what fraction of all scores are less than or equal to each row's score. A result of 0.95 means the row is in the 95th percentile.
**Result:** `varies` (values between 0.0 and 1.0)

## Related Functions

* [PercentRank](percentrank) - Calculates relative rank as percentage
* [Rank](rank) - Assigns rank with gaps
* [DenseRank](denserank) - Assigns rank without gaps
* [RowNumber](rownumber) - Assigns sequential row numbers
* [Ntile](ntile) - Divides rows into groups