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

# IndexMetadata

> <a href="https://github.com/pixeltable/pixeltable/blob/main/pixeltable/catalog/table_metadata.py#L52" id="viewSource" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/View%20Source%20on%20Github-blue?logo=github&labelColor=gray" alt="View Source on GitHub" style={{ display: 'inline', margin: '0px' }} noZoom /></a>

# <span style={{ 'color': 'gray' }}>class</span>  pixeltable.IndexMetadata

Metadata for an index on a Pixeltable table.

## <span style={{ 'color': 'gray' }}>attr</span>  columns

```
columns: list[str]
```

The table columns that are indexed.

## <span style={{ 'color': 'gray' }}>attr</span>  index\_type

```
index_type: Literal['embedding', 'btree']
```

The type of index. New types may be added in the future.

## <span style={{ 'color': 'gray' }}>attr</span>  name

```
name: str
```

The name of the index.

## <span style={{ 'color': 'gray' }}>attr</span>  parameters

```
parameters: EmbeddingIndexParams | None
```

Parameters specific to the index type. `None` for index types without parameters.