> Documentation index: https://www.gooddata.ai/docs/gooddata-ui/llms.txt lists every page of these docs as Markdown.

# IPhysicalColumn

- Package: [@gooddata/sdk-model](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/index.md)
- Kind: interface
- Stability: alpha
- Source: https://github.com/gooddata/gooddata-ui-sdk/blob/rel/11.64/libs/sdk-model/src/dataSources/physicalModel.ts

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

Column of a data source table.

**Signature:**

```typescript
export interface IPhysicalColumn 
```

## Properties

| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [dataType](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumndatatype) |  | [DeclarativeColumnDataType](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.declarativecolumndatatype/index.md) | **_(ALPHA)_** |
| [defaultLabelOf?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumndefaultlabelof) |  | string | **_(ALPHA)_** _(Optional)_ Name of the column whose values this column labels. Logical model generation makes this column the default label of the attribute on that column. |
| [description?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumndescription) |  | string | **_(ALPHA)_** _(Optional)_ |
| [isNullable?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnisnullable) |  | boolean | **_(ALPHA)_** _(Optional)_ |
| [isPrimaryKey?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnisprimarykey) |  | boolean | **_(ALPHA)_** _(Optional)_ |
| [name](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnname) |  | string | **_(ALPHA)_** |
| [nullValue?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnnullvalue) |  | string | **_(ALPHA)_** _(Optional)_ |
| [referencedTableColumn?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnreferencedtablecolumn) |  | string | **_(ALPHA)_** _(Optional)_ |
| [referencedTableId?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iphysicalcolumn/index.md#iphysicalcolumnreferencedtableid) |  | string | **_(ALPHA)_** _(Optional)_ |

## Property details

### IPhysicalColumn.dataType

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
dataType: DeclarativeColumnDataType;
```

### IPhysicalColumn.defaultLabelOf

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

Name of the column whose values this column labels. Logical model generation makes this column the default label of the attribute on that column.

**Signature:**

```typescript
defaultLabelOf?: string;
```

### IPhysicalColumn.description

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
description?: string;
```

### IPhysicalColumn.isNullable

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
isNullable?: boolean;
```

### IPhysicalColumn.isPrimaryKey

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
isPrimaryKey?: boolean;
```

### IPhysicalColumn.name

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
name: string;
```

### IPhysicalColumn.nullValue

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
nullValue?: string;
```

### IPhysicalColumn.referencedTableColumn

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
referencedTableColumn?: string;
```

### IPhysicalColumn.referencedTableId

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
referencedTableId?: string;
```