# Select columns

Select a subset of columns from a transform table. This can improve performance for tables with many columns.

## Input type

Transform table

## Output type

Transform table

## Usage information

| Functionality | Availability |
| --- | --- |
| [Standard Quiver card](../core-concepts/index.md#cards) | Unsupported |
| [Transform table transform](../cards-transform-table/index.md) | Supported |