---
title: "select_columns: Selects a set of columns and drops all others"
description: "Selects a set of columns to retrain, dropping all others."
author: VanMSFT
ms.author: vanto
ms.date: 07/15/2019
ms.service: sql
ms.subservice: "machine-learning-services"
ms.topic: "reference"
keywords:
  - transform
  - schema
ms.devlang: python
monikerRange: ">=sql-server-2017||>=sql-server-linux-ver15"
---
# *microsoftml.select_columns*: Retains columns of a dataset





## Usage



```
microsoftml.select_columns(cols: [list, str], **kargs)
```





## Description

Selects a set of columns to retrain, dropping all others.


## Arguments


### cols

A character string or list of the names of the variables to keep.


### kargs

Additional arguments sent to compute engine.


## Returns

An object defining the transform.


## See also

[`concat`](concat.md),
[`drop_columns`](drop-columns.md).