This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::QuickSight::DataSet CastColumnTypeOperation
<a name="aws-properties-quicksight-dataset-castcolumntypeoperation"></a>

A transform operation that casts a column to a different type.

## Syntax
<a name="aws-properties-quicksight-dataset-castcolumntypeoperation-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-quicksight-dataset-castcolumntypeoperation-syntax.json"></a>

```
{
  "[ColumnName](#cfn-quicksight-dataset-castcolumntypeoperation-columnname)" : String,
  "[Format](#cfn-quicksight-dataset-castcolumntypeoperation-format)" : String,
  "[NewColumnType](#cfn-quicksight-dataset-castcolumntypeoperation-newcolumntype)" : String,
  "[SubType](#cfn-quicksight-dataset-castcolumntypeoperation-subtype)" : String
}
```

### YAML
<a name="aws-properties-quicksight-dataset-castcolumntypeoperation-syntax.yaml"></a>

```
  [ColumnName](#cfn-quicksight-dataset-castcolumntypeoperation-columnname): String
  [Format](#cfn-quicksight-dataset-castcolumntypeoperation-format): String
  [NewColumnType](#cfn-quicksight-dataset-castcolumntypeoperation-newcolumntype): String
  [SubType](#cfn-quicksight-dataset-castcolumntypeoperation-subtype): String
```

## Properties
<a name="aws-properties-quicksight-dataset-castcolumntypeoperation-properties"></a>

`ColumnName`  <a name="cfn-quicksight-dataset-castcolumntypeoperation-columnname"></a>
Column name.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `127`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Format`  <a name="cfn-quicksight-dataset-castcolumntypeoperation-format"></a>
When casting a column from string to datetime type, you can supply a string in a format supported by Quick Sight to denote the source data format.  
*Required*: No  
*Type*: String  
*Minimum*: `0`  
*Maximum*: `32`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NewColumnType`  <a name="cfn-quicksight-dataset-castcolumntypeoperation-newcolumntype"></a>
New column data type.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `STRING | INTEGER | DECIMAL | DATETIME`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SubType`  <a name="cfn-quicksight-dataset-castcolumntypeoperation-subtype"></a>
The sub data type of the new column. Sub types are only available for decimal columns that are part of a SPICE dataset.  
*Required*: No  
*Type*: String  
*Allowed values*: `FLOAT | FIXED`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)