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::Glue::Table SkewedInfo
<a name="aws-properties-glue-table-skewedinfo"></a>

Specifies skewed values in a table. Skewed values are those that occur with very high frequency.

## Syntax
<a name="aws-properties-glue-table-skewedinfo-syntax"></a>

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

### JSON
<a name="aws-properties-glue-table-skewedinfo-syntax.json"></a>

```
{
  "[SkewedColumnNames](#cfn-glue-table-skewedinfo-skewedcolumnnames)" : [ String, ... ],
  "[SkewedColumnValueLocationMaps](#cfn-glue-table-skewedinfo-skewedcolumnvaluelocationmaps)" : Json,
  "[SkewedColumnValues](#cfn-glue-table-skewedinfo-skewedcolumnvalues)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-glue-table-skewedinfo-syntax.yaml"></a>

```
  [SkewedColumnNames](#cfn-glue-table-skewedinfo-skewedcolumnnames): 
    - String
  [SkewedColumnValueLocationMaps](#cfn-glue-table-skewedinfo-skewedcolumnvaluelocationmaps): Json
  [SkewedColumnValues](#cfn-glue-table-skewedinfo-skewedcolumnvalues): 
    - String
```

## Properties
<a name="aws-properties-glue-table-skewedinfo-properties"></a>

`SkewedColumnNames`  <a name="cfn-glue-table-skewedinfo-skewedcolumnnames"></a>
A list of names of columns that contain skewed values.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SkewedColumnValueLocationMaps`  <a name="cfn-glue-table-skewedinfo-skewedcolumnvaluelocationmaps"></a>
A mapping of skewed values to the columns that contain them.  
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SkewedColumnValues`  <a name="cfn-glue-table-skewedinfo-skewedcolumnvalues"></a>
A list of values that appear so frequently as to be considered skewed.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)