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# AWS::KinesisAnalyticsV2::ApplicationReferenceDataSource RecordColumn
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn"></a>

For a SQL-based Kinesis Data Analytics application, describes the mapping of each data element in the streaming source to the corresponding column in the in-application stream.

Also used to describe the format of the reference data source.

## Syntax
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-syntax"></a>

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

### JSON
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-syntax.json"></a>

```
{
  "[Mapping](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-mapping)" : String,
  "[Name](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-name)" : String,
  "[SqlType](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-sqltype)" : String
}
```

### YAML
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-syntax.yaml"></a>

```
  [Mapping](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-mapping): String
  [Name](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-name): String
  [SqlType](#cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-sqltype): String
```

## Properties
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-properties"></a>

`Mapping`  <a name="cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-mapping"></a>
A reference to the data element in the streaming input or the reference data source.  
*Required*: No  
*Type*: String  
*Minimum*: `0`  
*Maximum*: `65535`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Name`  <a name="cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-name"></a>
The name of the column that is created in the in-application input stream or reference table.  
*Required*: Yes  
*Type*: String  
*Pattern*: `[^-\s<>&]*`  
*Minimum*: `1`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SqlType`  <a name="cfn-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn-sqltype"></a>
The type of column created in the in-application input stream or reference table.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## See also
<a name="aws-properties-kinesisanalyticsv2-applicationreferencedatasource-recordcolumn--seealso"></a>
+ [RecordColumn](https://docs.amazonaws.cn/managed-flink/latest/apiv2/API_RecordColumn.html) in the *Amazon Kinesis Data Analytics API Reference*