# IsNotNullExpression
<a name="API_IsNotNullExpression"></a>

Specifies that the expression is not null.

## Contents
<a name="API_IsNotNullExpression_Contents"></a>

 ** columnName **   <a name="datazone-Type-IsNotNullExpression-columnName"></a>
The name of the column.  
Type: String  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/datazone-2018-05-10/IsNotNullExpression) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/datazone-2018-05-10/IsNotNullExpression) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/datazone-2018-05-10/IsNotNullExpression)