# Merge
<a name="API_Merge"></a>

Specifies a transform that merges a `DynamicFrame` with a staging `DynamicFrame` based on the specified primary keys to identify records. Duplicate records (records with the same primary keys) are not de-duplicated. 

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

 ** Inputs **   <a name="Glue-Type-Merge-Inputs"></a>
The data inputs identified by their node names.  
Type: Array of strings  
Array Members: Fixed number of 2 items.  
Pattern: `[A-Za-z0-9_-]*`   
Required: Yes

 ** Name **   <a name="Glue-Type-Merge-Name"></a>
The name of the transform node.  
Type: String  
Pattern: `([^\r\n])*`   
Required: Yes

 ** PrimaryKeys **   <a name="Glue-Type-Merge-PrimaryKeys"></a>
The list of primary key fields to match records from the source and staging dynamic frames.  
Type: Array of arrays of strings  
Pattern: `([\u0009\u000B\u000C\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF])*`   
Required: Yes

 ** Source **   <a name="Glue-Type-Merge-Source"></a>
The source `DynamicFrame` that will be merged with a staging `DynamicFrame`.  
Type: String  
Pattern: `[A-Za-z0-9_-]*`   
Required: Yes

## See Also
<a name="API_Merge_SeeAlso"></a>

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/glue-2017-03-31/Merge) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/glue-2017-03-31/Merge) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/glue-2017-03-31/Merge)