public java.util.List<Option> getSelectedColumns() {
        return selectedColumns;
    }
<p>
The list of column names used to determine a matching record when doing a MERGE or APPEND with upsert.
</p>

@return The list of column names used to determine a matching record when doing a MERGE or APPEND with upsert.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/AmazonRedshiftNodeData.java