Which node uses a special configuration table to optimize performance?

The Union node utilizes a special configuration table to optimize performance. In the context of SAP HANA, the Union node is responsible for merging tables or result sets that have the same structure. The configuration table that it uses helps to define how to handle these merges efficiently. This optimization allows the Union node to process data in a more streamlined manner, improving overall performance by reducing the computational load and ensuring that the data integration process is efficient and effective.

The significance of this capability lies in its ability to enhance the speed and efficiency of queries, especially when dealing with large datasets where multiple sources need to be combined. This optimization is crucial in real-time analytics environments, which SAP HANA is designed to support.