SQL UNION clause/operator is used to combine the results of two or more SELECT statements without returning any duplicate rows.
To use this UNION clause, each SELECT statement must have
When performing a UNION, you need to pay attention to what data it will bring. To perform UNION ALL, you need to ensure that the view is fully materialized.
To know more about SAP HANA modeling, you can refer to the SAP Guide:
SAP HANA Guide
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