How To Fix SDDL_PARSER_MSG475 - UNION cannot be used in extends on projection views

SDDL_PARSER_MSG475 - Overview

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 475

• Message text: UNION cannot be used in extends on projection views

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG475 - UNION cannot be used in extends on projection views ?

  The SAP error message SDDL_PARSER_MSG475 indicates that there is an issue with the use of the UNION operator in the context of projection views in SAP HANA. This error typically arises when you attempt to create a projection view that uses a UNION operation in a way that is not supported by the projection view's definition.
  
  Cause:
  The error occurs because projection views in SAP HANA are designed to represent a single, unified view of data from one or more tables or other views. However, the use of UNION in the context of projection views is not allowed. Projection views are meant to project specific columns from a single source or a set of sources without combining rows from multiple sources using UNION.
  
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Avoid Using UNION in Projection Views:
  
  Instead of trying to use UNION within a projection view, create separate views for each of