How To Fix SDDL_PARSER_MSG307 - RIGHT OUTER JOIN is not supported with WITH HIERARCHY clause

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 307

• Message text: RIGHT OUTER JOIN is not supported with WITH HIERARCHY clause

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG307 - RIGHT OUTER JOIN is not supported with WITH HIERARCHY clause ?

  The SAP error message SDDL_PARSER_MSG307 indicates that there is an issue with the SQL query you are trying to execute, specifically when using a RIGHT OUTER JOIN in conjunction with the WITH HIERARCHY clause. This error typically arises in the context of SAP BW (Business Warehouse) or SAP HANA when dealing with queries that involve hierarchies.
  Cause:
  The error occurs because the SQL syntax or the logic of the query does not support the combination of a RIGHT OUTER JOIN with the WITH HIERARCHY clause. In many SQL dialects, including those used in SAP, certain types of joins are not compatible with hierarchical data structures. The RIGHT OUTER JOIN is often used to return all records from the right table and the matched records from the left table, but when hierarchies are involved, the structure of the data can complicate this operation.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Change the Join Type: If possible, modify the query to use a LEFT OUTER JOIN instead of a RIGHT OUTER JOIN. This is often a straightforward solution that maintains the integrity of the data you are trying to retrieve.
  
  
  Rearrange the Query: If changing the join type is not feasible, consider restructuring your query. You might be able to achieve the same results by rearranging the tables or using subqueries.
  
  
  Remove the WITH HIERARCHY Clause: If the hierarchy is not essential for your query, you can try removing the WITH HIERARCHY clause. However, this may not be suitable if you need hierarchical data.
  
  
  Use Alternative Methods: If you need to work with hierarchical data and require a RIGHT OUTER JOIN, consider using Common Table Expressions (CTEs) or temporary tables to first prepare the data without the hierarchy and then join it afterward.
  
  
  Consult Documentation: Check the SAP documentation for any specific guidelines or limitations regarding the use of joins with hierarchical data. There may be specific recommendations or best practices for your version of SAP.
  
  
  Related Information:
  
  SAP Notes and Knowledge Base Articles: Look for SAP Notes related to SDDL_PARSER_MSG307 for any patches or updates that may address this issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  SQL Syntax Reference: Familiarize yourself with the SQL syntax and capabilities of the specific SAP database you are using (e.g., HANA SQL, BW Query Designer) to understand the limitations and best practices.
  
  By following these steps, you should be able to troubleshoot and resolve the error effectively.