How To Fix SDDL_PARSER_MSG022 - obsolete: $$EXTENSION and GROUP BY are not valid together

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 022

• Message text: obsolete: $$EXTENSION and GROUP BY are not valid together

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG022 - obsolete: $$EXTENSION and GROUP BY are not valid together ?

  The SAP error message SDDL_PARSER_MSG022 indicates that there is an issue with the use of the $$EXTENSION keyword in conjunction with a GROUP BY clause in a query. This error typically arises in the context of SAP's Semantic Data Definition Language (SDDL) or when working with certain data models in SAP systems.
  Cause:
  The error occurs because the $$EXTENSION keyword is not compatible with the GROUP BY clause. In SQL and similar query languages, GROUP BY is used to aggregate data based on specified columns, while $$EXTENSION is often used to extend or modify the behavior of a query. When these two are used together, the system cannot process the request correctly, leading to the error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Query: Check the SQL or SDDL query that is causing the error. Look for the use of $$EXTENSION and GROUP BY in the same statement.
  
  
  Remove Incompatibility: If possible, remove the $$EXTENSION keyword from the query if it is not necessary. Alternatively, consider restructuring the query to avoid using both together.
  
  
  Use Subqueries: If you need to use both functionalities, consider breaking the query into subqueries. First, perform the aggregation with GROUP BY in one query, and then apply the $$EXTENSION in a subsequent query.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources for the specific version of the system you are using. There may be specific guidelines or best practices for using $$EXTENSION and GROUP BY.
  
  
  Test Changes: After making adjustments to the query, test it to ensure that it runs without errors and returns the expected results.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Community Forums: Engage with SAP community forums or user groups. Other users may have encountered the same issue and can provide insights or solutions.
  Performance Considerations: When restructuring queries, consider the performance implications of using subqueries or changing the aggregation logic.
  
  By following these steps, you should be able to resolve the error and successfully execute your query.