How To Fix SDDL_PARSER_MSG155 - Different case-join expressions

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 155

• Message text: Different case-join expressions

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG155 - Different case-join expressions ?

  The SAP error message SDDL_PARSER_MSG155 indicates that there is a problem with the case-join expressions in your SAP system. This error typically arises when there are inconsistencies in the case-join definitions, which can occur in various scenarios, such as when defining data models or when working with SAP HANA views.
  Cause:
  The error is caused by the presence of different case-join expressions that are not compatible with each other. This can happen if:
  
  The case-join expressions are defined with different data types or structures.
  There are mismatches in the join conditions or the way the data is being aggregated.
  The case-join expressions are not properly aligned in terms of their logic or expected output.
  
  Solution:
  To resolve the SDDL_PARSER_MSG155 error, you can follow these steps:
  
  
  Review Case-Join Expressions: Check the case-join expressions in your data model or query. Ensure that they are consistent in terms of data types and structures.
  
  
  Align Join Conditions: Make sure that the join conditions are correctly defined and that they match the expected output. Look for any discrepancies in the logic used in the case-join expressions.
  
  
  Check Data Types: Verify that the data types of the fields being joined are compatible. If necessary, convert data types to ensure consistency.
  
  
  Simplify Expressions: If the case-join expressions are complex, consider simplifying them. Break them down into smaller parts to identify where the inconsistency lies.
  
  
  Test Incrementally: If you are making changes, test the case-join expressions incrementally to isolate the issue. This can help you identify which specific expression is causing the error.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for additional guidance on case-join expressions and best practices.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They can provide more specific guidance based on your system configuration.
  
  
  Related Information:
  
  SAP HANA Documentation: Review the official SAP HANA documentation for detailed information on case-joins and data modeling.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Training Resources: Consider taking training courses on SAP HANA and data modeling to deepen your understanding of case-joins and related concepts.
  
  By following these steps, you should be able to identify and resolve the cause of the SDDL_PARSER_MSG155 error in your SAP environment.