How To Fix RS2HANA_CHECK139 - SQL AP with subselect: Yes

SAP Error Message - Details

• Message type: E = Error

• Message class: RS2HANA_CHECK - RS2HANA Check Report

• Message number: 139

• Message text: SQL AP with subselect: Yes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS2HANA_CHECK139 - SQL AP with subselect: Yes ?

  The SAP error message RS2HANA_CHECK139 typically occurs in the context of SAP BW (Business Warehouse) when working with HANA as a database. This error is related to the use of subselects in SQL queries, which can lead to performance issues or may not be supported in certain contexts.
  Cause:
  The error message RS2HANA_CHECK139 indicates that the SQL query being executed contains a subselect, which is not allowed or is causing issues in the context of the HANA database. Subselects can lead to inefficient execution plans or may not be optimized for HANA's in-memory processing capabilities.
  Solution:
  To resolve this error, consider the following approaches:
  
  
  Rewrite the Query: Instead of using a subselect, try to rewrite the query using JOINs or Common Table Expressions (CTEs). This can help improve performance and compatibility with HANA.
  
  
  Check Query Design: Review the design of your query in the BW query designer. Ensure that you are not inadvertently using subselects in calculated fields or restricted key figures.
  
  
  Use HANA-Optimized Queries: If you are using BW on HANA, ensure that your queries are optimized for HANA. This may involve using specific BW objects that are designed to work efficiently with HANA.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional guidance or updates regarding this error. SAP frequently releases updates that may address specific issues.
  
  
  Performance Tuning: If the query is complex, consider breaking it down into simpler components or using aggregation to reduce the amount of data processed in a single query.
  
  
  Testing: After making changes, test the query thoroughly to ensure that it returns the expected results without errors.
  
  
  Related Information:
  
  SAP BW on HANA: Understanding how BW interacts with HANA can provide insights into optimizing queries and avoiding common pitfalls.
  SQL Performance Tuning: Familiarize yourself with best practices for SQL performance tuning, especially in the context of HANA.
  SAP Community and Forums: Engaging with the SAP community can provide additional insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying these solutions, consider reaching out to SAP support for further assistance.