How To Fix DB02068 - &1: Select with aggregate function returned inappropriate number of rows

SAP Error Message - Details

• Message type: E = Error

• Message class: DB02 - For Oracle Component of the Database Monitor

• Message number: 068

• Message text: &1: Select with aggregate function returned inappropriate number of rows

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB02068 - &1: Select with aggregate function returned inappropriate number of rows ?

  The SAP error message DB02068 indicates that a SQL query using an aggregate function (like SUM, COUNT, AVG, etc.) has returned an unexpected number of rows. This typically occurs when the query is expected to return a single row but instead returns multiple rows, which is not appropriate for the context in which the aggregate function is being used.
  Cause
  
  Incorrect Grouping: The SQL query may not have the correct GROUP BY clause, leading to multiple rows being returned when only one is expected.
  Subquery Issues: If the aggregate function is used in a subquery, the subquery might be returning multiple rows instead of a single value.
  Data Issues: There may be unexpected data in the database that causes the aggregate function to return multiple rows.
  Join Conditions: If the query involves joins, the join conditions might not be specific enough, resulting in multiple rows being returned.
  
  Solution
  
  
  Review the SQL Query: Check the SQL query for proper use of GROUP BY. Ensure that all non-aggregated columns in the SELECT statement are included in the GROUP BY clause.
  Example:
  SELECT column1, SUM(column2)
  FROM table
  GROUP BY column1;
  
  
  Check Subqueries: If using a subquery, ensure that it is designed to return a single value. You can use LIMIT 1 or ensure that the conditions in the subquery are restrictive enough to return only one row.
  
  
  Examine Data: Look at the data in the relevant tables to ensure that it is as expected. There may be duplicates or unexpected values that are causing the aggregate function to behave incorrectly.
  
  
  Adjust Join Conditions: If the query involves joins, make sure that the join conditions are correct and that they do not inadvertently create a Cartesian product, which can lead to multiple rows being returned.
  
  
  Use DISTINCT: If appropriate, you can use the DISTINCT keyword to ensure that duplicate rows are not counted in the aggregate function.
  
  
  Related Information
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  Database Documentation: Review the documentation for the specific database you are using (e.g., HANA, Oracle, SQL Server) for best practices on using aggregate functions and handling multiple rows.
  Testing: Test the query in a development environment with sample data to ensure that it behaves as expected before deploying it in production.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.