How To Fix SDDL_PARSER_MSG027 - The HAVING condition can only contain columns from the GROUP BY list

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 027

• Message text: The HAVING condition can only contain columns from the GROUP BY list

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG027 - The HAVING condition can only contain columns from the GROUP BY list ?

  The SAP error message SDDL_PARSER_MSG027 indicates that there is an issue with the SQL query you are trying to execute, specifically related to the HAVING clause. This error occurs when the HAVING condition references columns that are not included in the GROUP BY list. 
  Cause:
  In SQL, when you use the GROUP BY clause to aggregate data, the HAVING clause is used to filter the results of the aggregation. However, the HAVING clause can only reference columns that are either part of the GROUP BY clause or aggregate functions (like SUM(), COUNT(), etc.). If you try to reference a column in the HAVING clause that is not part of the GROUP BY list, you will encounter this error.
  Example:
  Consider the following SQL query:
  SELECT department, COUNT(employee_id) AS employee_count
  FROM employees
  GROUP BY department
  HAVING employee_count > 10 AND salary > 50000;
  In this example, salary is not included in the GROUP BY clause, which will trigger the error.
  Solution:
  To resolve this error, you need to ensure that all columns referenced in the HAVING clause are either included in the GROUP BY clause or are aggregate functions. Here are a couple of ways to fix the issue:
  
  
  Add the column to the GROUP BY clause (if appropriate):
  SELECT department, salary, COUNT(employee_id) AS employee_count
  FROM employees
  GROUP BY department, salary
  HAVING employee_count > 10 AND salary > 50000;
  
  
  Use aggregate functions in the HAVING clause:
  If you want to filter based on an aggregate value, you can use an aggregate function:
  SELECT department, COUNT(employee_id) AS employee_count
  FROM employees
  GROUP BY department
  HAVING employee_count > 10 AND AVG(salary) > 50000;
  
  
  Related Information:
  
  GROUP BY Clause: Used to group rows that have the same values in specified columns into summary rows.
  HAVING Clause: Used to filter records that work on summarized GROUP BY results.
  Aggregate Functions: Functions like SUM(), COUNT(), AVG(), MAX(), and MIN() that perform a calculation on a set of values and return a single value.
  
  By ensuring that your HAVING clause only references columns that are either in the GROUP BY list or are aggregate functions, you can avoid this error and successfully execute your SQL query.