How To Fix SDDL_PARSER_MSG025 - Aggregate functions are not allowed in the WHERE condition

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 025

• Message text: Aggregate functions are not allowed in the WHERE condition

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG025 - Aggregate functions are not allowed in the WHERE condition ?

  The SAP error message SDDL_PARSER_MSG025 indicates that you are trying to use aggregate functions (like SUM, COUNT, AVG, etc.) in the WHERE clause of a SQL query. In SQL, aggregate functions are not allowed in the WHERE clause because the WHERE clause is evaluated before the aggregation takes place. Instead, you should use the HAVING clause for filtering results after aggregation.
  Cause:
  The error occurs when a query attempts to filter records based on the result of an aggregate function in the WHERE clause. For example:
  SELECT customer_id, COUNT(order_id)
  FROM orders
  WHERE COUNT(order_id) > 5
  GROUP BY customer_id;
  In this example, the COUNT(order_id) is incorrectly placed in the WHERE clause.
  Solution:
  To resolve this error, you should move the aggregate function to the HAVING clause. The HAVING clause is specifically designed to filter records after the aggregation has been performed. Here’s how you can rewrite the above query correctly:
  SELECT customer_id, COUNT(order_id)
  FROM orders
  GROUP BY customer_id
  HAVING COUNT(order_id) > 5;
  Related Information:
  
  WHERE Clause: Used to filter records before any groupings or aggregations are applied.
  HAVING Clause: Used to filter records after the aggregation has been performed.
  Aggregate Functions: Functions that perform a calculation on a set of values and return a single value (e.g., SUM, COUNT, AVG, MAX, MIN).
  
  Best Practices:
  
  Always use the HAVING clause for conditions that involve aggregate functions.
  Use the WHERE clause for filtering individual records before aggregation.
  Ensure that your SQL queries are structured correctly to avoid such errors.
  
  By following these guidelines, you can avoid the SDDL_PARSER_MSG025 error and write more effective SQL queries in SAP.