How To Fix SDDL_PARSER_MSG282 - $$projection not permitted in having clause

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 282

• Message text: $$projection not permitted in having clause

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG282 - $$projection not permitted in having clause ?

  The SAP error message SDDL_PARSER_MSG282 with the description "$$projection not permitted in having clause" typically occurs in the context of SAP HANA or when working with SQL queries in SAP systems. This error indicates that there is an issue with the use of projections in the HAVING clause of your SQL query.
  Cause:
  The error arises when you attempt to use a projection (which is a derived column or an alias) in the HAVING clause of a SQL statement. In SQL, the HAVING clause is used to filter records that work on aggregated data, and it does not allow the use of projections directly. Instead, you should use the original columns or aggregate functions.
  Solution:
  To resolve this error, you should modify your SQL query to avoid using projections in the HAVING clause. Here are some steps you can take:
  
  
  Use Aggregate Functions: Instead of using a projection, use the actual aggregate function in the HAVING clause. For example, if you have a projection like SUM(sales) AS total_sales, you should use SUM(sales) directly in the HAVING clause.
  
  
  Rearrange Your Query: If you need to use a calculated value, consider moving the calculation to the SELECT clause and then using it in a subquery or Common Table Expression (CTE) to filter the results.
  
  
  Example:
  Instead of writing:
  SELECT product, SUM(sales) AS total_sales
  FROM sales_data
  GROUP BY product
  HAVING total_sales > 1000;  -- This will cause the error
  You should write:
  SELECT product, SUM(sales) AS total_sales
  FROM sales_data
  GROUP BY product
  HAVING SUM(sales) > 1000;  -- This is correct
  
  
  Related Information:
  
  SQL Syntax: Familiarize yourself with SQL syntax, especially the rules regarding the HAVING clause and how it interacts with GROUP BY.
  SAP HANA Documentation: Refer to the official SAP HANA documentation for more details on SQL syntax and best practices.
  Debugging Queries: If you encounter similar issues, consider breaking down your query into smaller parts to isolate the problem.
  
  By following these guidelines, you should be able to resolve the error and successfully execute your SQL queries in SAP.