How To Fix DDLS285 - Expressions with session variables are not allowed in the & clause

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 285

• Message text: Expressions with session variables are not allowed in the & clause

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS285 - Expressions with session variables are not allowed in the & clause ?

  The SAP error message DDLS285 indicates that there is an issue with the use of session variables in the context of a dynamic SQL statement, specifically in the & clause. This error typically arises when you are trying to use session variables in a way that is not supported by the SAP system.
  Cause:
  The error occurs because session variables (like :session_variable) cannot be used in the & clause of a dynamic SQL statement. The & clause is used for defining placeholders in SQL statements, and it does not support the use of session variables directly. This restriction is in place to ensure that the SQL statements are processed correctly and to maintain the integrity of the SQL execution context.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Avoid Using Session Variables in the & Clause:
  
  Instead of using session variables directly in the & clause, you can use local variables or constants that are defined within the scope of your SQL statement.
  
  
  
  Use Alternative Methods:
  
  If you need to pass values dynamically, consider using other methods such as:
  
  Using a temporary table to store the values you want to use in your SQL statement.
  Constructing the SQL statement as a string and executing it using dynamic SQL execution methods (like EXEC or EXECUTE IMMEDIATE), ensuring that you handle the variable substitution correctly.
  
  
  
  
  
  Check SQL Syntax:
  
  Review the SQL syntax to ensure that it adheres to the rules of the SQL dialect you are using. Make sure that you are not inadvertently trying to use session variables in a context where they are not allowed.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or the specific database documentation for more details on the limitations and best practices regarding the use of session variables and dynamic SQL.
  
  
  
  Related Information:
  
  Dynamic SQL: Understand how dynamic SQL works in SAP and the limitations associated with it.
  Session Variables: Familiarize yourself with how session variables are defined and used in your specific SAP environment.
  Error Handling: Implement error handling in your SQL scripts to catch and manage errors like DDLS285 effectively.
  
  By following these guidelines, you should be able to resolve the DDLS285 error and successfully execute your SQL statements without encountering issues related to session variables.