DDLS109 - Only literals are supported on the right-hand side of a Where condition

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 109

• Message text: Only literals are supported on the right-hand side of a Where condition

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS109 - Only literals are supported on the right-hand side of a Where condition ?

  The SAP error message DDLS109 indicates that there is an issue with a SQL statement, specifically in the context of a WHERE clause. The error message states: "Only literals are supported on the right-hand side of a WHERE condition." This typically occurs when you are trying to use a non-literal value (like a variable or a subquery) in a WHERE clause, which is not allowed in certain contexts in SAP ABAP or when working with Open SQL.
  Cause:
  The error is caused by attempting to use a non-literal value on the right-hand side of a comparison in a WHERE clause. For example, if you have a statement like this:
  SELECT * FROM my_table WHERE my_field = my_variable.
  In this case, my_variable is not a literal value, and the SQL engine does not support it in this context.
  Solution:
  To resolve this error, you need to ensure that the right-hand side of the WHERE condition only contains literals or constants. Here are a few approaches to fix the issue:
  
  
  Use a Literal Value: If possible, replace the variable with a literal value directly in the SQL statement.
  
  
  Use a Subquery: If you need to compare against a value that is not a literal, consider using a subquery that returns a single value. For example:
  SELECT * FROM my_table WHERE my_field = (SELECT some_field FROM another_table WHERE condition).
  
  
  Use a Join: If the value you are trying to compare comes from another table, consider using a join instead of a direct comparison:
  SELECT a.* FROM my_table AS a
  JOIN another_table AS b ON a.my_field = b.some_field
  WHERE b.condition = 'some_value'.
  
  
  Dynamic SQL: If you are dynamically constructing your SQL statements, ensure that you are correctly handling the variables and literals.
  
  
  Related Information:
  
  Open SQL: In SAP, Open SQL is a subset of SQL that is used to interact with the database. It has specific rules and limitations, especially regarding the use of variables and literals.
  ABAP Programming: Understanding how ABAP handles data types and variable declarations can help prevent this error. Ensure that you are using the correct data types and structures.
  Debugging: If you encounter this error, check the SQL statement being generated and ensure that all comparisons in the WHERE clause are valid.
  
  By following these guidelines, you should be able to resolve the DDLS109 error and successfully execute your SQL statements in SAP.