How To Fix DDLS290 - The CAST function is not supported in the & clause

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 290

• Message text: The CAST function is not supported in the & clause

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS290 - The CAST function is not supported in the & clause ?

  The SAP error message DDLS290, which states "The CAST function is not supported in the & clause," typically occurs in the context of ABAP programming or when working with database views in SAP. This error indicates that the SQL statement you are trying to execute includes a CAST function in a place where it is not allowed, specifically in the WHERE clause or in a similar context.
  Cause:
  The primary cause of this error is the use of the CAST function in a part of the SQL statement where it is not supported. The CAST function is used to convert one data type to another, but certain clauses in SQL do not allow for such conversions directly.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Remove the CAST Function: If possible, try to avoid using the CAST function in the problematic clause. Instead, ensure that the data types match without needing conversion.
  
  
  Use a Subquery: If you need to perform a type conversion, consider using a subquery. You can perform the CAST operation in the subquery and then reference the result in the outer query.
  Example:
  SELECT *
  FROM (SELECT CAST(column_name AS desired_type) AS new_column
        FROM your_table) AS subquery
  WHERE new_column = some_value;
  
  
  Check Data Types: Ensure that the data types of the columns being compared in the WHERE clause are compatible. If they are not, consider changing the data type of the column in the database or adjusting the logic of your query.
  
  
  Use Alternative Functions: If the CAST function is not supported, check if there are alternative functions or methods available in your version of SAP that can achieve the same result.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for SQL syntax and functions to understand the limitations and supported operations in your specific version of SAP.
  ABAP Development: If you are working within an ABAP program, review the ABAP documentation for best practices regarding data type handling and SQL operations.
  Database Compatibility: Be aware that different database systems (e.g., HANA, Oracle, SQL Server) may have different support for SQL functions, including CAST. Ensure that your SQL code is compatible with the database you are using.
  
  By following these steps, you should be able to resolve the DDLS290 error and successfully execute your SQL statement.