How To Fix DDLS209 - Name list in Select cannot be combined with $extension and select *

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 209

• Message text: Name list in Select cannot be combined with $extension and select *

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS209 - Name list in Select cannot be combined with $extension and select * ?

  The SAP error message DDLS209 indicates that there is an issue with the way a SELECT statement is constructed in a Data Definition Language (DDL) context, particularly when using the SELECT statement in conjunction with $extension and SELECT *. This error typically arises in the context of ABAP programming or when working with database views.
  Cause:
  The error occurs when you attempt to combine a name list in a SELECT statement with the $extension keyword and the SELECT * syntax. The $extension keyword is used to include additional fields from a database table or view, but it cannot be used together with a name list or SELECT * in the same statement. This is a restriction in the syntax of the SELECT statement in ABAP.
  Solution:
  To resolve this error, you need to modify your SELECT statement to avoid using both $extension and a name list or SELECT * together. Here are a few approaches you can take:
  
  
  Use Explicit Field List: Instead of using SELECT *, explicitly list the fields you want to select, including any fields from the $extension. For example:
  SELECT field1, field2, field3, $extension
  FROM your_table
  WHERE conditions.
  
  
  Separate Queries: If you need to use both $extension and a name list, consider separating the queries. First, retrieve the necessary fields without $extension, and then perform another query to get the extended fields.
  
  
  Avoid Using $extension: If the additional fields are not necessary, you can simply remove the $extension from your SELECT statement.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for more details on SELECT statements and the use of $extension.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or updates regarding this error.
  Community Forums: Engage with the SAP community forums or Stack Overflow for insights from other developers who may have encountered and resolved similar issues.
  
  By following these guidelines, you should be able to resolve the DDLS209 error and construct valid SELECT statements in your ABAP programs.