Use a variable as a table name with NATIVE SQL

Question

Hi all,
I am trying to execute a SELECT statement in order to fetch data from an external Oracle DB table to SAP with the following instructions:
EXEC SQL.
  SELECT cityfrom, cityto
         INTO STRUCTURE :wa
         FROM spfli
         WHERE mandt  = :sy-mandt AND
               carrid = :p_carrid AND connid = :p_connid
ENDEXEC.
However, I need to indicate the external table name from a variable instead of the solution above. That is, declaring a variable and store the name of the table (e.q. spfli) in it. The resulting ABAP code would be something like:
EXEC SQL.
  SELECT cityfrom, cityto
         INTO STRUCTURE :wa
         FROM <VARIABLE>
         WHERE mandt  = :sy-mandt AND
               carrid = :p_carrid AND connid = :p_connid
ENDEXEC.
Does anybody know if is possible to do that?
If not, is there any other solution?
Thank you in advance

Answer 1

Yes, as Suhas said, you could use the ADBC API and his class CL_SQL_CONNECTION to achieve this...
Here is a small example:
PARAMETERS: p_carrid TYPE spfli-carrid,
                           p_connid TYPE spfli-connid.
DATA:
  l_con_ref      TYPE REF TO cl_sql_connection,
  l_stmt         TYPE string,
  l_stmt_ref     TYPE REF TO cl_sql_statement,
  l_dref         TYPE REF TO data,
  l_res_ref      TYPE REF TO cl_sql_result_set,
  l_col1         TYPE spfli-carrid,
  l_col2         TYPE spfli-connid,
  l_wa           TYPE spfli.
CONSTANTS:
  c_tabname  TYPE string VALUE 'SPFLI'.
* Create the connecction object
CREATE OBJECT l_con_ref.
* Create the SQL statement object
CONCATENATE 'select * from' c_tabname 'where carrid = ? and connid = ?'
       INTO l_stmt SEPARATED BY space.                           "#EC NOTEXT
l_stmt_ref = l_con_ref->create_statement( ).
* Bind input variables
GET REFERENCE OF l_col1 INTO l_dref.
l_stmt_ref->set_param( l_dref ).
GET REFERENCE OF l_col2 INTO l_dref.
l_stmt_ref->set_param( l_dref ).
* Set the input value and execute the query
l_col1 = p_carrid.
l_col2 = p_connid.
l_res_ref = l_stmt_ref->execute_query( l_stmt ).
* Set output structure
GET REFERENCE OF l_wa INTO l_dref.
l_res_ref->set_param_struct( l_dref ).
* Show result
WHILE l_res_ref->next( ) > 0.
  WRITE: / 'Result:', l_wa-carrid, l_wa-connid.
ENDWHILE.
* Close the result set object
l_res_ref->close( ).
Otherwise you can also use the FM DB_EXECUTE_SQL...
Kr,
m.