Native SQL Update statement error when more than one field used

Question

Hi, I would make it simple. I update directly to a SQL server.
1-
When I update only one field works.
LOOP AT IT_MAT.
EXEC SQL.
UPDATE Articulos SET PrecioSinImp = :IT_MAT-PRECIOSINIMP        WHERE Modelo = :IT_MAT-MODELO
ENDEXEC.
ENDLOOP.
This give me sy-subrc = 0
When I Try to update several fields doesnt works, any would can help me ?.
LOOP AT IT_MAT.
EXEC SQL.
  UPDATE Articulos SET PrecioSinImp = :IT_MAT-PRECIOSINIMP
                       Descripcion = :IT_MAT-DESCRIPCION
  WHERE Modelo = :IT_MAT-MODELO
ENDEXEC.
ENDLOOP.
This give me dump SQL error 170.
2- BTW, I have to leave this report program in a job so the data would be updated once a day in a job, so I have to update the existing data and add new one.
I Was thinking doing something like this.
LOOP AT it_table.
UPDATE DQL TABLE
IF sy-subrc <> 0.
INSERT DQL TABLE
ENDIF.
ENDLOOP.
This may works ??? because if this not work, I have to select single each one of the data in the SQL table, if it was founded UPDATE otherwise INSERT. And I dont like this aproach.
Thx

Answer 1

Hi Rodrigo,
I feel that your requirement is as below:
Depending on the criteria in the where clause, check whether the record exists or not.. If it does, then update the record with new values, else, create a new record..
You can do the same as below:
LOOP AT it_mat INTO e_mat. (e_mat of same structure as it_mat)
MOVE : xxx TO e_mat-yyy... and so on (Only change the non-key values)
MODIFY dbtable FROM e_mat.
ENDLOOP.
This code will create a new record if a record with the given key values in e_mat is not found, else, it will update the existing record with the new non-key values in the structure e_mat.
Thanks and Best Regards,
Vikas Bittera.
<b><REMOVED BY MODERATOR></b>
Message was edited by:
        Alvaro Tejada Galindo