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Insertion d'une image d'Oracle dans SQL Server

Dans l'exemple, mssqllink est le nom d'un lien de base de données qui utilise DG4ODBC et le pilote ODBC SQL Server d'Easysoft pour se connecter à SQL Server.

CREATE DIRECTORY IMAGE AS '/tmp';

DECLARE
  curid NUMBER;
  execid NUMBER;
  src_file BFILE:=NULL;
  dst_file BLOB;
  lgh_file BINARY_INTEGER;
  file_status boolean:=false;
  amt BINARY_INTEGER := 2000; -- The maximum image size for this example is 2K.
  buf RAW(2000);
  bound_raw long raw;
  pos INTEGER := 1;

BEGIN
src_file := BFILENAME('IMAGE', 'test.jpg');
file_status := dbms_lob.fileexists( src_file )=1;

if file_status then

  -- open the file
  dbms_lob.createtemporary(dst_file, true, dbms_lob.call);
  dbms_lob.fileopen (src_file);

  -- determine length
  lgh_file := dbms_lob.getlength (src_file);
  dbms_output.put_line('Size : ' || lgh_file);
  if lgh_file<2001 then
      -- Read the file
      -- dbms_lob.loadfromfile(dst_file, src_file, lgh_file);
      Begin
        LOOP
          dbms_output.put_line('Pos : ' || pos);
          dbms_lob.read(src_file, amt, pos, buf);
          bound_raw :=bound_raw || buf;
          -- Process contents of buffer
          pos := pos + amt;
        END LOOP;
        EXCEPTION
            WHEN NO_DATA_FOUND
            THEN
                BEGIN
                    dbms_output.put_line('End of data reached');
                    dbms_lob.fileclose(src_file);
                END;
      -- Insert the blob field
      end;
      dbms_output.put_line('Buffer : ' || buf);
      curid := DBMS_HS_PASSTHROUGH.OPEN_CURSOR@mssqllink; -- Replace this with the name of your linked table
      DBMS_HS_PASSTHROUGH.PARSE@mssqllink(curid,'insert into blb values (1,?)'); -- Destination table in SQL Server
      DBMS_HS_PASSTHROUGH.BIND_VARIABLE_RAW@mssqllink(curid, 1, buf );

      execid := DBMS_HS_PASSTHROUGH.EXECUTE_NON_QUERY@mssqllink(curid);
      DBMS_HS_PASSTHROUGH.CLOSE_CURSOR@mssqllink(curid);

      commit;
      dbms_output.put_line('Data sent to Easysoft SQL Server ODBC driver');
    else
        dbms_output.put_line('File size is too big for Oracle');
    end if;
else
  dbms_output.put_line('Can not open file.');
end if;

END;
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