procedure ClearField(dbf, f :integer); — DBF Script

ClearField fills the internal memory for the specified field with blank symbols (blanks or zeroes).
You can to call this function before you want to fill a field with some information or if you want to clear the field content.


var
  dbf :integer;
  r :integer;
begin
  dbf := OpenBase( 'filename.dbf' );
  if dbf <> 0 then
  begin
    for r := 0 to RecCount(dbf)-1 do
    begin
      ReadRecord(dbf, r);
      ClearField(dbf, 2); // clear a field #2
      WriteRecord(dbf, r);
    end;
    CloseBase(dbf);
  end;
end.