oracle plsql utl_file
Unicode的CSV檔編碼格式，要用NCHAR的Procedure
檔名跟路徑都是Case sensitive!!
BEGIN
dst_file := UTL_FILE.fopen_nchar(LOCATION => v_workdir, filename => v_file_name, open_mode => 'R');
UTL_FILE.get_line_nchar(FILE => dst_file, buffer => v_temp_str);
END;