printf("insert failed, %sn", mysql_error(conn));
exit(1);
}
if ((mysql_real_query(conn, "SELECT file FROM www where id=1", 31)) != 0)
{
printf("insert failed, %sn", mysql_error(conn));
exit(1);
}
res_set = mysql_store_result(conn);
fclose(fp);
fp = NULL;
fp = fopen("c:123.iso", "wb" );
while ((row = mysql_fetch_row(res_set)) != NULL)
{
length = mysql_fetch_lengths(res_set);
for (i=0; i<mysql_num_fields(res_set); i++)
{
fwrite(row[0], 1, length[0], fp);
//printf("%sn",row[0]);
}
}
fclose(fp);
mysql_close(conn);
free(sql);
free(buf);
sql = NULL;
return 0;
}
运行结果:
