Multiple cursors in nested loops in MySQL

Question

I wish to do something which appear a bit complicated in MySQL. In fact, I wish to open a cursor, do a loop, and in this loop, open a second cursor using the data from the previ

Answer 1

you could use loop,and reset the value of the handle,like this:

get_something:loop
  open cur;
  fetch cur into temp_key;
  if no_more_record=1 then
    set no_more_record=0;
    close cur;
    leave get_something;
  else
    //do your job;
  end if;
end loop;