Syntax:
FETCH cursor_name INTO var_name [, var_name] ...

This statement fetches the next row (if a row exists) using the
specified open cursor, and advances the cursor pointer.

If no more rows are available, a No Data condition occurs with SQLSTATE
value 02000. To detect this condition, you can set up a handler for it
(or for a NOT FOUND condition). An example is shown in
http://dev.mysql.com/doc/refman/5.5/en/cursors.html.

URL: http://dev.mysql.com/doc/refman/5.5/en/fetch.html

