1、where循环create procedure p_addnum()
begin
declare i int default 1;
declare addresult int default 0;
while i <= 100 do
set addresult = addresult + i;
set i = i + 1;
end while;
select addresult;
end;
$$;
2、repeat循环create procedure p_updatenum()
begin
declare imin int default 1;
declare value int default 1;
declare imax int default 100;
repeat
select value;
set value = value + 1;
set imin = imin + 1;
until imin > imax
end repeat;
end;
$$;
3、loop循环create procedure p_updateloop()
begin
declare imin int default 1;
declare value int default 1;
declare imax int default 100;
myloop:loop
select value;
set value = value + 1;
set imin = imin + 1;
if imin > imax then
leave myloop;
end if;
end loop;
end;
$$;
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