mysql进阶：存储过程中的循环（WHILE DO and FOR LOOP）

WHILE DO

drop procedure if exists p_while_do;

create procedure p_while_do()
begin
    declare i int;
        set i = 1;
        while i <= 10 do
            select concat('index : ', i);
            set i = i + 1;
        end while;
end;

call p_while_do();

FOR LOOP

drop procedure if exists p_for_loop;

create procedure p_for_loop()
begin
    declare i int;
        set i = 1;
        loop_example : loop
            select concat('index -> ', i);
            set i = i + 1;

            if i > 10 then
                leave loop_example;
            end if;
        end loop;
end;

call p_for_loop();