@ Symbol - a solution for Recursive SELECT query in Mysql?

Question

there are a lot of questions about Recursive SELECT query in Mysql, but most of answers is that \"There NO solution for Recursive SELECT query in Mysql\".

Actually t

Answer 1

Stored procedure is the best way to do it. Because Gordon's solution would work only if the data follows the same order.

If we have a table structure like this

col1 - col2 - col3
3 - k - 7
5 - d - 3
1 - a - 5
6 - o - 2
2 - 0 - 8

It wont work.

Here is a sample procedure code to achieve the same.

delimiter //
CREATE PROCEDURE chainReaction 
(
    in inputNo int
) 
BEGIN 
    declare final_id int default NULL;
    SELECT col3 into final_id from table1
    where col1 = inputNo;
    if( final_id is not null) then
        insert into results(select col1, col2, col3 from table1 where col1 = inputNo);
        CALL chainReaction(final_id);   
    end if;
END//
delimiter ;

call chainReaction(1);
select * from results;
drop table if exists results;