Question

I have a stored procedure in mysql. In it i am selecting some values from database using following statement ,

select version_id from version where version_name between '1.1' and '1.5' 

Now i want to run a loop for all selected values from above statement means suppose above statement returns following row ,
version_id (1,5,3,7)
so i want to run a loop for values 1,5,3,7 .

How can i achieve this ?

Answer 1

In MySQL, you need to use Cursor element to loop in values

CREATE PROCEDURE CURSOR_LOOP()
BEGIN
DECLARE C1 CURSOR FOR
  select version_id where version_name between '1.1' and '1.5' 

OPEN C1;
read_loop: LOOP
  FETCH C1 INTO v_ID;
  IF done THEN
     LEAVE read_loop;
  END IF;
-- YOUR ACTION HERE                                            
END LOOP;
CLOSE C1;
-- OTHERS ACTIONS
END;