Question

For testing, is it possible to run a loop from MySQL workbench or similar tool? I tried but got an error.

If it is possible, please supply a simple example I can run.

Answer 1

You can’t do a for loop in an SQL editor without a stored procedure. I use TOAD for MySQL.

A quick stored procedure should do the job:

DELIMITER $$

DROP PROCEDURE IF EXISTS proc_loop_test$$
CREATE PROCEDURE proc_loop_test()
BEGIN
  DECLARE int_val INT DEFAULT 0;
  test_loop : LOOP
    IF (int_val = 10) THEN
      LEAVE test_loop;
    END IF;

    SET int_val = int_val +1;
    SELECT int_val; 
  END LOOP; 
END$$

DELIMITER ;