CREATE DEFINER=`root`@`localhost` PROCEDURE `proc_initData`( )
BEGIN
DECLARE
i INT DEFAULT 1;
WHILE
i <= 20000000 DO
INSERT INTO visit_details (inc_id, area_code, patient_code, created_at, updated_at )
VALUES
( i, i, i, NOW(), NOW());
SET i = i + 1;
END WHILE;
END