How to combine for and bulkinsert in MySQL - mysql

Question

I was creating the following SQL to insert 10,000,000 records into the users_bobbies table.
However, it is too slow to proceed.
How can I introduce a bulk insert into this WHILE statement?
I would appreciate it if you could tell me.
Version: MySQL5.7
drop procedure if exists insert_user_hobby_data;
DELIMITER $$
CREATE PROCEDURE insert_user_hobby_data()
BEGIN
DECLARE i INT DEFAULT 1;
SET #user_counter = 0;
WHILE #user_counter <= 9999999 DO
set #user_id = #user_counter + 1;
INSERT INTO users_bobbies (user_id, hobby_id)
VALUES (#user_id, 1);
SET #user_counter = #user_counter + 1;
END WHILE;
END$$
DELIMITER ;
CALL insert_user_hobby_data();

Answer 1

This code got it running.
DROP PROCEDURE IF EXISTS bulk_insert;
DELIMITER ;;
CREATE PROCEDURE bulk_insert(IN len INT, IN block INT)
BEGIN
SET #cnt = 0;
loop1: LOOP
SET #sql = 'INSERT INTO users_bobbies (user_id,hobby_id)VALUES';
SET #i = 0;
loop2: LOOP
IF #cnt >= len THEN LEAVE loop1; END IF;
SET #id = #cnt + 1;
SET #sql = CONCAT(#sql, ' (', #id, ',', #cnt+1, ')');
SET #cnt = #cnt + 1;
SET #i = #i + 1;
IF #i < block AND #cnt < len THEN SET #sql = CONCAT(#sql, ',');
ELSE LEAVE loop2; END IF;
END LOOP loop2;
PREPARE stmt FROM #sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END LOOP loop1;
END;;
DELIMITER ;
TRUNCATE users_bobbies; CALL bulk_insert(10000000, 1000);