Auto increment Id value increased by 1 after insert trigger - mysql

Question

I have 3 tables as below:
CREATE TABLE `user_dummy` (
`user_id` INT(11) NOT NULL AUTO_INCREMENT,
`user_name` VARCHAR(50) NOT NULL,
`user_email` VARCHAR(100) NOT NULL,
PRIMARY KEY (`user_id`)
)
ENGINE=InnoDB
;
CREATE TABLE `user_role` (
`user_role_id` INT(11) NOT NULL AUTO_INCREMENT,
`user_role_name` VARCHAR(255) NULL DEFAULT NULL,
PRIMARY KEY (`user_role_id`)
)
ENGINE=InnoDB
;
CREATE TABLE `user` (
`user_seq` INT(11) NOT NULL AUTO_INCREMENT,
`user_id` INT(11) NOT NULL,
`user_name` VARCHAR(50) NOT NULL,
`user_email` VARCHAR(100) NOT NULL,
`user_role_id` INT(11) NOT NULL,
PRIMARY KEY (`user_seq`),
INDEX `FKh2wc2dtfdo8maylne7mgubowq` (`user_role_id`),
CONSTRAINT `FKh2wc2dtfdo8maylne7mgubowq` FOREIGN KEY (`user_role_id`) REFERENCES `user_role` (`user_role_id`) ON UPDATE CASCADE ON DELETE CASCADE
)
ENGINE=InnoDB
;
I have created after insert trigger on user table.
i.e., when I insert 1 record into user_dummy table, it will insert records into table user table with all mappings of user_role.
trigger:
CREATE TRIGGER `user_dummy_after_insert` AFTER INSERT ON `user_dummy` FOR EACH ROW BEGIN
INSERT INTO user(user_id, user_name, user_email, user_role_id)
SELECT NEW.user_id, NEW.user_name, NEW.user_email, user_role_id
FROM user_role;
END
Above trigger is able to insert records into user table but the auto_increment value is incremented by 1 after each user_role record.
If you observe user_seq 3 is missing. And after inserting 4 records, auto_increment value set by trigger as 7.
How to fix this ?

Answer 1

Just an alternative: Better you could use the count function to count the total existing records and then increase it by one and assign according as. If you are interested to preserve the insertion sequence.