Insert into change value if duplicate entry - mysql

Question

I have this sql query:
INSERT INTO my_table
SELECT id, name, type
FROM other_table
I have this row: 1,bob,male
And I try insert: 1,bob,male
So, I have a duplicate entry error and I want change my insert value with an increment by one so after I would have two rows:
bob,male <=NOT UPDATED
bob,male
I don't want update the existing row, if I have a duplicate entry error. The insert increments the id value. So, I think ON DUPLICATE KEY isn't the solution.
UPDATE:
If I use a trigger like this:
DELIMITER |
CREATE TRIGGER incremente_primary BEFORE INSERT ON my_table FOR EACH ROW
BEGIN
IF( EXISTS( SELECT * FROM my_table )) THEN
SET NEW.id = NEW.id + 1;
END IF;
END |
DELIMITER ;
It doesn't work because a trigger can read only one line.

Answer 1

As per your requirement, you need to set auto_increment property for your id and then just insert other columns except id, so that it can be auto_increment like below-
INSERT INTO my_table (name,type)
SELECT name, type
FROM other_table;
If you just want to ignore if there is duplicate then you can use-
INSERT IGNORE INTO my_table
SELECT id,name, type
FROM other_table;

Answer 2

make sure that the primary key isn't the name or the type. Because you can input duplicate rows as long as you do not duplicate primary keys

Answer 3

I find a solution, i use a cursor:
DROP PROCEDURE proc_incremente;
DELIMITER |
CREATE PROCEDURE proc_incremente()
BEGIN
DECLARE var_name, var_type VARCHAR(100);
DECLARE var_id INT;
DECLARE end TINYINT(1) DEFAULT 0;
DECLARE cursor_incremente CURSOR
FOR SELECT * FROM other_table;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET end = 1;
OPEN cursor_incremente;
loop_cursor: LOOP
FETCH cursor_incremente INTO var_id, var_name, var_type;
IF end = 1 THEN
LEAVE loop_cursor;
END IF;
WHILE ( EXISTS( SELECT * my_table WHERE id = var_id) IS TRUE) DO
SET var_id = var_id + 1;
END WHILE;
INSERT INTO my_table(id,name,type) VALUES(var_id,var_name,var_type);
END LOOP;
CLOSE cursor_incremente;
END |
DELIMITER ;
CALL proc_incremente();