ALTER TABLE table_name AUTO_INCREMENT = 1;

ALTER TABLE `Table Name` AUTO_INCREMENT = 1;

ALTER TABLE tablename AUTO_INCREMENT = 1

SET  @num := 0;

​

UPDATE your_table SET id = @num := (@num+1);

​

ALTER TABLE your_table AUTO_INCREMENT =1;

#reiniciamos el auto-incrementable

ALTER TABLE nombre_tabla AUTO_INCREMENT = 1;

ALTER SEQUENCE users_id_seq RESTART WITH 1;

#               |     |

#            TABLE  COLUMN

ALTER TABLE t1 AUTO_INCREMENT = 13;

Reset ID counter in MySQL