mysql> create table test_myisam (id int not null auto_increment primary key, name char(5)) engine=myisam;Query OK, 0 rows affected (0.04 sec)mysql> insert into test_myisam (name) select ‘a‘;Query OK, 1 row affected (0.00 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> insert into test_myisam (name) select ‘b‘;Query OK, 1 row affected (0.00 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> insert into test_myisam (name) select ‘c‘;Query OK, 1 row affected (0.00 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> insert into test_myisam (name) select name from test_myisam;Query OK, 3 rows affected (0.00 sec)Records: 3  Duplicates: 0  Warnings: 0mysql> select * from test_myisam;+----+------+| id | name |+----+------+|  1 | a    ||  2 | b    ||  3 | c    ||  4 | a    ||  5 | b    ||  6 | c    |+----+------+6 rows in set (0.00 sec)mysql> delete from test_myisam where id=6;Query OK, 1 row affected (0.00 sec)

mysql> insert into test_myisam(name) select ‘d‘;Query OK, 1 row affected (0.00 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> select * from test_myisam;+----+------+| id | name |+----+------+|  1 | a    ||  2 | b    ||  3 | c    ||  4 | a    ||  5 | b    ||  7 | d    |+----+------+6 rows in set (0.00 sec)

mysql> create table test_innodb(id int not null auto_increment primary key, name char(5)) engine=innodb;Query OK, 0 rows affected (0.26 sec)mysql> insert into test_innodb (name)select ‘a‘;Query OK, 1 row affected (0.06 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> insert into test_innodb (name)select ‘b‘;Query OK, 1 row affected (0.06 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> insert into test_innodb (name)select ‘c‘;Query OK, 1 row affected (0.07 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> select * from test_innodb;+----+------+| id | name |+----+------+|  1 | a    ||  2 | b    ||  3 | c    |+----+------+3 rows in set (0.00 sec)mysql> delete from test_innodb where id=3;Query OK, 1 row affected (0.05 sec)mysql> insert into test_innodb (name)select ‘d‘;Query OK, 1 row affected (0.20 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> select * from test_innodb;+----+------+| id | name |+----+------+|  1 | a    ||  2 | b    ||  4 | d    |+----+------+3 rows in set (0.00 sec)mysql> exitBye[2@a data]$ mysql -uroot -pwsdadWelcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 5Server version: 5.5.37-log Source distributionCopyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.mysql> use wisonDatabase changedmysql> delete from test_innodb where id=4;Query OK, 1 row affected (0.07 sec)mysql> exitBye[2@a data]$ sudo service mysql restartShutting down MySQL... SUCCESS!Starting MySQL.. SUCCESS![2@a data]$ mysql -uroot -pwisonWelcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 1Server version: 5.5.37-log Source distributionCopyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.mysql> use wisonDatabase changedmysql> insert into test_innodb (name) select ‘z‘;Query OK, 1 row affected (0.07 sec)Records: 1  Duplicates: 0  Warnings: 0mysql> select * from test_innodb;+----+------+| id | name |+----+------+|  1 | a    ||  2 | b    ||  3 | z    |+----+------+3 rows in set (0.00 sec)