How to get the seed value of an identity column in MySQL?

For this, you can use SHOW VARIABLES command −

mysql> SHOW VARIABLES LIKE 'auto_inc%';

Output

This will produce the following output −

+--------------------------+-------+ | Variable_name            | Value | +--------------------------+-------+ | auto_increment_increment | 1     | | auto_increment_offset    | 1     | +--------------------------+-------+ 2 rows in set (0.95 sec)

You can control over AUTO_INCREMENT outside.

Let us first create a table −

mysql> create table DemoTable    -> (    -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY    -> ); Query OK, 0 rows affected (0.94 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(); Query OK, 1 row affected (0.44 sec) mysql> insert into DemoTable values(); Query OK, 1 row affected (0.26 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+-----------+ | StudentId | +-----------+ | 1         | | 2 | +-----------+ 2 rows in set (0.00 sec)

Now you can control over the AUTO_INCREMENT −

mysql> alter table DemoTable AUTO_INCREMENT=1000; Query OK, 0 rows affected (0.50 sec) Records: 0  Duplicates: 0  Warnings: 0

Insert some records in the table using insert command −

mysql> insert into DemoTable values(); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(); Query OK, 1 row affected (1.37 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+-----------+ | StudentId | +-----------+ |         1 | |         2 | |      1000 | |      1001 | +-----------+ 4 rows in set (0.00 sec)