If this value is larger than the current sequence counter, subsequent automatically generated values begin with the value plus one : AUTO_INCREMENT « Data Type « SQL / MySQL






  1. SQL / MySQL
  2. Data Type
  3. AUTO_INCREMENT

If this value is larger than the current sequence counter, subsequent automatically generated values begin with the value plus one

       

mysql>
mysql> CREATE TABLE t (id INT AUTO_INCREMENT, PRIMARY KEY (id));
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> INSERT INTO t (id) VALUES(NULL),(NULL),(17),(NULL),(NULL);
Query OK, 5 rows affected (0.00 sec)
Records: 5  Duplicates: 0  Warnings: 0

mysql> SELECT id FROM t;
+----+
| id |
+----+
|  1 |
|  2 |
| 17 |
| 18 |
| 19 |
+----+
5 rows in set (0.00 sec)

mysql>
mysql> drop table t;
Query OK, 0 rows affected (0.00 sec)








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