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Is there a need to insert auto_increment column values in MySQL while using INSERT statement?
No, there’s no need to insert auto_increment column values, since it begins from 1 and inserts on its own. This is because we have set it as auto increment. Let us first create a table −
mysql> create table DemoTable ( EmployeeId int NOT NULL AUTO_INCREMENT, EmployeeName varchar(30), EmployeeSalary int, PRIMARY KEY(EmployeeId) ); Query OK, 0 rows affected (0.49 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Chris',56789);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('David',78909);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Mike',100056);
Query OK, 1 row affected (0.39 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Bob',150000);
Query OK, 1 row affected (0.19 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output. Here, you can see the id value gets added on its own since we have set it as auto_increment −
+------------+--------------+----------------+ | EmployeeId | EmployeeName | EmployeeSalary | +------------+--------------+----------------+ | 1 | Chris | 56789 | | 2 | David | 78909 | | 3 | Mike | 100056 | | 4 | Bob | 150000 | +------------+--------------+----------------+ 4 rows in set (0.00 sec)
Updated on: 07-Oct-2019
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