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Can we use “When” as column name in CREATE TABLE statement?
Before beginning, let us try to set ‘when’ as column name while using CREATE TABLE statement −
mysql> create table DemoTable693( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100), When datetime );
This will produce the following output. An error would be visible:
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'When datetime at line 5
You need to wrap the reserved word using backticks, for example, `when`. Let us first create a table and implement the same:
mysql> create table DemoTable693 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100), `When` datetime ); Query OK, 0 rows affected (0.63 sec)
Insert some records in the table using insert command:
mysql> insert into DemoTable693(StudentName,`When`) values('Chris',NOW());
Query OK, 1 row affected (0.22 sec)
mysql> insert into DemoTable693(StudentName,`When`) values('Robert',CURDATE());
Query OK, 1 row affected (0.22 sec)Display all records from the table using select statement -
mysql> select *from DemoTable693;
This will produce the following output -
+-----------+-------------+---------------------+ | StudentId | StudentName | When | +-----------+-------------+---------------------+ | 1 | Chris | 2019-07-21 18:57:19 | | 2 | Robert | 2019-07-21 00:00:00 | +-----------+-------------+---------------------+ 2 rows in set (0.00 sec)
Updated on: 21-Aug-2019
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