Can we use SELECT NULL statement in a MySQL query?

MySQLMySQLi Database

Yes, we can use the SELECT NULL statement in a MySQL query. Let us first create a table −

mysql> create table DemoTable
(
   Name varchar(100)
);
Query OK, 0 rows affected (0.49 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('Chris');
Query OK, 1 row affected (0.47 sec)
mysql> insert into DemoTable values('Mike');
Query OK, 1 row affected (0.23 sec)
mysql> insert into DemoTable values('Sam');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('Bob');
Query OK, 1 row affected (0.27 sec)
mysql> insert into DemoTable values('David');
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-------+
| Name  |
+-------+
| Chris |
| Mike  |
| Sam   |
| Bob   |
| David |
+-------+
5 rows in set (0.00 sec)

Following is the query to implement SELECT NULL −

mysql> select null from DemoTable where Name='Mike';

This will produce the following output −

+------+
| NULL |
+------+
| NULL |
+------+
1 row in set (0.00 sec)
raja
Published on 24-Sep-2019 12:55:05
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