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Can we use SELECT NULL statement in a MySQL query?
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)
Updated on: 24-Sep-2019
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