How do I select data that does not have a null record in MySQL?
To select not-null records, use IS NOT NULL property. Let us first create a table −
mysql> create table DemoTable1792
(
Name varchar(20)
);
Query OK, 0 rows affected (0.00 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1792 values('John Smith');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1792 values(NULL);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1792 values('David Miller');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1792 values(NULL);
Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1792;
This will produce the following output −
+--------------+
| Name |
+--------------+
| John Smith |
| NULL |
| David Miller |
| NULL |
+--------------+
4 rows in set (0.00 sec)
Following is the query to select data that does not have a null record −
mysql> select * from DemoTable1792 where Name IS NOT NULL;
This will produce the following output −
+--------------+
| Name |
+--------------+
| John Smith |
| David Miller |
+--------------+
2 rows in set (0.00 sec)
Published on 23-Dec-2019 16:28:10
