Ignore null values in MySQL and display rest of the values

MySQLMySQLi Database

Use IS NOT NULL to find the non-null values and display them. Let us first create a table −

mysql> create table DemoTable1458
   -> (
   -> StudentName varchar(20),
   -> StudentScore int
   -> );
Query OK, 0 rows affected (0.52 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1458 values('Chris Brown',56);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1458 values('David Miller',NULL);
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable1458 values('John Doe',78);
Query OK, 1 row affected (0.08 sec)
mysql> insert into DemoTable1458 values('Adam Smith',NULL);
Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1458;

This will produce the following output −

+--------------+--------------+
| StudentName  | StudentScore |
+--------------+--------------+
| Chris Brown  |           56 |
| David Miller |         NULL |
| John Doe     |           78 |
| Adam Smith   |         NULL |
+--------------+--------------+
4 rows in set (0.00 sec)

Here is the query to ignore null values −

mysql> select StudentName,StudentScore from DemoTable1458
   -> where StudentScore IS NOT NULL;

This will produce the following output −

+-------------+--------------+
| StudentName | StudentScore |
+-------------+--------------+
| Chris Brown |           56 |
| John Doe    |           78 |
+-------------+--------------+
2 rows in set (0.00 sec)
raja
Published on 10-Dec-2019 11:02:15
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