MySQL filtering by multiple columns?

MySQLMySQLi Database

To perform filtering by multiple columns, use where clause along with OR. Let us first create a table −

mysql> create table DemoTable
   (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Name varchar(10),
   Score int
   );
Query OK, 0 rows affected (0.28 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(Name,Score) values('John',80);
Query OK, 1 row affected (0.04 sec)

mysql> insert into DemoTable(Name,Score) values('John',90);
Query OK, 1 row affected (0.06 sec)

mysql> insert into DemoTable(Name,Score) values('Carol',89);
Query OK, 1 row affected (0.04 sec)

mysql> insert into DemoTable(Name,Score) values('John',86);
Query OK, 1 row affected (0.04 sec)

mysql> insert into DemoTable(Name,Score) values('Carol',98);
Query OK, 1 row affected (0.06 sec)

mysql> insert into DemoTable(Name,Score) values('David',99);
Query OK, 1 row affected (0.06 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+----+-------+-------+
| Id | Name  | Score |
+----+-------+-------+
| 1  | John  | 80    |
| 2  | John  | 90    |
| 3  | Carol | 89    |
| 4  | John  | 86    |
| 5  | Carol | 98    |
| 6  | David | 99    |
+----+-------+-------+
6 rows in set (0.00 sec)

Following is the query to perform filtering by multiple columns −

mysql> select *from DemoTable where (Name,Score)=('John', 90) or (Name,Score)=('Carol', 98);

This will produce the following output −

+----+-------+-------+
| Id | Name  | Score |
+----+-------+-------+
| 2  | John  | 90    |
| 5  | Carol | 98    |
+----+-------+-------+
2 rows in set (0.00 sec)
raja
Published on 20-May-2019 16:25:39
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