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MySQL filtering by multiple columns?
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)
Updated on: 30-Jul-2019
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