How can I avoid too many OR statements in a MySQL query?
Use MySQL IN() to avoid too many OR statements. Let us first create a table −
mysql> create table DemoTable
(
Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
Name varchar(40)
);
Query OK, 0 rows affected (0.89 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(Name) values('Chris');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable(Name) values('Robert');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable(Name) values('Mike');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable(Name) values('Sam');
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable(Name) values('David');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----+--------+
| Id | Name |
+----+--------+
| 1 | Chris |
| 2 | Robert |
| 3 | Mike |
| 4 | Sam |
| 5 | David |
+----+--------+
5 rows in set (0.00 sec)
Following is the query to avoid too many OR statements in a MySQL query i.e. using IN() −
mysql> select *from DemoTable where Id IN(1,3,5);
This will produce the following output −
+----+-------+
| Id | Name |
+----+-------+
| 1 | Chris |
| 3 | Mike |
| 5 | David |
+----+-------+
3 rows in set (0.00 sec)
Published on 09-Oct-2019 11:39:52
