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Implement WHERE IN vs OR in MySQL with similar example
The IN uses an index while OR does not use an index in MySQL.
Let us first create a table −
mysql> create table DemoTable711 ( Id int, Name varchar(100) ); Query OK, 0 rows affected (0.92 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable711 values(100,'Chris'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable711 values(101,'Robert'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable711 values(102,'Carol'); Query OK, 1 row affected (0.35 sec) mysql> insert into DemoTable711 values(103,'Mike'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable711 values(104,'Sam'); Query OK, 1 row affected (0.15 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable711;
This will produce the following output -
+------+--------+ | Id | Name | +------+--------+ | 100 | Chris | | 101 | Robert | | 102 | Carol | | 103 | Mike | | 104 | Sam | +------+--------+ 5 rows in set (0.00 sec)
Following is the query for IN() method −
mysql> select *from DemoTable711 where Id IN(101,103,104);
This will produce the following output -
+------+--------+ | Id | Name | +------+--------+ | 101 | Robert | | 103 | Mike | | 104 | Sam | +------+--------+ 3 rows in set (0.03 sec)
Following is the query for OR −
mysql> select *from DemoTable711 where Id=101 OR Id=103 OR Id=104;
This will produce the following output -
+------+--------+ | Id | Name | +------+--------+ | 101 | Robert | | 103 | Mike | | 104 | Sam | +------+--------+ 3 rows in set (0.00 sec)
Updated on: 22-Aug-2019
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