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Can we use WHERE, AND & OR in a single MySQL query?
Yes, we can use all of them in a single query. Let us first create a table −
mysql> create table DemoTable ( StudentId int, StudentFirstName varchar(20), StudentLastName varchar(20), StudentAge int ); Query OK, 0 rows affected (0.53 sec)
Insert records in the table using insert command −
mysql> insert into DemoTable values(100,'John','Smith',23); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(101,'Carol','Taylor',24); Query OK, 1 row affected (0.62 sec) mysql> insert into DemoTable values(103,'John','Doe',22); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values(104,'Adam','Smith',23); Query OK, 1 row affected (0.18 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------+------------------+-----------------+------------+ | StudentId | StudentFirstName | StudentLastName | StudentAge | +-----------+------------------+-----------------+------------+ | 100 | John | Smith | 23 | | 101 | Carol | Taylor | 24 | | 103 | John | Doe | 22 | | 104 | Adam | Smith | 23 | +-----------+------------------+-----------------+------------+ 4 rows in set (0.00 sec)
Following is the query to use MySQL WHERE, AND & OR in a single MySQL query to fetch records−
mysql> select *from DemoTable where StudentFirstName='John' AND StudentLastName='Doe' OR StudentAge=26;
This will produce the following output −
+-----------+------------------+-----------------+------------+ | StudentId | StudentFirstName | StudentLastName | StudentAge | +-----------+------------------+-----------------+------------+ | 103 | John | Doe | 22 | +-----------+------------------+-----------------+------------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
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