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MySQL query with OR & AND conditions
Let us first create a table −
mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(20), -> Age int -> ); Query OK, 0 rows affected (0.63 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(Name,Age) values('John',21);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable(Name,Age) values(Null,20);
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable(Name,Age) values('David',23);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable(Name,Age) values('Carol',null);
Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
Output
+----+-------+------+ | Id | Name | Age | +----+-------+------+ | 1 | John | 21 | | 2 | NULL | 20 | | 3 | David | 23 | | 4 | Carol | NULL | +----+-------+------+ 4 rows in set (0.00 sec)
Following is the query with OR & AND conditions −
mysql> select *from DemoTable -> where Name='David' OR (Name is null AND Age=20);
Output
+----+-------+------+ | Id | Name | Age | +----+-------+------+ | 2 | NULL | 20 | | 3 | David | 23 | +----+-------+------+ 2 rows in set (0.00 sec)
Updated on 30-Jul-2019 22:30:26
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