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MySQL query to delete a row if two columns are equal
Use DELETE for this. Let us first create a table −
mysql> create table DemoTable ( Name varchar(40), Score1 int , Score2 int ); Query OK, 0 rows affected (2.71 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('John',56,76);
Query OK, 1 row affected (0.66 sec)
mysql> insert into DemoTable values('Chris',77,77);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('David',89,98);
Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------+--------+--------+ | Name | Score1 | Score2 | +-------+--------+--------+ | John | 56 | 76 | | Chris | 77 | 77 | | David | 89 | 98 | +-------+--------+--------+ 3 rows in set (0.00 sec)
Following is the query to delete a row if two columns are equal −
mysql> delete from DemoTable where Score1=Score2; Query OK, 1 row affected (0.29 sec)
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+-------+--------+--------+ | Name | Score1 | Score2 | +-------+--------+--------+ | John | 56 | 76 | | David | 89 | 98 | +-------+--------+--------+ 2 rows in set (0.00 sec)
Updated on: 07-Oct-2019
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