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How to SELECT records if the absolute value of the difference between two values is greater than a certain number?
To SELECT records if the absolute value of the difference between two values is greater than a certain number, following is the syntax:
select *from yourTableName where abs(yourColumnName1-yourColumnName2) >= yourCertainNumber;
Let us first create a table:
mysql> create table DemoTable ( Number1 int , Number2 int ); Query OK, 0 rows affected (0.59 sec)
Following is the query to insert some records in the table using insert command:
mysql> insert into DemoTable values(10,20); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(100,200); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(400,300); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(1000,500); Query OK, 1 row affected (0.15 sec)
Following is the query to display records from the table using select command:
mysql> select *from DemoTable;
This will produce the following output
+---------+---------+ Number1 | Number2 | +---------+---------+ | 10 | 20 | | 100 | 200 | | 400 | 300 | | 1000 | 500 | +---------+---------+ 4 rows in set (0.00 sec)
Let us now write a query to SELECT records if the absolute value of the difference between two values is greater than a certain number. Here, our number is 100, with which the absolute value will be compared:
mysql> select *from DemoTable where abs(Number1-Number2) > 100;
This will produce the following output:
+---------+---------+ | Number1 | Number2 | +---------+---------+ | 1000 | 500 | +---------+---------+ 1 row in set (0.02 sec)
Updated on: 30-Jul-2019
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