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MySQL query to sort increasing the difference between n and the value in the table?
For sort by distance, use ORDER BY ABS(). Let us first create a table −
mysql> create table DemoTable ( Number int ); Query OK, 0 rows affected (1.16 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(101); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(102); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable values(103); Query OK, 1 row affected (0.84 sec) mysql> insert into DemoTable values(104); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(105); Query OK, 1 row affected (0.73 sec) mysql> insert into DemoTable values(106); Query OK, 1 row affected (0.95 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+--------+ | Number | +--------+ | 100 | | 101 | | 102 | | 103 | | 104 | | 105 | | 106 | +--------+ 7 rows in set (0.00 sec)
Following is the query to sort by distance. Here, n is 103 −
mysql> select *from DemoTable order by abs(103-Number);
This will produce the following output −
+--------+ | Number | +--------+ | 103 | | 102 | | 104 | | 101 | | 105 | | 100 | | 106 | +--------+ 7 rows in set (0.17 sec)
Updated on: 04-Oct-2019
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