MySQL query to ORDER BY records on the basis of modulus result

MySQLMySQLi Database

For this, use ORDER BY with a modulus operator. Let us first create a table −

mysql> create table DemoTable
(
   StudentId int,
   StudentName varchar(100)
);
Query OK, 0 rows affected (1.88 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(100,'Chris');
Query OK, 1 row affected (0.41 sec)
mysql> insert into DemoTable values(101,'Robert');
Query OK, 1 row affected (0.30 sec)
mysql> insert into DemoTable values(102,'David');
Query OK, 1 row affected (0.94 sec)
mysql> insert into DemoTable values(103,'Mike');
Query OK, 1 row affected (0.23 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-----------+-------------+
| StudentId | StudentName |
+-----------+-------------+
|       100 | Chris       |
|       101 | Robert      |
|       102 | David       |
|       103 | Mike        |
+-----------+-------------+
4 rows in set (0.00 sec)

Here is the query to order by with modulus −

mysql> select StudentId,StudentName,StudentId % 2,StudentId % 3 from DemoTable order by StudentId % 2,StudentId % 3;

This will produce the following output −

+-----------+-------------+---------------+---------------+
| StudentId | StudentName | StudentId % 2 | StudentId % 3 |
+-----------+-------------+---------------+---------------+
|       102 | David       |             0 |             0 |
|       100 | Chris       |             0 |             1 |
|       103 | Mike        |             1 |             1 |
|       101 | Robert      |             1 |             2 |
+-----------+-------------+---------------+---------------+
4 rows in set (0.00 sec)
raja
Published on 30-Sep-2019 07:06:17
Advertisements