How can we fetch alternate even-numbered records from MySQL table?

To understand this concept we are using the data from table ‘Information’ as follows −

mysql> Select * from Information;
+----+---------+
| id | Name    |
+----+---------+
|  1 | Gaurav  |
|  2 | Ram     |
|  3 | Rahul   |
|  4 | Aarav   |
|  5 | Aryan   |
|  6 | Krishan |
+----+---------+
6 rows in set (0.00 sec)

Now, the query below will fetch the alternate even-numbered records from the above table ‘Information’ −

mysql> Select id,Name from information group by id having mod(id,2) = 0;
+----+---------+
| id | Name    |
+----+---------+
|  2 | Ram     |
|  4 | Aarav   |
|  6 | Krishan |
+----+---------+
3 rows in set (0.00 sec)

Sravani S

Published on 22-Feb-2018 12:36:31