MySQL query to select distinct order by id



For this, use ORDER BY MAX(). Let us first create a table −

mysql> create table DemoTable    -> (    -> Id int,    -> Name varchar(100)    -> ); Query OK, 0 rows affected (0.81 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(10,'John'); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(10,'John'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(20,'Sam'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(20,'Sam'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(30,'David'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(30,'David'); Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+------+-------+ | Id   | Name  | +------+-------+ |   10 | John  | |   10 | John  | |   20 | Sam   | |   20 | Sam   | |   30 | David | |   30 | David | +------+-------+ 6 rows in set (0.00 sec)

Following is the query to select distinct order by id −

mysql> select Name from DemoTable    -> group by Name    -> order by max(Id) DESC    -> limit 2;

Output

This will produce the following output −

+-------+ | Name  | +-------+ | David | | Sam   | +-------+ 2 rows in set (0.06 sec)
Updated on: 2020-06-30T13:41:18+05:30

980 Views

Kickstart Your Career

Get certified by completing the course

Get Started
Advertisements