Get the maximum count of distinct values in a separate column with MySQL

Use COUNT() function along with GROUP BY clause for this. Let us first create a table −

mysql> create table DemoTable -> ( -> Name varchar(100) -> ); Query OK, 0 rows affected (0.69 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Sam'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Mike'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable values('Sam'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('Carol'); Query OK, 1 row affected (0.18 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+-------+ | Name  | +-------+ | John  | | Sam   |   | John  | | Mike | | John | | Sam | | Carol | +-------+ 7 rows in set (0.00 sec)

Here is the query to maximum count of distinct values in SQL −

mysql> select Name, count(*) as freq from DemoTable group by Name order by count(*) desc limit 1;

Output

This will produce the following output −

+------+------+ | Name | freq | +------+------+ | John | 3 | +------+------+ 1 row in set (0.00 sec)