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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)
Updated on: 30-Jun-2020
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