Can I get the count of repeated values in a column with MySQL?



Yes, you can use ORDER BY DESC with GROUP BY. Let us first create a table −

mysql> create table DemoTable    -> (    -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    -> PostMessage varchar(100)    -> ); Query OK, 0 rows affected (0.69 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(PostMessage) values('Hi'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(PostMessage) values('Hello'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(PostMessage) values('Hi'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(PostMessage) values('Awesome'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(PostMessage) values('Hello'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(PostMessage) values('Hi'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable(PostMessage) values('Awesome'); Query OK, 1 row affected (0.33 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+----+-------------+ | Id | PostMessage | +----+-------------+ |  1 | Hi          | |  2 | Hello       | |  3 | Hi          | |  4 | Awesome     | |  5 | Hello       | |  6 | Hi          | |  7 | Awesome     | +----+-------------+ 7 rows in set (0.00 sec)

Following is the query to get the highest amount of a value in a MySQL database −

mysql> select PostMessage,count(Id) from DemoTable group by PostMessage     -> order by count(Id) DESC;

Output

This will produce the following output −

+-------------+-----------+ | PostMessage | count(Id) | +-------------+-----------+ | Hi          | 3         | | Hello       | 2         | | Awesome     | 2 | +-------------+-----------+ 3 rows in set (0.00 sec)

If you want only highest, you can use the following query −

mysql> select PostMessage,count(Id)  from DemoTable group by PostMessage having count(Id) > 2;

Output

This will produce the following output −

+-------------+-----------+ | PostMessage | count(Id) | +-------------+-----------+ | Hi          | 3         | +-------------+-----------+ 1 row in set (0.00 sec)
Updated on: 2020-06-30T13:16:31+05:30

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