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MySQL query to display record with maximum count values in a group with other column values?
For this, use the GROUP BY HAVING clause. Let us first create a table −
mysql> create table DemoTable ( Value int ); Query OK, 0 rows affected (0.54 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(99); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(99); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(99); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(99); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.11 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------+ | Value | +-------+ | 88 | | 88 | | 88 | | 99 | | 99 | | 99 | | 99 | | 100 | | 100 | | 88 | | 88 | +-------+ 11 rows in set (0.00 sec)
Following is the query to display records with maximum count values in a group with other columns. Here, we have repeated values in a column and we are ordering the values. After ORDER BY DESC, we are fetching the first value and displaying its count in a new column “NumberOfCount” −
mysql> select Value,count(*) as NumberOfCount
from DemoTable
group by Value
having count(*)=(select count(*) as NumberOfCount
from DemoTable
group by Value
order by NumberOfCount desc
limit 1);This will produce the following output −
+-------+---------------+ | Value | NumberOfCount | +-------+---------------+ | 88 | 5 | +-------+---------------+ 1 row in set (0.00 sec)
Updated on: 04-Oct-2019
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