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How to get the count of a specific value in a column with MySQL?
Let us first create a table −
mysql> create table DemoTable ( Id int, Name varchar(100) ); Query OK, 0 rows affected (1.40 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(100,'John'); Query OK, 1 row affected (0.44 sec) mysql> insert into DemoTable values(101,'Chris'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(102,'Chris'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(103,'Chris'); Query OK, 1 row affected (1.05 sec) mysql> insert into DemoTable values(104,'David'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(105,'Chris'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(106,'Carol'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values(107,'Bob'); Query OK, 1 row affected (0.18 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+------+-------+ | Id | Name | +------+-------+ | 100 | John | | 101 | Chris | | 102 | Chris | | 103 | Chris | | 104 | David | | 105 | Chris | | 106 | Carol | | 107 | Bob | +------+-------+ 8 rows in set (0.00 sec)
Following is the query to get the count of a specific value in a column i.e. ‘Chris’ here −
mysql> select count(*) from DemoTable where Name='Chris';
This will produce the following output −
+----------+ | count(*) | +----------+ | 4 | +----------+ 1 row in set (0.00 sec)
Updated on: 02-Jul-2020
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