Count Rows Where More Than Three Columns Are True in MySQL

To count where more than three column values are true, you can use WHERE clause. Let us first create a table −

mysql> create table DemoTable
   -> (
   -> isMarried boolean,
   -> isActive boolean,
   -> isMember boolean,
   -> isOn boolean
   -> );
Query OK, 0 rows affected (0.61 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(true,false,true,false);
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable values(false,false,false,false);
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable values(true,true,true,true);
Query OK, 1 row affected (0.24 sec)

mysql> insert into DemoTable values(true,false,false,true);
Query OK, 1 row affected (0.55 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

+-----------+----------+-----------+------+
| isMarried | isActive | isMember  | isOn |
+-----------+----------+-----------+------+
| 1         | 0        | 1         | 0    |
| 0         | 0        | 0         | 0    |
| 1         | 1        | 1         | 1    |
| 1         | 0        | 0         | 1    |
+-----------+----------+-----------+------+
4 rows in set (0.00 sec)

Following is the query to count where more than three column values are true −

mysql> select *from DemoTable where isMarried+isActive+isMember+isOn >=3;

Output

+-----------+----------+-----------+------+
| isMarried | isActive | isMember  | isOn |
+-----------+----------+-----------+------+
| 1         | 1        | 1         | 1    |
+-----------+----------+-----------+------+
1 row in set (0.00 sec)