Count values greater and less than a specific number and display count in separate MySQL columns?

For this, you can use COUNT() along with CASE STATEMENT. Let us first create a table −

mysql> create table DemoTable
(
   Score int
);
Query OK, 0 rows affected (0.71 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(40);
Query OK, 1 row affected (0.77 sec)
mysql> insert into DemoTable values(48);
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable values(59);
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values(33);
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable values(38);
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable values(89);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values(35);
Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-------+
| Score |
+-------+
|    40 |
|    48 |
|    59 |
|    33 |
|    38 |
|    89 |
|    35 |
+-------+
7 rows in set (0.00 sec)

Following is the query to count values greater and less than a specific number and display count in separate columns −

mysql> select count( case when Score > 45 then 1 end) as CountOfValueGreaterThan45,
   count( case when Score <= 45 then 1 end) as CountOfValueLessThanOrEqualTo45
   from DemoTable;

This will produce the following output −

+---------------------------+---------------------------------+
| CountOfValueGreaterThan45 | CountOfValueLessThanOrEqualTo45 |
+---------------------------+---------------------------------+
|                         3 |                               4 |
+---------------------------+---------------------------------+
1 row in set (0.00 sec)

AmitDiwan

Published on 09-Oct-2019 12:07:28

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