How to sum current month records in MySQL?

To sum current month records, use the SUM() and MONTH() function. Let us first create a table −

mysql> create table DemoTable1889
   (
   DueDate date,
   Amount int
   );
Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1889 values('2019-12-11',500);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1889 values('2019-11-11',1000);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1889 values('2018-12-04',700);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1889 values('2017-12-10',300);
Query OK, 1 row affected (0.00 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1889;

This will produce the following output −

+------------+--------+
| DueDate    | Amount |
+------------+--------+
| 2019-12-11 |    500 |
| 2019-11-11 |   1000 |
| 2018-12-04 |    700 |
| 2017-12-10 |    300 |
+------------+--------+
4 rows in set (0.00 sec)

The current date is as follows −

mysql> select curdate();
+------------+
| curdate()  |
+------------+
| 2019-12-10 |
+------------+
1 row in set (0.00 sec)

Here is the query to sum current month records in MySQL −

mysql> select sum(Amount) from DemoTable1889 where MONTH(DueDate)=MONTH(curdate());

This will produce the following output −

+-------------+
| sum(Amount) |
+-------------+
|        1500 |
+-------------+
1 row in set (0.00 sec)