To count days in date range, you need to find the difference between dates using DATEDIFF().
Let us first create a table:
mysql> create table DemoTable730 ( StartDate date, EndDate date ); Query OK, 0 rows affected (0.45 sec)
Insert some records in the table using insert command:
mysql> insert into DemoTable730 values('2019-01-21','2019-07-21'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable730 values('2018-10-11','2018-12-31'); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable730 values('2016-01-01','2016-12-31'); Query OK, 1 row affected (0.14 sec)
Display all records from the table using select statement:
mysql> select *from DemoTable730;
This will produce the following output -
+------------+------------+ | StartDate | EndDate | +------------+------------+ | 2019-01-21 | 2019-07-21 | | 2018-10-11 | 2018-12-31 | | 2016-01-01 | 2016-12-31 | +------------+------------+ 3 rows in set (0.00 sec)
Following is the query to count days in date range:
mysql> select ABS(DATEDIFF(StartDate,EndDate)) AS Days from DemoTable730;
This will produce the following output -
+------+ | Days | +------+ | 181 | | 81 | | 365 | +------+ 3 rows in set (0.00 sec)