MySQL query to get data dynamically based on financial year - mysql

Question

I want to select fields dynamically based on financial year (i.e., for the year of Apr'18 to Mar'19).
I have data in a table exact as given below :
ROWNO YEAR MONTH
1 2016 1
2 2016 2
3 2016 6
4 2017 7
5 2017 5
6 2018 4
7 2018 5
8 2018 6
9 2018 7
10 2018 8
11 2018 9
12 2018 10
13 2018 11
14 2018 12
15 2019 1
16 2019 2
17 2019 3
18 2019 3
19 2017 4
20 2017 1
21 2017 2
22 2018 3
I want to get the result as shown below for the financial year 2018-19 are
ROWNO YEAR MONTH
6 2018 4
7 2018 5
8 2018 6
9 2018 7
10 2018 8
11 2018 9
12 2018 10
13 2018 11
14 2018 12
15 2019 1
16 2019 2
17 2019 3
I used Query
SELECT * FROM rup_calendar WHERE YEAR BETWEEN YEAR(CURDATE()) AND YEAR(CURDATE())+1;
but not able to get exact result.
Please give me the query to get the result as given above.

Answer 1

Given the data you have your approach is not far away
select rowno,year,month
from t
where year * 100 + month between
case when month(now()) < 4 then (year(now()) - 1) * 100 + 3
else year(now()) * 100 + 4
end
and
case when month(now()) < 4 then (year(now())) * 100 + 3
else (year(now()) + 1) * 100 + 4
end
Notice I have calulated a yearmonth field to ease comparison. Note I haven't fully tested this and you should do so by substituting an # variable for now() to test.