SQL to separate YYYY MM to fiscal year - sql

Question

I have a column which states month and year YYYY MM. I've separated those into two columns (Year and Month). The problem is, the year is the calendar year whereas ideally I need the fiscal year I use (Apr 01 to Mar 31 - This will never change).
Other solutions I've seen are based on date format, whereas my original column is string.
I need a statement that returns the fiscal year for my new year column instead of the calendar year.
My current statement is:
Select Month,
parsename(replace(Month,' ','.'),1) as MonthM,
parsename(replace(Month,' ','.'),2) as Year
FROM TblTrade
Which works to separate the columns.
So expected results would be for example:
Feb 15 becomes Feb and 2015.
Apr 15 becomes Apr and 2016.
Please advise.

Answer 1

Sql server:
declare #date datetime = getdate();
select
(YEAR(DATEADD(Month,-((DATEPART(Month,#date)+5) %12),#date))) AS Financial_Year
Assuming April is month 1

Answer 2

Try this
select case
when to_char(to_date(column_name,'yyyy mm'),'mm') between 01 and 03
then to_char(trunc(to_date(column_name,'yyyy mm')),'yyyy')-1
else to_number(to_char(trunc(to_date(column_name,'yyyy mm')),'yyyy')) end
fiscal_year
from table_name
I'm using oracle db
This will work when column is string and has valid data i.e date in format like yyyy mm

Answer 3

Since you've read those other articles (you should really mention what research you've done in your question) and you're still having problems, I've had a play for you.
If I understand correctly, you have a varchar with YYYY MM eg
2015 01
2015 02
2015 03
2015 04
etc And you want
Jan 2014
Feb 2014
Mar 2014
Apr 2015
Here goes...
Setup some test data
DROP TABLE IF EXISTS #Test;
WITH Dates AS (
SELECT CAST(GETDATE() AS DATE) AS Date
UNION ALL
SELECT DATEADD(MONTH, -1, Date) FROM Dates
WHERE Date > '20140101'
)
SELECT DISTINCT
CONVERT(VARCHAR(4), YEAR(Date)) + ' ' +RIGHT(CONVERT(VARCHAR(6), Date, 112), 2) YearMonth
INTO #Test
FROM Dates
OPTION (MAXRECURSION 0);
SELECT * FROM #Test
YearMonth
---------
2013 12
2014 01
2014 02
2014 03
2014 04
2014 05
etc
Find Fiscal Year
SELECT
LEFT(YEARMONTH, 4) Year
,RIGHT(YEARMONTH, 2) Month
,LEFT(DATENAME(MONTH , DateAdd( month , CONVERT(INT,RIGHT(YEARMONTH, 2)) , -1 )), 3) MonthName
,IIF(CONVERT(INT, RIGHT(YEARMONTH, 2)) >= 4, CONVERT(INT,LEFT(YEARMONTH, 4)), CONVERT(INT,LEFT(YEARMONTH, 4)-1 )) FiscalYear
FROM #TEST
Year Month MonthName FiscalYear
---- ----- --------- -----------
2013 12 Dec 2013
2014 01 Jan 2013
2014 02 Feb 2013
2014 03 Mar 2013
2014 04 Apr 2014
2014 05 May 2014
2014 06 Jun 2014
etc
You could put the year/month parsing in a sub query just to make the code cleaner and some of the nasty formatting could be replaced with FORMAT since you're on 2012.
Hope this is what you're after and helps.

Answer 4

Since you included the Tableau tag, I'll describe the Tableau approach -- which is a little different than the other answers since you tend to specify what you want to Tableau, and let its driver generate the necessary SQL for your database.
First, it will work best if you have a single field that has datatype DATE instead of separate fields for month and year.
You can then roll up dates to the nearest year, month, day etc (actually truncating to the beginning of the period) or extract specific parts of dates year, month, day etc as needed for grouping/display.
The added benefit of working with a true DATE datatype is that you can tell Tableau the beginning of your fiscal year for each data source, and it will sort dates appropriately. Just right click on a data source and set the date properties. You can also set the start of the week and the date format.