SQL Server - How to pull data for October of Previous Year

Below is my SQL so far:

SELECT DISTINCT
D.Account,
R.Account as RAccount,
D.MRN,
D.AdmitDate,
D.[Discharge Date],
R.AdmitDate as RAdmitDate,
R.[Discharge Date] as RDischargeDate,
DATEDIFF(day, D.[Discharge Date], R.ADMITDATE) as DaysSince,
R.AdmitDX AS RAdmitDx,--#4
Dx.Description as RAdmitDxDesc --#4
FROM  
Encounter_ALL_ADM D WITH (NOLOCK)
      LEFT OUTER JOIN Encounter_ALL_ADM R WITH (NOLOCK)
      ON D.MRN = R.MRN --AND
      AND D.Account <> R.Account
        --ON D.EID = R.EID
      --AND D.Account = R.Account
      --AND D.Institution = 'SMMC'
      AND R.PatientType = 'IN'
      AND (R.ADMITDATETIME - D.DISCHARGEDATETIME) BETWEEN 0 and 30
        LEFT OUTER JOIN Dictionary_Diagnosis_Code Dx --#4
        ON Dx.Code = R.AdmitDX --#4
        --AND Dx.Code = D.AdmitDX
        AND Dx. [EFFECTIVE_DATE] >= '01-OCT-2013'
   
WHERE
D.AccountStatus_PatientType IN ('DIS_IN')
AND D.DISCHARGEDATETIME between DATEADD(mm, -12, GetDate())and DATEADD(mm, 0, GetDate())
AND D.PatientType = 'IN'


Question - Where it says 'Dx. [EFFECTIVE_DATE] >= '01-OCT-2013'' - I need to pull the data as of October 1 of previous year. No matter when the report is run
rustypootAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Scott PletcherSenior DBACommented:
AND Dx. [EFFECTIVE_DATE] >= DATEADD(MONTH, 9, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) - 1, 0))

Btw:
AND D.DISCHARGEDATETIME >= DATEADD(mm, -12, GetDate()) AND D.DISCHARGEDATETIME < DATEADD(mm, 0, GetDate())
*
0
rustypootAuthor Commented:
Thanks Scott! Month should be 10 right?

Dx. [EFFECTIVE_DATE] >= DATEADD(MONTH, 10, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) - 1, 0))

Not sure what you mean for the SQL below!

Btw:
AND D.DISCHARGEDATETIME >= DATEADD(mm, -12, GetDate()) AND D.DISCHARGEDATETIME < DATEADD(mm, 0, GetDate())
0
Scott PletcherSenior DBACommented:
The year will start on 01/01 (Jan 01), so you need to add 9 months to get to month 10/October :-).

Sorry, very little time available, so I wasn't clear.  I was suggesting using that code instead of your original code using BETWEEN.  BETWEEN is not recommended for use with date/datetime.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2008

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.