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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
0
rustypoot
Asked:
rustypoot
  • 2
1 Solution
 
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.
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