How to get the population from current census who do not have the admission order [SQL SEVER 2008]

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SQL-Server-2008

I am able to get the population with admission order from current census and the total census from the queries below respectively. For one time I can get the total population and subtract the population with admission order to get the "population with no admission order" but now i need to schedule this report to run daily and I tried different ways using NOT IN, LEFT JOIN and NOT EXISTS but it is not working. Can any one please suggest me what I am doin wrong here:

Query for patient with admission order:

SQL

SELECT DISTINCT  a.PatientAccountID
,a.VisitStartDateTime


FROM PatientVisitInfo a with (nolock)
INNER JOIN HOrder  b with (nolock)
ON a.PatientVisit_oid=b.PatientVisit_oid


WHERE a.VisitTypeCode='IP'
AND a.VisitStartDateTime >= GETDATE()-1
AND(b.OrderAbbr ='A_AdmitObs'
or b.OrderAbbr ='A_AdmitInpt'
or b.OrderAbbr ='A_CngInpt'
or b.OrderAbbr ='A_CngObs')

ORDER BY  a.PatientAccountID

query for current census:

SQL

SELECT DISTINCT  a.PatientAccountID
,a.VisitStartDateTime


FROM PatientVisitInfo a with (nolock)
INNER JOIN HOrder  b with (nolock)
ON a.PatientVisit_oid=b.PatientVisit_oid

WHERE a.VisitTypeCode='IP'
AND a.VisitStartDateTime >= GETDATE()-1

ORDER BY  a.PatientAccountID

Query I tried for patient with no admission order

SQL

SELECT DISTINCT  a.PatientAccountID
,a.VisitStartDateTime

FROM PatientVisitInfo a with (nolock)
INNER JOIN HOrder  b with (nolock)
ON a.PatientVisit_oid=b.PatientVisit_oid

WHERE a.VisitTypeCode='IP'
AND a.VisitStartDateTime >= GETDATE()-1
AND(b.OrderAbbr <>'A_AdmitObs'
or b.OrderAbbr <>'A_AdmitInpt'
or b.OrderAbbr <>'A_CngInpt'
or b.OrderAbbr <>'A_CngObs')

ORDER BY  a.PatientAccountID

BUT the results of this query will give me the total census.

Thank you for any help!!

Posted 22-Dec-14 7:02am

alicashah

Updated 22-Dec-14 7:15am

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Lolo1986 · Accepted Answer · 2014-12-22T07:15:00

Hi,

When you said a patient with no admission order, is it a patient without any records in your Horder table? if it is the case, you need to do this,

SQL

SELECT DISTINCT  a.PatientAccountID
,a.VisitStartDateTime

FROM PatientVisitInfo a with (nolock)
LEFT JOIN HOrder  b with (nolock)
ON a.PatientVisit_oid=b.PatientVisit_oid

WHERE a.VisitTypeCode='IP'
AND a.VisitStartDateTime >= GETDATE()-1
AND b.PatientVisit_oid IS NULL

ORDER BY  a.PatientAccountID

Now if you want the patient not having b.OrderAbbr, use a sub query and left join.

SQL

SELECT DISTINCT  a.PatientAccountID
,a.VisitStartDateTime

FROM PatientVisitInfo a with (nolock)
LEFT JOIN (SELECt * FROM HOrder  with (nolock)
WHERE b.OrderAbbr = 'A_AdmitObs'
or b.OrderAbbr = 'A_AdmitInpt'
or b.OrderAbbr = 'A_CngInpt'
or b.OrderAbbr = 'A_CngObs') AS B
ON a.PatientVisit_oid=b.PatientVisit_oid

WHERE a.VisitTypeCode='IP'
AND a.VisitStartDateTime >= GETDATE()-1
AND b.PatientVisit_oid IS NULL

ORDER BY  a.PatientAccountID

Let me know which one could work for you.