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Dateadd error when querying between two dates.

Posted on 2009-07-07
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Last Modified: 2012-05-07
SELECT     lngPatientid
FROM         tblHPNRT
HAVING      (MAX(dtmcreated) > DATEADD([month], - 6, dtmcreated))


I am getting an error when I try to query to see if an id show up 6 months prior to the last date added.   Please can you tell me what is wrong with my query.  Thanks
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Question by:running32
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Aneesh Retnakaran earned 500 total points
ID: 24797392
SELECT     lngPatientid
FROM         tblHPNRT
GROUP BY lngPatientid
HAVING      (MAX(dtmcreated) > DATEADD([month], - 6, dtmcreated))
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LVL 40

Expert Comment

by:mrjoltcola
ID: 24797461
You could also write as:

SELECT DISTINCT lngPatientid
FROM         tblHPNRT
WHERE dtmcreated > DATEADD([month], - 6, dtmcreated)
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