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How to select Patients with >5 Appts and get the very 1st Appt date in same Script

How to select Patients with >5 Appts and get the very 1st Appt date in same Script

How to select Patients with >5 Appts and get the very 1st Appt date in same Script

(OP)
Hi all

I have written a report to identify referrals with more than 5 appointments, and have been asked to add in the first appointment date. My TSQL script uses ROW_NUMBER() over (partition by a.Uniqueref order by care_contact_dttm) row where Row>5 to select the patients, this works fine.

I know the first appointment date should be as above where Row=1 (or is there another way) , but I but do not know how to get in the same script.

Any ideas welcome. I am using SQL Server 2008 R2.

RE: How to select Patients with >5 Appts and get the very 1st Appt date in same Script

Try thinking about it this way. You want the first appointment date for each referral where there are more than 5 appointments. So, the subquery is the behind the WHERE clause.

Something like SELECT TOP 1 T1.whatever columns FROM table T1 WHERE T1.referral ID = (SELECT T2.referral ID from table T2 HAVING COUNT (T2.appointment date) > 5 GROUP BY T2.referral ID, T2.appointment date) ORDER BY T1.appointment date

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