SQL Total of Column - sql-server-2008

Question

Hello I have a query where I am getting counts of records that are group by month (see example result below). What I would like SQL to do is have an additional Total row at the bottom which will be a sum of all the values in the "AccountID" column. I have highlighted the "Total" row where I would this addition to my current result set. Appreciate any help!!
Below is my current query I am using to gather the data:
SELECT Distinct
Month = MONTH(pv.VisitStartDateTime)
,AccountID_Count = count(pv.AccountID)
FROM hpavisit pv With ( NOLOCK )
left outer join HPat pt With ( NOLOCK )
ON pv.Pat_OID = pt.ObjectID
and pt.isdeleted = 0
Left Outer Join HCareUnit HCU With ( NOLOCK )
on HCU.ObjectID = pv.PatLocation_oid
Left Outer Join HCareUnit HCU1 With ( NOLOCK )
on HCU1.ObjectID = pv.UnitContacted_oid
WHERE pv.PatLocation_oid <> 0 and pv.PatLocation_oid is not null
and pv.IsDeleted = 0
and pv.VisitStartDateTime > '08/31/2014 23:23:59'
and pv.VisitStartDateTime < '03/01/2015'
GROUP BY MONTH(pv.VisitStartDateTime)

Answer 1

On SQL2008 you can add sumary row
SELECT Distinct
Month = MONTH(pv.VisitStartDateTime)
,AccountID_Count = count(pv.AccountID)
FROM hpavisit pv With ( NOLOCK )
left outer join HPat pt With ( NOLOCK )
ON pv.Pat_OID = pt.ObjectID
and pt.isdeleted = 0
Left Outer Join HCareUnit HCU With ( NOLOCK )
on HCU.ObjectID = pv.PatLocation_oid
Left Outer Join HCareUnit HCU1 With ( NOLOCK )
on HCU1.ObjectID = pv.UnitContacted_oid
WHERE pv.PatLocation_oid <> 0 and pv.PatLocation_oid is not null
and pv.IsDeleted = 0
and pv.VisitStartDateTime > '08/31/2014 23:23:59'
and pv.VisitStartDateTime < '03/01/2015'
GROUP BY MONTH(pv.VisitStartDateTime)
Union ALL
SELECT Distinct
'TOTAL',
,AccountID_Count = count(pv.AccountID)
FROM hpavisit pv With ( NOLOCK )
left outer join HPat pt With ( NOLOCK )
ON pv.Pat_OID = pt.ObjectID
and pt.isdeleted = 0
Left Outer Join HCareUnit HCU With ( NOLOCK )
on HCU.ObjectID = pv.PatLocation_oid
Left Outer Join HCareUnit HCU1 With ( NOLOCK )
on HCU1.ObjectID = pv.UnitContacted_oid
WHERE pv.PatLocation_oid <> 0 and pv.PatLocation_oid is not null
and pv.IsDeleted = 0
and pv.VisitStartDateTime > '08/31/2014 23:23:59'
and pv.VisitStartDateTime < '03/01/2015'
On SQL20008R2 you can try:
SELECT Distinct
Month = MONTH(pv.VisitStartDateTime)
,AccountID_Count = count(pv.AccountID)
FROM hpavisit pv With ( NOLOCK )
left outer join HPat pt With ( NOLOCK )
ON pv.Pat_OID = pt.ObjectID
and pt.isdeleted = 0
Left Outer Join HCareUnit HCU With ( NOLOCK )
on HCU.ObjectID = pv.PatLocation_oid
Left Outer Join HCareUnit HCU1 With ( NOLOCK )
on HCU1.ObjectID = pv.UnitContacted_oid
WHERE pv.PatLocation_oid <> 0 and pv.PatLocation_oid is not null
and pv.IsDeleted = 0
and pv.VisitStartDateTime > '08/31/2014 23:23:59'
and pv.VisitStartDateTime < '03/01/2015'
GROUP GROUP BY GROUPING SETS(
(MONTH(pv.VisitStartDateTime),
())