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Update query with MAX and GROUP BY with other fields

Medium Priority
406 Views
Last Modified: 2012-05-07
I have the following table-structure (which I cannot change)
qPortfolioAndValue (PK: ObjID_Cportfolio) - Account (PK: ObjID, FK: ObjID_Cportfolio)
     qPortfolioAndValue has 0 or more records in Account
Account (PK: ObjID) - cashMovement (PK: ObjID, FK: ObjID_CAccount)
   an Account has 0 or more record(s) in cashMovement
Account (PK: ObjID) - securityMovement (PK: ObjID, FK: ObjID_CAccount)
   an Account has 0 or more record(s) in cashMovement

What I need:
I want to update the record in qPortfolioAndValue (fields LatestMove, LatestPrice) with the following record:
The record of cashMovement or SecurityMovement with the most recent date (= max date)

The problem is that I  manage to get the latest record of CashMovement with the following query:
select QP.ObjID_Cportfolio, Max(CM.Date)
from cashMovement CM
   left join Account A ON CM.ObjID_CAccount = A.ObjID
   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
GROUP BY QP.ObjID_Cportfolio

But I don't know how to get the other field (CM.Price) to use it in an update query
And if I got that field, how about the latest of cashMovement or securityMovement ?
Comment
Watch Question

can you please try this one?



select QP.ObjID_Cportfolio as id, Max(CM.Date) as dt,price=
(
	select c1.price
	from cashMovement C1 
	   left join Account Aa ON C1.ObjID_CAccount = A1.ObjID
	   left join uvw_qPortfolioAndValue Q1 ON A1.ObjID_Portfolio = Q1.ObjID_Cportfolio
		where q1.objID_Cportfolio=qp.objID_Cportfolio and c1.date=cm.dt
)
	from cashMovement CM 
	   left join Account A ON CM.ObjID_CAccount = A.ObjID
	   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
	GROUP BY QP.ObjID_Cportfolio

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or may be this one
select id,dt,price=
(
	select top 1 c1.price
	from cashMovement C1 
	   left join Account Aa ON C1.ObjID_CAccount = A1.ObjID
	   left join uvw_qPortfolioAndValue Q1 ON A1.ObjID_Portfolio = Q1.ObjID_Cportfolio
		where q1.objID_Cportfolio=t.id and c1.date=t.dt
)
from
(
	select QP.ObjID_Cportfolio as id, Max(CM.Date) as dt
		from cashMovement CM 
		   left join Account A ON CM.ObjID_CAccount = A.ObjID
		   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
		GROUP BY QP.ObjID_Cportfolio
) as t	

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Dirk HaestProject manager
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Author

Commented:
>> c1.date=cm.dt
The uvw_qPortfolioAndValue does not contain that Date-field.
I want to update a date-field in uvw_qPortfolioAndValue  with the latest date (= Max(CM.Date) from cashMovement)
Dirk HaestProject manager
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Author

Commented:
I think that you're second query returns what I want (I need to verify some  items).
How can I use this query to update the values in uvw_qPortfolioAndValue  (id, dt and code)

select id,dt,code=
(
	select top 1 c1.code
	from cashMovement C1 
	   left join Account A1 ON C1.ObjID_CAccount = A1.ObjID
	   left join uvw_qPortfolioAndValue Q1 ON A1.ObjID_Portfolio = Q1.ObjID_Cportfolio
		where q1.objID_Cportfolio=t.id and c1.date=t.dt
)
from
(
	select QP.ObjID_Cportfolio as id, Max(CM.Date) as dt
		from cashMovement CM 
		   left join Account A ON CM.ObjID_CAccount = A.ObjID
		   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
		GROUP BY QP.ObjID_Cportfolio
) as t	

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I didn't use date field of uvw_qPortfolioAndValue, I have tried to get latest price based on the max date comming in base query to cashMovement of inner query.
Dirk HaestProject manager
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Author

Commented:
>> I didn't use date field of uvw_qPortfolioAndValue, I have tried to get latest price based on the max date comming in base query to cashMovement of inner query.

I saw it, I was too quick with posting my comment !
ok. try the query and let me know whether it is giving proper results or not.
Dirk HaestProject manager
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Author

Commented:
As far as I saw it quickly, it seems to be ok. How can I use this query to update the values in uvw_qPortfolioAndValue  (dt and code)
here you go,

check on test DB first and do check ON condition of update, mainly field name, I may made mistake in that.



update uvw_qPortfolioAndValue set uvw_qPortfolioAndValue.date=tempdb.t.dt, uvw_qPortfolioAndValue.code=t.code from
 
(
	select id,dt,code=
	(
			select top 1 c1.code
			from cashMovement C1 
			   left join Account A1 ON C1.ObjID_CAccount = A1.ObjID
			   left join uvw_qPortfolioAndValue Q1 ON A1.ObjID_Portfolio = Q1.ObjID_Cportfolio
					where q1.objID_Cportfolio=t.id and c1.date=t.dt
	)
	from
	(
			select QP.ObjID_Cportfolio as id, Max(CM.Date) as dt
					from cashMovement CM 
					   left join Account A ON CM.ObjID_CAccount = A.ObjID
					   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
					GROUP BY QP.ObjID_Cportfolio
	) as tt  
) as t
join uvw_qPortfolioAndValue on uvw_qPortfolioAndValue.ObjID_Cportfolio=t.id and uvw_qPortfolioAndValue.date=t.dt

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Dirk HaestProject manager
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Author

Commented:
What if I need an extra field
select id,dt,code=
      (  select top 1 c1.code

Can I just alter it to
select id,dt,code,anotherfield=
      (
                  select top 1 c1.code, c1.anotherfield

it all depends on your need, but yes, you can do something like that also.
Dirk HaestProject manager
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Author

Commented:
When I try that, I got an error:

Msg 116, Level 16, State 1, Line 1
Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.
update uvw_qPortfolioAndValue 
   set uvw_qPortfolioAndValue.LatestMovementDate=t.dt, 
       uvw_qPortfolioAndValue.LatestMovementType=t.code,
       uvw_qPortfolioAndValue.LatestMovementProductObjID = t.objid_CProductMainInfo
from
(
	select id,dt,code=
	(
		select top 1 c1.code, c1.objid_Cproductmaininfo
		from securityMovement C1 
			left join Account A1 ON C1.ObjID_CAccount = A1.ObjID
			left join uvw_qPortfolioAndValue Q1 ON A1.ObjID_Portfolio = Q1.ObjID_Cportfolio
		where q1.objID_Cportfolio=tt.id and c1.date=tt.dt
	)
	from
	(
			select QP.ObjID_Cportfolio as id, Max(CM.Date) as dt
					from securityMovement CM 
					   left join Account A ON CM.ObjID_CAccount = A.ObjID
					   left join uvw_qPortfolioAndValue QP ON A.ObjID_Portfolio = QP.ObjID_Cportfolio
					GROUP BY QP.ObjID_Cportfolio
	) as tt  
) as t
join uvw_qPortfolioAndValue on uvw_qPortfolioAndValue.ObjID_Cportfolio=t.id

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Dirk HaestProject manager
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Author

Commented:
That's working, now I only have still to figure this out:
The record of cashMovement or SecurityMovement with the most recent date (= max date)
(now the query is retrieving the maxdate from cashMovement or securityMovement, but not the latest date from the union of both tables)
not getting you
Dirk HaestProject manager
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Author

Commented:
Thanks for helping me figure this out !
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