Group by in a view can this be used ?

In a complex view the group by gives strange (wrong) results.
(Adding a group by and having clause generates more rows instead of less).
select A, B, C+ isnull(' '+D, '')+isnull(str(E), ''), F
from view_A
Results in : 720 rows
select A, B, C+ isnull(' '+D, '')+isnull(str(E), ''), F, count(*)
from view_A
group by A, B, C+ isnull(' '+D, '')+isnull(str(E), ''), F
having count(*) > 1
Results in : 33678 rows (a lot of them containing a 1 in the count(*)
column)
(There should be only 57 rows)
If the view is put into a table : select * into table_A from view_A
First result : 720
Second result : 57
Is this a (known) bug,
(Removing the count(*) from the first query results in a :
Server: Msg 8624, Level 16, State 16, Line 1
Internal SQL Server error.
)
The view uses union to get the results form 3 queries, which each have
several tables. There are no correlated subqueries.
ben brugmanPlease can you post some code to reproduce the problem: the DDL for the base
tables and the view (just the key columns and the columns involved in the
query will do) plus a small sample of data (post as INSERT statements).
--
David Portas
--
Please reply only to the newsgroup
--|||I could generate a sample, but I would have
to anominise all data and meta data (table, view and column names).
There is a number of tables involved and I would have
to create suetable data.
(Sorry my organisation does not allow me to do this otherwise).
But then it does take such a form that I do not expect anybody to
look at the problem. And it would take a considerable amount of time
to prepare this.
At the end of this message I have done this only for the views and the
offending queries.
(Just as an example to show that this is not very user friendly).
Thanks for your attention
ben brugman
LOOK AT THE EXAMPLE AT YOUR OWN PERIL.
/* View for a selection. */
CREATE VIEW dbo.View_S
AS
SELECT T157TABLE.F637FIELD,
T157TABLE.F687FIELD AS F346FIELD,
T157TABLE.F638FIELD,
'SE' AS F347FIELD,
T116TABLE.F280FIELD AS F345FIELD,
T104TABLE.F703FIELD AS F238FIELD,
T157TABLE.F652FIELD,
T157TABLE.F744FIELD,
T157TABLE.F745FIELD,
T116TABLE.F277FIELD AS F246FIELD,
T116TABLE.F278FIELD AS F342FIELD,
T157TABLE.F324FIELD, T157TABLE.F309FIELD,
T157TABLE.F311FIELD,
T157TABLE.F588FIELD,
T157TABLE.F590FIELD,
T157TABLE.F747FIELD
FROM T157TABLE INNER JOIN
T116TABLE ON
T116TABLE.F637FIELD = T157TABLE.F637FIELD AND
T116TABLE.F687FIELD = T157TABLE.F687FIELD
LEFT OUTER JOIN
T104TABLE ON
T104TABLE.F637FIELD = T157TABLE.F637FIELD AND
T104TABLE.F687FIELD = T157TABLE.F687FIELD
AND T104TABLE.F230FIELD = 'SIS'
/* The main View */
CREATE VIEW dbo.View_A
AS
SELECT T122TABLE.F637FIELD,
T122TABLE.F344FIELD AS F346FIELD,
T122TABLE.F638FIELD,
'CT' AS F347FIELD,
T122TABLE.F262FIELD AS F345FIELD,
T122TABLE.F238FIELD,
T122TABLE.F246FIELD, T122TABLE.F342FIELD,
T122TABLE.F324FIELD,
T122TABLE.F309FIELD,
IHCP_creator.F510FIELD AS F310FIELD,
T122TABLE.F588FIELD,
IHCP_mutator.F510FIELD AS F589FIELD,
T122TABLE.F747FIELD, NULL AS F652FIELD, NULL
AS F744FIELD, NULL
AS F745FIELD
FROM T122TABLE, T159TABLE IHCP_creator,
T159TABLE IHCP_mutator
WHERE T122TABLE.F311FIELD = IHCP_creator.F702FIELD
AND
T122TABLE.F590FIELD = IHCP_mutator.F702FIELD
UNION
SELECT T123TABLE.F637FIELD,
T123TABLE.F348FIELD AS F346FIELD,
T123TABLE.F638FIELD,
'TT' AS F347FIELD,
T123TABLE.F737FIELD AS F345FIELD,
T123TABLE.F238FIELD,
T123TABLE.F246FIELD,
T123TABLE.F342FIELD,
T123TABLE.F324FIELD,
T123TABLE.F309FIELD,
IHCP_creator.F510FIELD AS F310FIELD,
T123TABLE.F588FIELD,
IHCP_mutator.F510FIELD AS F589FIELD,
T123TABLE.F747FIELD, NULL
AS F652FIELD, NULL AS F744FIELD, NULL
AS F745FIELD
FROM T123TABLE,
T159TABLE IHCP_creator,
T159TABLE IHCP_mutator
WHERE T123TABLE.F311FIELD = IHCP_creator.F702FIELD
AND
T123TABLE.F590FIELD = IHCP_mutator.F702FIELD
UNION
SELECT View_S.F637FIELD,
View_S.F346FIELD,
View_S.F638FIELD,
View_S.F347FIELD,
View_S.F345FIELD,
View_S.F238FIELD,
View_S.F246FIELD,
View_S.F342FIELD,
View_S.F324FIELD,
View_S.F309FIELD,
IHCP_creator.F510FIELD AS F310FIELD,
View_S.F588FIELD,
IHCP_mutator.F510FIELD AS F589FIELD,
View_S.F747FIELD,
View_S.F652FIELD,
View_S.F744FIELD,
View_S.F745FIELD
FROM View_S,
T159TABLE IHCP_creator,
T159TABLE IHCP_mutator
WHERE View_S.F311FIELD = IHCP_creator.F702FIELD
AND
View_S.F590FIELD = IHCP_mutator.F702FIELD
/* The query which goes 'wrong' */
select F637FIELD, F638FIELD, F347FIELD+ isnull(' '+F744FIELD,
'')+isnull(str(F652FIELD), ''), F246FIELD, count(*) from View_A
group by F637FIELD, F638FIELD, F347FIELD+ isnull(' '+F744FIELD,
'')+isnull(str(F652FIELD), ''), F246FIELD
having count(*) > 1
/* The simple Query */
select F637FIELD, F638FIELD, F347FIELD+ isnull(' '+F744FIELD,
'')+isnull(str(F652FIELD), ''), F246FIELD from View_A

GROUP BY highest score per user

Hi there!

I've got a SPROC that generates a recordset of user vote tallies (they're calculated in a separated SPROC). The user submissions are grouped by a GUID value so as to remain unique for a user's submission (each user can have multiple submissions.

The problem is that the recordset returned displays ALL the users, and I'd like to only select the highest score for each user. So, if I have 500 submissions from 3 users (User1 and User2 submit once each and User3 submits 497 times), the total recordset will have 3 rows - being the highest score per user, discounting the others.

Here's my base query:

SELECT a.UserID,a.Name AS [Name],SUM(b.TotalTally) AS [TotalPoints]
FROM Users a
INNER JOIN Ballots b ON a.UserID = b.UserID
GROUP BY a.UserID, a.Name,b.SubmissionGUID
ORDER BY [TotalPoints] DESC,[Name] ASC

...and I've been able to get the highest vote per user, discounting duplicate entries, by using this:

SELECT a.UserID,MAX(b.TotalTally) AS [TotalPoints]
FROM Users a
INNER JOIN Ballots b ON a.UserID = b.UserID
GROUP BY a.UserID

How can I write combine the two in a nested subquery to display only the top score per user?further, here are the table schema:

USERS
- UserID (INT)
- Name (VARCHAR)

BALLOTS
- UserID (INT)
- SubmissionGUID (VARCHAR)
- TotalTally (INT) DEFAULT '0' -- this is incremented by varying values as a user makes correct selections
- WinningTeam (VARCHAR)

also, you can just assume that there are multiple submission, with each submission consisting of 63 records in the BALLOTS table, each with the same SubmissionGUID.

so, a user's total point would be the SUM'med value of all of their records grouped by a SubmissionGUID. Thus, a user "JOHN", could have the following:

USER SUBMISSIONGUID NAME TOTALTALLY
-- -- -- ----
1 kugiuvbiu JOHN 45
2 olhilugiu STEVE 32
3 oih98y897 MARK 31
1 89769gibi JOHN 29
1 0980jpo90 JOHN 13

I'd like just to select each unique USER's highest TOTALTALLY and display that, and forget about the others.

Clear as mud? :)