DMX Where Clause: Filtering According To The Adjusted Probability

Mar 14, 2008

I have a DMX query like this:




Code Snippet



select * from (
select flattened(*) from (
select att1, topcount(predict([Trans Predictor Unified], INCLUDE_STATISTICS), $Adjustedprobability, 7) as predictedstuff
from [Trans Predictor Model]
prediction join
SHAPE {openquery(DMSCS, 'select distinct CAST(att2 as nvarchar(100)) att1 from DMSCS.dbo.CartProducts order by att1 ')}
append
({openquery(DMSCS, 'select CAST(att2 as nvarchar(100)) att1 , att4, att5 as att3
from DMSCS.dbo.CartProducts order by att1 ')
}
relate [att1] to [att1]) as [Trans Predictor Unified]
as SHAPEQ
on [Trans Predictor Model].[Trans Predictor Unified].att3 = SHAPEQ.[Trans Predictor Unified].att3
) as s
) as t where [predictedstuff.$AdjustedProbability] > 0.5





It's working well. I would like to modify one thing. I would like to chang ethe constant in the where condition, so that it is configurable. That is, I would like to store the constant somewhere (SSAS or relational SQL). I was reading the DMX reference, but it doesn't provide much details about the where's "condition expression". And I looked at a document called "OLE DB for Data Mining Specification version 1.0" of July 2000, which does have in Appendix B the SELECT grammar. There it has

<expression> -> <value>
[...]
| ( SELECT <expression_list> FROM <expression> <where_clause>
[...]

<where_clause> -> WHERE <expression>

If I change the end to

where [predictedstuff.$AdjustedProbability] > (select 0.5 from [Trans Predictor Model] )

, however, just to force some form of query there I get a message saying "The specified column was not found in the context".

I'm running SQL Server 2005.

thanks,
Gustavo

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Filtering Results In The Where Clause Vs A Having Clause

Oct 25, 2007

I am working with a vendor on upgrading their application from SQL2K to SQL2K5 and am running into the following.

When on SQL Server 2000 the following statement ran without issue:

UPDATE dbo.Track_ID

SET dbo.Track_ID.Processed = 4 --Regular 1 leg call thats been completed

WHERE Processed = 0 AND LegNum = 1

AND TrackID IN

(


SELECT TrackID

FROM dbo.Track_ID

GROUP BY TrackID

HAVING MAX(LegNum) = 1 AND


TrackID + 'x1' IN


(


SELECT

dbo.Track_ID.TrackID + 'x' + CONVERT(NVARCHAR(2), COUNT(dbo.Track_ID.TrackID))

FROM dbo.Track_ID INNER JOIN dbo.transactions


ON dbo.Track_ID.SM_ID = dbo.transactions.sm_session_id

GROUP BY dbo.Track_ID.TrackID

)

)
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I changed the SQL to the following, SQL Server now runs it in under a second, but now the app is not functioning correctly. Are the above and the following semantically the same?


UPDATE dbo.Track_ID

SET dbo.Track_ID.Processed = 4 --Regular 1 leg call thats been completed

WHERE Processed = 0 AND LegNum = 1

AND TrackID IN
(



SELECT TrackID

FROM dbo.Track_ID

WHERE TrackID + 'x1' IN


(


SELECT dbo.Track_ID.TrackID + 'x' + CONVERT(NVARCHAR(2), COUNT(dbo.Track_ID.TrackID))

FROM dbo.Track_ID INNER JOIN dbo.transactions


ON dbo.Track_ID.SM_ID = dbo.transactions.sm_session_id

GROUP BY dbo.Track_ID.TrackID

)
GROUP BY TrackID

HAVING MAX(LegNum) = 1

)

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Filtering in where clause....

Code:


select...
FromtProject p with (noLock)
jointProjectCall pc with (noLock) on P.ID = pc.project_id
jointStore S with (noLock) on pc.store_id = s.id
jointZip Z with (noLock) on Z.zip5 = s.zip5
jointManager M on M.ID = case ... end
leftjoin
(
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fromtCall C
whereAnswer > 0 and question_id in (1, 2)
group by projectCall_Recnum
) as C on pc.recnum = c.recnum
wherepc.removed = 0
andp.cancelled = 0
andp.deleted = 0
ands.closed = 0
ands.deleted = 0
andyear(getDate()) between year(P.startDate) and year(P.expDate)



Filtering in joins...

Code:


select...
FromtProject p with (noLock)
jointProjectCall pc with (noLock) on P.ID = pc.project_id
and pc.removed = 0
and p.cancelled = 0
and p.deleted = 0
and year(getDate()) between year(P.startDate) and year(P.expDate)
jointStore S with (noLock) on pc.store_id = s.id
jointZip Z with (noLock) on Z.zip5 = s.zip5
and s.closed = 0
and s.deleted = 0
jointManager M on M.ID = case ... end
leftjoin
(
selectprojectCall_RecNum as RecNum, sum(answer) as HoursUsed
fromtCall C
whereAnswer > 0 and question_id in (1, 2)
group by projectCall_Recnum
) as C on pc.recnum = c.recnum

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Hi All,
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OR



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Thanks in advance.

Regards,

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Code Snippet
select
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from
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union select 11 id
) v
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Code Snippet
select
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012345Ae2001-01-20 00:00:00.0002001-01-21 00:00:00.0000
012345Ae2001-01-24 00:00:00.0002001-01-25 00:00:00.0000
012345Ae2001-01-25 00:00:00.0002001-01-26 00:00:00.0000
012345Ae2001-01-25 00:00:00.0002001-01-26 00:00:00.0001
012345Ae2001-01-26 00:00:00.0002001-01-27 00:00:00.0000

if you notice on the 8 and 9th rows the only difference between them is in
the E column(0 and 1). What I am trying to do here is to display all with
max(E). So in the above example, I should display rows 1-7,9,10 (8th row
will not display because the 9th row has 1 in the E column). this is the
query I have been using on SQL Server 2000 but I keep on displaying all the
rows:

SELECT A,B,C,D,max(E)
FROM <table>
WHERE ( A = '012345A' ) AND
( B >= '01/01/2001' ) AND
( C <= '01/31/2001' )
GROUP BY A,
B,
C,
D

any solutions?

TIA

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