Zusammengesetzter Primary Key Mit Deleted-Flag

Jul 20, 2005

Knifflige Frage zu Datenbanken:

Es gibt Tabellen, die mehr als ein PK-Feld haben; also z.B.MAID und GMID.
Soweit ok.

Nehmen wir an, aus dieser Tabelle sollen keine Datensätze physikalisch
gelöscht werden, sondern der Löschstatus durch ein Datenfeld GELOESCHT
angegeben werden. Hat das Feld den Wert 0, dann ist der Datensatz nicht
gelöscht; ansonsten steht der Zeitpunkt (Tag und Uhrzeit) der Löschung drin.
Dann funktioniert der PK nicht mehr, denn es können ja durchaus mehrere
Datensätze mit gleicher MAID und GMID vorhanden sein. Aufnehmen von
GELOESCHT in den PK geht theoretisch, ist aber gefährlich (da
Fließkommafeld, und wer weiß schon, ob 0 immer gleich 0 ist...).

Hat jemand eine Idee?

SWE@KP

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Manipulate The 'deleted Record' Flag On DBF Files

May 7, 2007

Hi,



I am using OLE DB provider for Foxpro (VFPOLEDB.1) to query DBF files. I need to migrate the content of these files to a SQL Server 2005 database.



These DBF files have some (actually a lot) records marked as deleted using the DBF 'deleted' flag. When I submit a SELECT command to the OLE DB Provider, it returns me all the non-deleted records from the file.



It is very Ok as long as the 'deleted' rows actually have no more business value, but in my case, I need to do some processing on them, and even to migrate their data.



What are the options available for me to be able to query and differentiate the 'deleted' records ?



Thank you in advance,



Bertrand Larsy

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~~~Focus on problem, not solution ¯(º_o)/¯ ~~~

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_________________________________________________
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Dec 5, 2007



Hi there,


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[Cabinet] Text Discrete,

[CUID] Long Continuous PREDICT_ONLY,

[Denom] Text Discrete,

[Gametype] Text Discrete,

[Max Coins] Text Discrete,

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[Pos] Text Discrete,

[Progressive] Text Discrete,

[Type]Text Discrete)

Using Microsoft_Decision_Trees

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To illustrate:
A 1, $10, 1/1/2007 Y
B 1, $12, 1/1/2007 N
C 2, $5, 6/7/2007 N
D 2, $4, 1/1/2007 N
E 3, $1, 1/1/2007 Y
F 3, $2, 6/7/2007 Y
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WITH SampleData (PERSON,TRANSACTDATE, STARTDATE, END_DATE, IN_PUNCH,OUT_PUNCH,HOURS, PAYCODE) AS
(
SELECT 1234,'08/03/2015','08/03/2015','08/03/2015', '06:00','09:00','3', 'REG1' UNION ALL
SELECT 1234,'08/03/2015','08/03/2015','08/03/2015', '09:00','13:00','4','REG2' UNION ALL
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SELECT 1234,'08/04/2015','08/04/2015','08/04/2015', '14:00','16:00','2', 'LEAVE2'UNION ALL
SELECT 1234,'08/05/2015','08/05/2015','08/05/2015', '08:00','09:00','1', 'LEAVE1'UNION ALL
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SELECT 4553,'08/05/2015','08/05/2015','08/05/2015', '10:00','12:00','2','LEAVE2'
)

[code].....

Current Results

PersonTransactDate STARTDATEEND_DATEIN_PUNCH OUT_PUNCH HOURS PAYCODE
123408/03/2015 08/03/201508/03/201506:00 13:00 3 REG1
123408/03/2015 08/03/201508/03/201506:00 13:00 4 REG2
123408/04/2015 08/04/201508/04/201509:00 16:00 4 LEAVE1
123408/04/2015 08/04/201508/04/201509:00 16:00 2 LEAVE2
123408/05/2015 08/05/201508/05/201508:00 09:00 1 LEAVE1
455308/05/2015 08/05/201508/05/201508:00 12:00 2 LEAVE2
455308/05/2015 08/05/201508/05/201508:00 12:00 1 REG1

Desired Results

PersonTransactDate STARTDATEEND_DATEIN_PUNCH OUT_PUNCH HOURS PAYCODE FLAG
123408/03/2015 08/03/201508/03/201506:00 13:00 3 REG1 NULL
123408/03/2015 08/03/201508/03/201506:00 13:00 4 REG2 NULL
123408/04/2015 08/04/201508/04/201509:00 16:00 4 LEAVE1 1
123408/04/2015 08/04/201508/04/201509:00 16:00 2 LEAVE2 2
123408/05/2015 08/05/201508/05/201508:00 09:00 1 LEAVE1 NULL
455308/05/2015 08/05/201508/05/201508:00 12:00 2 LEAVE2 NULL
455308/05/2015 08/05/201508/05/201508:00 12:00 1 REG1 NULL

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My source date

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1     123    2006-01-05   2013-01-13
1     456    2006-02-23   2013-04-13
1     789    2005-12-12   2013-06-13
2     913    2004-12-15   2012-01-13
2     406    2006-04-13   2014-04-13
3     113    2009-11-15   2011-01-13
3     106    2010-04-13  
4     513    2002-11-15  
4     168    2011-10-23  
5     342    2007-01-05   2009-01-13      
5     416    2008-02-23                   
5     159    2008-12-12   2010-06-13   
6     542    2005-01-03   2007-01-13      

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1     123    2006-01-05   2013-01-13        yes ( Rule-1: set flag = yes within the group for ID =1 because all the 3 records terminatedate is not null)
1     456    2006-02-23   2013-04-13        yes
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[Code] .....

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Imports System.Data

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