Bizare behavior date field in an Oracle database.

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• Helps the model clause. Date field in the Dimension

  Hello, all.
  
  I'm having a problem with the clause type in my query. In my view, it may be a misunderstanding on my part, but I can't find any documentation that is opposed to the use of the date fields in the dimensions of my model.
  
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  LOGDATE               SHIFTNAME  BUILDING  UNIT  DOORNUMBER  INOUT    EVENTCOUNT
  2012-02-01 06:00:00      A        1800      R      Door 4     Out         14
  2012-02-01 06:00:00      A        1800      R      Door 4     In          15
  2012-02-01 18:00:00      D        1800      R      Door 4     Out         17
  2012-02-01 18:00:00      D        1800      R      Door 4     In          19
  2012-02-02 06:00:00      A        1800      R      Door 4     Out         14
  2012-02-02 06:00:00      A        1800      R      Door 4     In          14
  ...

  I write my SQL like this:
  

  SELECT logdate, shiftname, building, unit, doornumber, inout, eventcount
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   WHERE building='1800' AND unit='R' AND doornumber=4
   MODEL DIMENSION BY (logdate, shiftname, building, unit, doornumber, inout)
         MEASURES (eventcount)
        RULES ()

  And I get the expected result. (The same table as above) But when I try to add rows using rules, I get no new line until the LOGDATE field is a date. For example, by using this code, I expect to get a new line, with a 100 EVENTCOUNT (and other fields as written) but I stiill get the same set of data (no line is added)
  

  SELECT logdate, shiftname, building, unit, doornumber, inout, eventcount
    FROM door_events
   WHERE building='1800' AND unit='R' AND doornumber=4
   MODEL DIMENSION BY (logdate, shiftname, building, unit, doornumber, inout)
         MEASURES (eventcount)
         RULES (eventcount[SYSDATE,'X','1800','R',4,'In'=100)

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  SELECT TO_CHAR(logdate,'YYYY-MM-DD HH24:MI:SS') logdate, shiftname, building, unit, doornumber, inout, eventcount
    FROM door_events
   WHERE building='1800' AND unit='R' AND doornumber=4
   MODEL DIMENSION BY (logdate, shiftname, building, unit, doornumber, inout)
         MEASURES (eventcount)
         RULES (eventcount[TO_CHAR(SYSDATE,'YYYY-MM-DD HH24:MI:SS'),'X','1800','R',4,'In'=100)
  
  
  LOGDATE               SHIFTNAME  BUILDING  UNIT  DOORNUMBER  INOUT    EVENTCOUNT
  2012-02-01 06:00:00      A        1800      R      Door 4     Out         14
  2012-02-01 06:00:00      A        1800      R      Door 4     In          15
  2012-02-01 18:00:00      D        1800      R      Door 4     Out         17
  2012-02-01 18:00:00      D        1800      R      Door 4     In          19
  2012-02-02 06:00:00      A        1800      R      Door 4     Out         14
  2012-02-02 06:00:00      A        1800      R      Door 4     In          14
  ...
  2012-02-07 15:18:33      X        1800      R      Door 4     In          100

  Can someone explain this behavior? I intend to do some calculations on the LOGDATE dimension and I would like to keep it as a date. Thanks in advance for any help!

  I do not get the same result. When I use SYSDATE, I don't get the extra line. When I use TO_CHAR (SYDATE...) as you say, I still don't get the extra line.

  However, when I use a constant date, such as TO_DATE (' 2012/02/07 02:00 ',' YYYY-MM-DD HH24:MI:SS'), then I get the extra line.

  This behavior is described in http://docs.oracle.com/cd/E11882_01/server.112/e25554/sqlmodel.htm#BEIGGGFJ

  «Using UPSERT creates a new cell corresponding to that referenced on the left-hand side of the rule when the cell is absent, and the cell reference contains only positional references * qualified constants *.»

  Best regards, stew Ashton

  P.S. "Oracle Database 11g Enterprise Edition Release 11.2.0.2.0.

  Published by: stew Ashton on 7 February 2012 23:03