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POtwo dimensions with different dates in fact table
 

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  1. POtwo dimensions with different dates in fact table
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    <p>I'm trying to get around this but can't think of anything. </p> <p>I have 5 dimensions two of which have different dates. Specifically, </p> <pre><code>TEMP_REQUEST ------------ temprequest_id localcouncil_id request_date </code></pre> <p>The other table is:</p> <pre><code>SESSION -------- session_id temprequest_id session_date status . . </code></pre> <p>Now I'm populating the fact using a cursor like this:</p> <pre><code>seq NUMBER; v_timeid NUMBER; Cursor c_factable is select dw_localcouncil2.localcouncil_id, dw_session2.session_id, dw_temp2.temp_id, dw_temprequest2.temprequest_id, dw_typeoftempcover2.type_of_cover_id, dw_session2.session_date from DW_LOCALCOUNCIL2, DW_SESSION2, DW_TEMP2, DW_TEMPREQUEST2, DW_TYPEOFTEMPCOVER2 where dw_temprequest2.localcouncil_id = dw_localcouncil2.localcouncil_id AND dw_session2.temprequest_id = dw_temprequest2.temprequest_id AND dw_session2.temp_id = dw_temp2.temp_id AND dw_session2.type_of_cover_id = dw_typeoftempcover2.type_of_cover_id; begin dbms_output.put_line('it is running!'); for c_rec in c_factable loop SELECT time_id INTO v_timeid from dw_time where session_date = c_rec.session_date; insert into DW_SESSIONS_FACT values(v_timeid, c_rec.localcouncil_id, c_rec.session_id, c_rec.temp_id, c_rec.temprequest_id, c_rec.type_of_cover_id); end loop; </code></pre> <p>My question is that the time_id field in the fact table corresponds to the session_date from the SESSION table and not for the TEMP_REQUEST table. Now If i wanted to query the fact table for a query such as this: <code>the number of temp requests by week!</code> I don't know how I would go about doing that with the current state of the fact table. </p> <p>any help is greatly appreciated! </p> <p>The time dimension has been generated and populated beforehand. Includes all dates between a start date to an end date. It contains the follow columns:</p> <pre><code>TIME_DIM --------- time_id session_date t_day, t_month, t_year </code></pre>
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    1. PTQuestion
    1. USbytebiscuit
    1. USbytebiscuit
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    1. COWhy not join the fact table with temp_request and place any type of condition you want on the date of the temp_request?
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      1. POtwo dimensions with different dates in fact table
      1. USNoChance
    2. CONot sure if I can do that. I mean say if wanted to get the number of sessions from I can just use the where condition: where dw_time.time_id = dw_sessions_fact.time_id but i cannot use something like that for the temprequest_id in the fact table since time_id has been populated with the dates from only the SESSIONS table!
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      1. POtwo dimensions with different dates in fact table
      1. USbytebiscuit
    3. COWhy can't you add another column to the fact table that contains the session time_id?
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      1. POtwo dimensions with different dates in fact table
      1. USNick.McDermaid
 

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