4 Replies Latest reply: Jun 3, 2014 9:58 AM by Patrick Ha RSS

    Different data pools?


      Hi,


      I'm new to QlikView and I got a question concerning data access.


      In MS Access, we have two different SQL Statements for two separate reports. As these reports use tables that relate to each other via IDs, my plan was to merge these two statements into one using joins. But it seems that I exclude data by this way, because the results differ from the Access reports numbers.

       

      So I'd need two separate data pools that do not affect each other. Like data Pool A for some charts and data pool B for a list of items (that has no relation to the other selections, just a static list that is generated once the project is opened). Is there any way to do this in one QV project?

       

      Thanks,
      pa

        • Re: Different data pools?
          Gysbert Wassenaar

          You won't need different data pools, but you will have to create a good data model. One thing to keep in mind that Qlikview has only one data model in which all tables are 'connected' in the sense that a selection in one table will cascade through the entire model to filter the data.

           

          Once you've loaded all the data into qlikview there are several ways to make sure selections affect one chart, but not another. Set analysis expressions and alternate states are two options. If you can create a small sample document with some data and an explanation of what the result should look like I'm sure one of us can show you how to get the result you need.

            • Re: Different data pools?

              Thanks, I've tried to start from scratch: I've selected the four tables for the first statement, without the WHERE clause because this would exclude data needed for the second report. So far the relations in QlikView's data model view between the tables look right.

               

              But now I need to recreate the WHERE clause and INNER JOINs in QV ...because otherwise I don't get the correct numbers.

               

              Data for the charts should only be recognized if IDX=9 OR IDX=10 and if there is related data in table 3 and table 4 (this was handled by the inner joins before). Do I have to insert the WHERE clause (IDX=9 OR IDX=10) in the chart's expression page? How do I recreate those INNER JOINS by QV means?