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| Re: Agregations and grouping between Data Sets [message #671061 is a reply to message #671036] |
Mon, 16 May 2011 16:06  |
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A crosstab that uses multiple datasets may be better in this case but
you can use scripting for the onCreate script on the aggregration
element to store the value from one table and use it in the expression
of a data item in a later table. Take a look at this example.
http://www.birt-exchange.org/org/devshare/designing-birt-rep orts/1364-agggregating-across-two-tables/
Jason
On 5/16/2011 11:34 AM, gin1975 wrote:
> I need to do the following from a series of Data Set in a
> report. I put a simple example for you to try to orient
> myself, if possible, about the possibilities of Birt to do
> this:
>
> 1. Data Set1: This dataset obtained a number of items and
> the associated product. Example:
> item 1 - product1
> item 2 - product2
> item 3 - product2
> Then I add the report a table, doing data binding to this
> table and have calculated the total number of items for the
> project through an aggregation (count(total_items)) and a
> product grouping (by group). Example of results showed in
> this report:
> total_items product1 = 1
> total_items product2 = 2
>
> 2. Data Set2: DataSet Similar to the above, I added a table,
> doing data binding and grouped by product obtaining the
> following results. Example:
> total_item_solds product1 = 1
> total_item_solds product2 = 1
>
> 3. Next, I need to calculate in another table the following
> percentages:
> percentage of items sold product1 = (1 / 1) * 100
> percentage of items sold product2 = (1 / 2) * 100
>
>
> The problem is that I see no way to calculate this
> percentage from the results of 1 and 2. Is there any way to
> create a table and associate multiple dataset to create
> aggregations and groupings among them? If not possible,
> what way can solve this problem?
>
> Thanks
>
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