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| Re: selecting only first row of group in BIRT report [message #540264 is a reply to message #540202] |
Tue, 15 June 2010 13:43   |
 mkrivic Mising name
Messages: 33
Registered: May 2010 |
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Hi Richard,
I didn't understand very vell your post. I created group over the table, and called it GROUP_ID. Then, I created aggregation named ROWNUM_IN_GROUP based on GROUP_ID, put it on new table column and got number of rows in group for each row.
As I understood, I must create a computed column in my dataset which is based on that aggregation, and set filter of that count to 1. The last part was not so clear to me, and if you can be more specified and write some steps, I would be gratefull to you!
Regars,
Milan
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| Re: selecting only first row of group in BIRT report [message #540268 is a reply to message #540264] |
Tue, 15 June 2010 13:55 |
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Sorry, I wasn't completely correct or clear in the sequence.
1 - Create your dataset.
2 - Add the table based on your dataset to the report.
3 - Add a Group to the table.
4 - Select the Table, then go to the Property Editor in the Binding tab
You will see a list of the columns from the dataset.
5 - Click the "Add Aggregation" button
6 - Set the Column Binding Name and Display Name to "grouprow"
7 - Set Data Type to Integer
8 - Set Function to RUNNINGCOUNT
9 - Pick any field that should not be null as Expression
10 - Leave Filter Condition blank
11 - Check the radio button for Aggregate on Group and select the desired group
12 - Now still in the Property Editor, go to the Filters tab
13 - Click the Add button
14 - The new "grouprow" column will now appear in the first dropdown. Select it.
15 - Select "Equal To" in the second dropdown
16 - Enter 1 in the third dropdown/textbox and click OK
Now your report will show only the first row within each group, based on the sort order you've already applied.
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| Re: selecting only first row of group in BIRT report [message #666173 is a reply to message #666165] |
Tue, 19 April 2011 11:57 |
mkrivic Mising name
Messages: 33
Registered: May 2010 |
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If you want the first row of group, you can at the end of mentioned steps add filter and set it to 1.
If you want last row, you can count elements in your group. Add new aggregation, give some name (e.g. num_of_rows), use count method and select Aggregate on group and choose your group.
Then, use same steps from third Richard comment, and at the end, instead of your filter (which will be RUNNINGCOUNT) don't use filter equal to 1, use filter equal to num_of_rows, that is, the aggregation name of number of rows in group.
Hope this helps,
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