Conditional row grouping Ag-Grid - ag-grid

Is there a way to enable row grouping, but only group rows when there are more than one values to be grouped.
I want to avoid having groups of only a single row. I don't think it makes sense to group those

Let's say you want to group State column of your data. But some of your row's State column value may not be exist/null. So you do not want to group these kind of rows. To achieve this traverse your data source and assign State column value to null or undefined. If you do this rows that have column value as null or undefined will not be grouped.
https://www.ag-grid.com/javascript-grid-grouping/#unbalanced-groups

The way to remove single children is by setting removeSingleChildren=true
https://www.ag-grid.com/javascript-grid-grouping/

Related

how to multiply variable to each element of a column in database

I am trying to add a column to a collection by multiplying the 0.9 to existing database column recycling. but I get a run time error.
I tried to multiply 0.9 direction in the function but it is showing error, so I created the class and multiplied it there yet no use. what could be the problem?
Your error message is telling you what the problem is: your database query is using GROUP BY in an invalid way.
It doesn't make sense to group by one column and then select other columns (you've selected all columns in your case); what values would they contain, since you haven't grouped by them as well (and get one row returned per group)? You either have to group by all the columns you're selecting for, and/or use aggregates such as SUM for the non-grouped columns.
Perhaps you meant to ORDER BY that column (orderBy(dt.recycling.asc()) if ascending order in QueryDSL format), or to select all rows with a particular value of that column (where(dt.recycling.eq(55)) for example)?

How to add data to the grouped row in AgGrid's grid

When using Row Grouping in AgGrid, how one can add data to the grouped row as follows:
The result is not an aggregate, actually it should be another value from the group itself, I can use the master detail to achieve that but I couldn't find an easy way of changing the details grid to look like the grouped one.

Display the highest value in a same column in crystal report

I am trying to show the highest values in column B which is related to each uniqe reference.I've tried this formula but didn't work.
The Data
Output 01.03.2019
This is out put from the below formula
Blockquote
01.03.2019_1
Blockquote
enter[01.03.2019_2]5 image description here
Expected Output
whileprintingrecords;
stringvar dept;
if {baseevent1.Column B} = Maximum({baseevent1.Column B},{baseevent1.Referance}) then
dept:={baseevent1.Referance}
There is an easier way to achieve your goal with less formula usage and more grouping and sorting.
You will need 2 grouping levels. The top-most group will be Referance, and then below that group on Column B. Ensure that Column B is sorted from lowest to highest. By sorting this way, the very last detail record will always contain the highest value of Column B.
Then suppress both group header section, suppress the details section, and suppress the Column B group footer section.
Place data fields for Referance, Column B, and Formula in the Referance Group Footer Section.
By grouping and sorting in this manner, when you reach the footer section for your top most grouping, the values each field contains will always be the record that had the maximum value of Column B.
No need for any formula fields at all with this approach. :)
Just do be aware, that if you ever have a duplicate value in Column B within a Referance Group, then you are going to run into issues, as this approach will print only the values of the last record in the grouped data. However, even with a formulaic approach like you began with, you were still going to run into this issue should there be any duplicates in the composite key value created by concatenating Referance and Column B.

Tableau isNull then 0 calculated field

I have my tableau workbook and I'm currently counting by a field called ID - COUNT([Id]) - while this is great, on days with no activity my dashboard doesn't show ANYTHING and I want it to show zero if there was no activity - so I do I change this to count but also replace null with 0 (zero)?
First make sure you understand what Count([ID]) does. It returns the number records in the data source that have a non-null value in the column [ID].
Count() never evaluates to null. But if you have no rows at all in your data after filtering, then you'll get an empty result set -- i.e. view data will not have any summary data to show at all - whether null or zero.
Wrapping COUNT() in a call to ISNULL() or ZN() won't help in that case.
The solution is to make sure you have at least one data row per day, even if all other fields besides the date are null. Aggregation functions ignore nulls so padding your data like this should not disturb your results. The simplest way is to make a calendar table that has one row per day with nulls in most columns. Then use a Union to combine the calendar with your original data source. Then Count(ID) will return zero on days where there are no other records besides the calendar entry.
You can also get similar results using data blending, although with a bit more complexity.

Is it possible to create a row that spans all columns of a Matrix in SSRS 2008?

Is it possible to have add a row to an SSRS 2008 Matrix that spans all of the matrix's columns?
This crude diagram shows roughly what I'm looking for:
The basic idea is that each line item is a person, and each column is a field in a form for that person. The fields themselves are dynamic (and implemented as column groups on the matrix). Additional column groups are included to append non-dynamic form fields, like the time the record was entered and who entered it. Under each person's record is a comments field, which should span all of the form fields above it.
At the moment I have the matrix embedded in another tablix, with the name and fields in the matrix and the comments in the parent tablix. This works for the data (each instance of the matrix ends up being one row), but the header repeats too often (once per person) because it's attached to the matrix. The only thought I have as to how to fix this is to create another matrix in the parent tablix with the same grouping and use it to display the headers... But this will require quite a lot of manual synchronization to keep the two matrices the same.
Edit: The key problem here is making the second row span multiple column groups.
Here's what you can do:
Select the column grouping you want to add above and right click and select
Add Group... Parent Group...
Group the column by something that will not aggregate the data. You'll have to select a field from your dataset to group by so that it creates an overlapping column grouping.
Check the Add group header box
You should now see something similar to this:
Now you just need to move the Value1 field and it's header over under the new column to the right beyond the matrix dividers. Once that's done, simply delete the ungrouped column where you just copied Value1 from and be sure to select Delete columns only checkbox.
Your finished product should look like this:
It is possible - And the above answers are partial answers leaving out one key step: Merging the cells of the child row.
First, right click on your grouped row, then select Insert Row -> Inside Group - Below and you will get two rows with the cells aligning on the columns
Second, ctrl click all the cells in your new row (ie row without the data) then right click on one of the highlighted cells, and then select Merge Cells.
Now you have the table you like. To add a value to the new row: first right click your new (multi column) cell,select Create Placeholder, and then add the dataset item you desire to the placeholder.
[Edit]
After several attempts, I'm going to say this isn't possible in SSRS. The best I could come up with is a group footer that spans columns 1,2, and 3, but not the User column.
[Original Response]
I recently did something similar to this.
First, what tool are you using to create SSRS reports? (I used SQL Server Business Intelligence Development Studio)
You'll want to create a row group (grouped on Person)
Append a row to your table in "Design" view (Right click, "Insert Row --> Inside Group - Below").
Add an expression to the row that pulls the value for your "Comment" column (=Fields!Comment.Value).
Let me know if that helps...
Try adding in you column group "header" with a grouping expression of (1=1). Then a detail field will need to be defined. If you define the other group with correct data then the "header" will stretch across all details columns. You may need to merger depending on other options.
The easiest way to do this is to create a Tablix with only one column, and your row grouping.
Then, you create two rows inside this group.
In the first row inside the group, you insert a Matrix, wich you can then subgroup as you prefer.
I just had a similar problem, and this was my solution.
I banged my head against the wall for a lot of time, until i realized the solution to my problem wasn't "making a cell span multiple column groups", but "making a cell split into multiple column groups".
You can accomplish the goal by using a subreport for each person. The subreport will receive the employee id and create the hierarchy for you. Make sure your subreport column widths match the widths of the parent report.