I have two tables (models have the same name as the tables):
StatusNames: id|name
and
CurrentUserStatus: id|user_id|status_id
At the moment CurrentUserStatus is empty, and StatusNames have several records inserted (Active, Inactive, On Pause, Terminated...).
I need to get all data from CurrentUserStatus and show how much are there within each status (given the current tables, next to each status name there should be zero (0)).
Is this possible to do with one query?
So whatever I assumed you can do something like this:
$dataset = CurrentUserStatus::whereHas('status')
->with('status')
->withCount('status')
->orderBy('status_count', 'dsc')
->get();
Hope this helps.
Related
I am new to DAX and PowerBI and have a problem to write DAX formulas for my case:
I have two tables: Assets and Tickets. Each have an Id, and the Assets have a ParentAssetId (can be 0 or None).
In a DAX expression: I would like to count (and list) all the tickets attached to an Asset and its children.
I tried this way but without success:
nbChildTickets =
VAR mykey =
SELECTEDVALUE ( Assets[AssetKey] )
VAR mypar =
SELECTEDVALUE ( Assets[ParentId] )
RETURN
CALCULATE(
COUNTX(Tickets, Tickets[TicketKey]),
FILTER(Tickets, RELATED(Assets[ParentId]) = mykey)
)
The Tables and the Canvas
It is the asset table which contains both the AssetKey and the ParentId colums.
Have any idea or tuto to do this ?
Thanks
A question, are these tables already related? In case they are, it seems that you wouldn't need a measure like that to get the count of # of tickets by asset and its parent. I would do it in the next two ways. Supposing you need it in a table:
Option 1.
Create a simple count measure to get the number of tickets in Tickets table, it could be something like Number of Tickets = COUNTROWS('Tickets')
Drag a table to the canvas.
Add to the table Assets and its children columns, finally add your new measure to the table
Option 2. In case each ticket has an ID.
Drag a table to the canvas.
Add to the table Assets and its children columns. Also add your tickets Id.
At Fields section (where you drag and drop your columns, right click and select the Count option.
Done
Remember, it is important that your both tables are already related to work. Otherwise Power BI will not know how to calculate and displays this combination of data for you.
First create two relationships between Assets and Ticket table. One relationship will be active (one to many) on column AssetKey Column.
Second relationship will be Inactive. Asset[AssetKey] = Ticket[ParentID]
Now use the below Measures -
Number Of Tickets = COUNT(Tickets[TicketKey])
Number of Child = CALCULATE(COUNT(Tickets[AssetKey]),USERELATIONSHIP(Asset[AssetKey],Tickets[ParentId]))
Relationship diagram is in below image :
Output is mentioned below:
The blank row can be eliminated from visual filters :
I have a Laravel 4.2 project where I get data from a SQL DB and I can display onto the page. I can select the single record just fine, but I want to also show the records around the one selected.
For example, I want to show the 5 records above and below the one selected. Im not sure how to do this in Laravel.
$gradschoolrange = MOGRadschool::where('Title', '=', $gradschool)->get();
In the above example $gradschool might be "Test College", it will return that with a value, but I want to show all the other related records around it with those values too. The results should look something like this:
ABC College
Another College
Blah College
Go To College
Test College
Yet Another College
Yo Yo College
College College
Something College
Eating College
As there's no ordering specified in your initial query, I'm assuming you want 5 next/previous records according to primary key (id? - if not, you would obviously need to change that) in the table?
Given that IDs may not be numerically sequential, we can't simply assume that the previous 5 rows will be the ID of the row with title = $gradschool minus 5, so wondered if this might work:
$initial = MOGRadschool::where('Title', $gradschool)->first(); // get the initial row with the title of $gradschool
$result = MOGRadschool::where('id', '<', $initial->id)->take(5)->orderBy('id', 'DESC') // new query getting the previous 5 rows, by ID
->union(MOGRadschool::where('id', '>', $initial->id)->take(5)) // union a second query getting the next 5 rows by ID
->get() // get the result as a collection
->add($initial) // add the initial row to the collection
->sort(); // sort the collection (by id) so that the initial row is in the middle
So the output is a collection containing the initial row in the middle, with up to 5 records either side. You also have the initial row to highlight the output, if you need that.
If you want it based on the IDs, which is what I understand from your issue, something like this should work:
$selectedGradSchool = MOGRadschool::where('Title', '=', $gradschool)->get()->first();
$aboveSelected = MOGRadschool::where('id', '<=', $selectedGradSchool->id)
->orderBy('id', 'desc')
->take('5')
->get();
$belowSelected = MOGRadschool::where('id', '>' $selectedgradSchool->id)
->take('5')
->get();
//Concatenate both results
$schoolRange = $aboveSelected->concat($belowSelected);
Now the collection should look similar to your desired result.
I hope one can help me, I am new in linq,
I have 2 tables name tblcart and tblorderdetail:
I just show some fields in these two tables to show whats my problem:
tblCart:
ID,
CartID,
Barcode,
and tblOrderDetail:
ID,
CartID,
IsCompleted
Barcode
when someone save an order, before he confirms his request,one row temporarily enter into the tblCart,
then if he or she confirms his request another row will be inserted into the tblOrderDetail ,
Now I wanna not to show the rows that is inserted into tblOrderDetailed(showing just temporarily rows which there is in tblCart),
In another words, if there is rows in tblCart with cartID=1 and at the same time there is the same row with CartID= 1 in tblOrderDetail, then I dont want that Row.
All in all, Just the rows that there isnt in tblOrderDetail, and the field to realize this is CartID,
I should mention that I make Iscompleted=true, and with that either we can exclude the rows we do not want,
I did this:
var cartItems = context.tblCarts
.Join(context.tblSiteOrderDetails,
w => w.CartID,
orderDetail => orderDetail.cartID,
(w,orderDetail) => new{w,orderDetail})
.Where(a=>a.orderDetail.cartID !=a.w.CartID)
.ToList()
however it doesn't work.
one example:
tblCart:
ID=1
CartID=1213
Barcode=4567
ID=2
CartID=1214
Barcode=4567
ID=3
CartID=1215
Barcode=6576
tblOrderDetail:
ID=2
CartID=1213
Barcode=4567
IsCompleted=true
with these data it should just show the last two Row in tblCart, I mean
ID=2
CartID=1214
Barcode=4567
ID=3
CartID=1215
Barcode=6576
This sounds like a case for WHERE NOT EXISTS in sql.
roughly translated this should be something like this in LINQ:
var cartItems = context.tblCarts.Where(crt => !context.tblSiteOrderDetails.Any(od => od.CartID == crt.cartID));
If you have a navigation property on cart to reference details (I'll assume it's called Details), then:
var results=context.tblCarts.Where(c=>!c.Details.Any(d=>d.IsCompleted));
I am trying to run a query in propel that runs an aggregate function (SUM).
My Code
$itemQuery = SomeEntity::Create();
$itemQuery->withColumn('SUM(SomeColumn)', someColumn)
->groupBy(SomeForeignKey);
Problem
It should theoretically return the sum of every group of items but the problem is propel tries to fetch all columns, and also appends a bunch of other columns to the group by clause. This results in an unexpected categorisation and therefore the sum is incorrect.
Is there anyway to make propel fetch just the column I am running the aggregation function on so that the group by statement works as well?
You need to add a select statement for the column and the foreign key:
$itemQuery = SomeEntity::Create();
$itemQuery->select(array(SomeColumn, SomeForeignKey));
$itemQuery->withColumn('SUM(SomeColumn)', someColumn);
$itemQuery->groupBy(SomeForeignKey);
This is too tough for me guys. It's for Jeremy!
I have two tables (although I can also envision needing to join a third table) and I want to sum one field and count rows, in the same, table while joining with another table and return the result in json format.
First of all, the data type field that needs to be summed, is numeric(10,2) and the data is inserted as params['amount'].to_f.
The tables are expense_projects which has the name of the project and the company id and expense_items which has the company_id, item and amount (to mention just the critical columns) - the "company_id" columns are disambiguated.
So, the following code:
expense_items = DB[:expense_projects].left_join(:expense_items, :expense_project_id => :project_id).where(:project_company_id => company_id).to_a.to_json
works fine but when I add
expense_total = expense_items.sum(:amount).to_f.to_json
I get an error message which says
TypeError - no implicit conversion of Symbol into Integer:
so, the first question is why and how can this be fixed?
Then I want to join the two tables and get all the project names form the left (first table) and sum amount and count items in the second table. I have tried
DB[:expense_projects].left_join(:expense_items, :expense_items_company_id => expense_projects_company_id).count(:item).sum(:amount).to_json
and variations of this, all of which fails.
I would like a result which gets all the project names (even if there are no expense entries and returns something like:
project item_count item_amount
pr 1 7 34.87
pr 2 0 0
and so on. How can this be achieved with one query returning the result in json format?
Many thanks, guys.
Figured it out, I hope this helps somebody else:
DB[:expense_projects___p].where(:project_company_id=>user_company_id).
left_join(:expense_items___i, :expense_project_id=>:project_id).
select_group(:p__project_name).
select_more{count(:i__item_id)}.
select_more{sum(:i__amount)}.to_a.to_json