I need to put together a deals dashboard to help sales activity. The purpose of this is to match customer requests with supplier offers, so show if there is a business opportunity.
The problem is that customers and suppliers usually have several different identifiers for the same product. Like this:
Supplier offers:
enter image description here
Customer requests:enter image description here
In order for the offers and requests to match, I need to create a data table with the unique products with the product name and ID we want to use. Next to the Main IDs, I need to enter all the alternative IDs that I met in offers and requests. Something like this:
enter image description here
To be able to make relationship between these tables, for both I added a calculated column at the end of both the offers and requests tables with the following DAX formula:
Main ID = LOOKUPVALUE(product_data[Main ID],product_data[Main ID],'supplier offers'[ID])&LOOKUPVALUE(product_data[Main ID],product_data[ALT ID 1], 'supplier offers'[ID])&LOOKUPVALUE(product_data[Main ID],product_data[ALT ID 2], 'supplier offers'[ID])&LOOKUPVALUE(product_data[Main ID],product_data[ALT ID 3], 'supplier offers'[ID])&LOOKUPVALUE(product_data[Main ID],product_data[ALT ID 4], 'supplier offers'[ID])&LOOKUPVALUE(product_data[Main ID],product_data[ALT ID 5], 'supplier offers'[ID])
So it found the main IDs for all offers and request like this:
enter image description here
But after, when I wanted to make relationship between supplier offers and product_data by linking to main identifiers to each other, Power BI shows "Circular dependency was detected: supplier offers [Main ID]" (and the same with customer requests.)
I want to make relationship in order to use the Product Names and Main IDs from the product_data in my visuals.
What should I do to avoid this error? Is there an other solution to lookup values from multiple columns?
Thanks in advance!
This type of data clean up should be done in PQ and not DAX.
Related
I am using Symfony and Doctrine Querybuilder to return a list of Orders with a count of all Products in each Order. That means I have a 1:n Relationship between Orders and OrderProducts the OrderProducts table stores the OrderID, and the quantity of each product. If I do a groupBy o.orderId then I get the correct Sum, but then I do not get the data for all the orderProducts belonging to the orderId so if there are 2 different Products in the orderproducts table then I get qty:2 but only the data for 1 product, so I need to group by oi.orderProductId but obviously as soon I add the second groupBy oi.orderProductId then the TotalCount is showing me the sum for each individual record. I am fully aware that this is the correct behaviour, but I just can not get my head around it if there is a way to achieve what I am trying to do. I assume I have to somehow use a subselect, but I am not sure if this is even possible to achieve. My 2 tables and my attemped so far
tbl order
orderId
dateCreated
tblorderProducts
orderProductid
orderId
qty
return $this->createQueryBuilder('o')
->select(array(
'o AS orderData',
'oi',
'sum(oi.qty)AS noOfItems'))
->join('o.orderItems', 'oi')
->groupBy('o.orderId')
->groupBy('oi.orderProductId')
->getQuery()
->execute();
I hope somebody can give me a hint how I could achieve it. Thank you very much in advance.
The groupBy() method always replaces the current group by clause. Use addGroupBy() method instead.
let's say I have Order model that hasMany Product(product_id, name, order_id) and Product belongs to Order
I want to find only those orders that have product with specific product_id.
According to https://loopback.io/doc/en/lb3/Include-filter.html
this should work, but it doesn't
getOrders?filter={"include":{"relation":"Product","scope":{"where":{"product_id":"6"}}}}
that kid of filter shows all orders no matter if it has product with id 6 or not.
where do I go wrong?
Your query should show you all orders, but it will include only products that id fits your requirements. But it may depend on db connector you're using. Based on what you've wrote I guess it's mongo, so it's not possible.
Instead, you could turn around the query and look for products where product_id is 6 and include order relation. So the query would look like this:
getProducts?filter={"where": {"product_id": 6}, "include": "orders"}
I'm new to django and ORM in general, and so have trouble coming up with query which would join multiple tables.
I have 4 Models that need joining - Category, SubCategory, Product and Packaging, example values would be:
Category: 'male'
SubCategory: 'shoes'
Product: 'nikeXYZ'
Packaging: 'size_36: 1'
Each of the Model have FK to the model above (ie. SubCategory has field category etc).
My question is - how can I filter Product given a Category (e.g. male) and only show products which have Packaging attribute available set to True? Obviously I want to minimise the hits on my database (ideally do it with 1 SQL query).
I could do something along these lines:
available = Product.objects.filter(packaging__available=True)
subcategories = SubCategory.objects.filter(category_id=<id_of_male>)
products = available.filter(subcategory_id__in=subcategories)
but then that requires 2 hits on database at least (available, subcategories) I think. Is there a way to do it in one go?
try this:
lookup = {'packaging_available': True, 'subcategory__category_id__in': ['ids of males']}
product_objs = Product.objects.filter(**lookup)
Try to read:
this
You can query with _set, multi __ (to link models by FK) or create list ids
I think this should work but it's not tested:
Product.objects.filter(packaging__available=True,subcategories__category_id__in=[id_of_male])
it isn't tested but I think that subcategories should be plural (related_name), if you didn't set related_name, then subcategory__set instead od subcategories should work.
Probably subcategories__category_id__in=[id_of_male] can be switched to .._id=id_of_male.
I found some solutions here and in the django documentation, but I could not manage to make one query work the way I wanted.
I have the following model:
class Inventory(models.Model):
blindid = models.CharField(max_length=20)
massug = models.IntegerField()
I want to count the number of Blind_ID and then sum the massug after they were grouped.
My currently Django ORM
samples = Inventory.objects.values('blindid', 'massug').annotate(aliquots=Count('blindid'), total=Sum('massug'))
It's not counting correctly (it shows only one), thus it 's not summing correctly. It seems it is only getting the first result... I tried to use Count('blindid', distinct=True) and Count('blindid', distinct=False) as well.
This is the query result using samples.query. Django is grouping by the two columns...
SELECT "inventory"."blindid", "inventory"."massug", COUNT("inventory"."blindid") AS "aliquots", SUM("inventory"."massug") AS "total" FROM "inventory" GROUP BY "inventory"."blindid", "inventory"."massug"
This should be the raw sql
SELECT blindid,
Count(blindid) AS aliquots,
Sum(massug) AS total
FROM inventory
GROUP BY blindid
Try this:
samples = Inventory.objects.values('blindid').annotate(aliquots=Count('blindid'), total=Sum('massug'))
I have a models in Django that are something like this:
class Classification(models.Model):
name = models.CharField(choices=class_choices)
...
class Activity(models.Model):
name = models.CharField(max_length=300)
fee = models.ManyToManyField(Classification, through='Fee')
...
class Fee(models.Model):
activity = models.ForeignKey(Activity)
class = models.ForeignKey(Classification)
early_fee = models.IntegerField(decimal_places=2, max_digits=10)
regular_fee = models.IntegerField(decimal_places=2, max_digits=10)
The idea being that there will be a set of fees associated with each Activity and Classification pair. Classification is like Student, Staff, etc.
I know that part works right.
Then in my application, I query for a set of Activities with:
activities = Activity.objects.filter(...)
Which returns a list of activities. I need to display in my template that list of Activities with their Fees. Something like this:
Activity Name
Student Early Price - $4
Student Regular Price - $5
Staff Early Price - $6
Staff Regular Price - $8
But I don't know of an easy way to get this info without a specific get query of the Fees object for each activity/class pair.
I hoped this would work:
activity.fee.all()
But that just returns the Classification Object. Is there a way to get the Fee Object Data for the Pair via the Activities I already queried?
Or am I doing this completely wrong?
Considering michuk's tip to rename "fee" to "classification":
Default name for Fee objects on Activity model will be fee_set. So in order to get your prices, do this:
for a in Activity.objects.all():
a.fee_set.all() #gets you all fees for activity
There's one thing though, as you can see you'll end up doing 1 SELECT on each activity object for fees, there are some apps that can help with that, for example, django-batch-select does only 2 queries in this case.
First of all I think you named your field wrong. This:
fee = models.ManyToManyField(Classification, through='Fee')
should be rather that:
classifications = models.ManyToManyField(Classification, through='Fee')
as ManyToManyField refers to a list of related objects.
In general ManyToManyField, AFAIK, is only a django shortcut to enable easy fetching of all related objects (Classification in your case), with the association table being transparent to the model. What you want is the association table (Fee in your case) not being transparent.
So what I would do is to remove the ManyToManyField field from Activity and simply get all the fees related with the activity. And thenm if you need a Classification for each fee, get the Classification separately.