I am beginner to SSAS,
So, I have simple question, can we create 1 cube from 2 datasources?
And how? tq
Please read the documentation from MS: https://learn.microsoft.com/en-us/analysis-services/tutorial-tabular-1200/lesson-2-add-data?view=asallproducts-allversions#create-a-connection
You can create multiple data sources to a single cube.
Related
Looks like there is no longer data being published to the public NOAA forecast table in bigquery's public dataset. Does anyone know why that is happening? I cannot find any info about the data being discontinued on either website.
project: bigquery-public-data
dataset: noaa_global_forecast_system
table: NOAA_GFS0P25
BigQuery sql that you can use to test this out:
SELECT * FROM `bigquery-public-data.noaa_global_forecast_system.NOAA_GFS0P25` WHERE DATE(creation_time) >= "2022-04-11" LIMIT 100
New forecast data has not been inserted into the table since 4/10/22. They have missed a day before, but we have not seen them miss multiple days in a row before. We would like to know if we need to migrate to a new forecast source, but we cannot find any info on whether this one is being shut down or if they are just having temporary technical difficulties.
Thanks for the heads up! This looks like a temporary technical issue, but we are working on getting this dataset back up and running.
enter image description hereI'm beginner in SSAS, actually I work on SSAS Olap cube I have an issue which is I can not add customer fields to charge dimension or to charge fact (to be displayed on power bi )
Thank you in advance
The general answer is:
Add dimension to the cube
Open "Dimension Usage" tab
Click on a cell crossing Measure Group vs Dimension
Use "Referenced" type and select another dimension as a Reference
But please provide more details:
What have you tried before asking a question here?
Why it didn't help?
What are you trying to achieve (with simple example in Excel, plain text etc.)? Like Customer: A,B,C, Charge: X,Y,Z. Their relations. What is your expectation.
I have 30 daily sharded tables in Big Query from Nov 1 to Nov 30, 2016.
Each of these tables follow the naming convention of "sample_datamart_YYYYMMDD".
Each of these daily tables have a field called timestampServer.
My goal is to advance the data by 24 hours at 00:00:00 UTC every day.
So that the data is kept current without me having to copy the tables.
Is there any way to :
1) do a calculation on the field timestampServer so that it gets updated every 24 hours?
2) and at the same time rename the table name from sample_datamart_20161130 to sample_datamart_20161201?
I've read the other posts and I think those are more on aggregations in a 30 day window. My objective is not to do any aggreagtions. I just want to move the whole dataset forward by 24 hours so that when I searched for the last 1 day, there will always be data there.
Does anyone know if Google Cloud Datasets: Update be able to perform the tasks?
https://cloud.google.com/bigquery/docs/reference/rest/v2/datasets/update#try-it
Thanks very much for any guidance.
As of #2 - how to rename the table name from sample_datamart_20161130
to sample_datamart_20161201?
This can be achieved by copying table to new table and then deleting original table.
Zero extra cost as copy job is free of charge
Table can be copied with Jobs: Insert API using copy configuration and then table can be deleted using Tables: Delete API
Just wanted to note that above answer just directly answers your (second) question. But somehow I feel you can go wrong direction. If you want to describe in more details what your are trying to achieve (as oposed to how you think you will implement it) we might be able to provide better help for you. If you will go this way - I would recommend to post it as a separate question :o)
is there away to extract cube connections between fact and Dimensions as they are defined in the dimension usage ?
in connection i mean the Dimension Table and key columns as well as Measure group name, Columns as they are defined in the dimention usage
i am aware of ssas DMV as well as analysis server Stored procedure project (codeplex) but couldn't find my answer there .
thank u
Will the BIDS Helper Printer Friendly Dimension Usage feature or Column Usage Reports feature accomplish what you want?
Were you just wanting a PDF for documentation? If you need the C# code so you can embed it in your own program let me know.
I am relatively new to this depth of MDX, but here is my dilemma. My goal is to implement a calculated member using a .Net Stored Procedure. The calculation (XIRR) will be based on a set of cash flow dates and cash flow amounts. Ideally this would be a calculation in my cube that is available as a measure to Excel/Browser users.
So to start simple I am just trying to implement my own COUNT calculated member/measure (not even using .Net) to say count the # of members in a given dimensions based on the current context. So lets say I have a dimensions Customer with a Customer Id Key. And let's say there are a total of 100 customers in my database. So Count(Customer.CustomerId.AllMembers) would be 100. Now when you start using the browser and say filter on Customer.CustomerId.&1, Customer.CustomerId.&2 (customer id 1 and 2) I would expect my count calculated member to return 2 but it returns the total 100 count. I have tried using exists. I am sure there is something that I am just fundamentally not understanding yet.
Hopefully this makes sense, would hugely appreciate any help from someone that has a good understanding of SSAS/MDX and calculations. Thanks in advance.
Marty
You may have some issues here, I did when I tried to do a similar thing.
Your calculated member is not honouring the client sub-select, which is normal. What in theory you would do is create a dynamic set, and then use that in the calculated member to force the dimension count to be evaluated in the context of the subcube your filters have created. Mosha has a good article here: http://sqlblog.com/blogs/mosha/archive/2007/08/25/mdx-in-katmai-dynamic-named-sets.aspx
So you'd end up with something like:
CREATE DYNAMIC SET CurrentCube.Customers AS
EXISTING(Customer.CustomerId.CHILDREN);
CREATE MEMBER CurrentCube.Measures.CustomerCount AS
Customers.COUNT
Now the real problem you'll have is a bug in SSAS https://connect.microsoft.com/SQLServer/feedback/details/484865/calcuated-member-with-a-reference-to-dynamic-named-set-kills-the-cubes-performance so the code above, which will probably work just fine locally, will kill a production cube. This was an exciting learning experience for me.
See if you can get any of the workarounds to work, I couldn't.
I was able to get what I wanted, but I had to create query-scoped dynamic sets as part of the MDX query, I wasn't able to create it as a cube object:
WITH DYNAMIC SET Customers AS
EXISTING(Customer.CustomerId.CHILDREN);
MEMBER Measures.CustomerCount AS
Customers.COUNT
SELECT
Measures.CustomerCount
ON COLUMNS
FROM [Cube]
WHERE Customer.CustomerId.&[1]
Let us know how you get on.