Forum Discussion
Power BI Paginated Report with BigQuery DirectQuery – Filters not pushed down
Hi m_andel
Since your only goal in creating the Semantic Model was to connect Paginated Reports to BigQuery — and ODBC isn’t an option, the challenge is that Power BI currently doesn’t support direct SQL-style parameterized queries against BigQuery from within Paginated Reports. When you use a Semantic Model in DirectQuery mode, Power BI’s internal DAX translation layer limits how effectively filters are pushed down, which is why you see all 13M rows being retrieved before filtering. The most practical alternative is to connect the Paginated Report directly to BigQuery using the built-in BigQuery connector (available under the “Google BigQuery” data source in Report Builder) rather than going through a Semantic Model. This lets you write native SQL queries with report parameters directly embedded in the query (for example, filtering by date before execution), ensuring that only the necessary data is returned. If that connector isn’t available in your environment, you could also build a Power BI dataflow or Fabric data pipeline to pre-filter and materialize a smaller table or view in BigQuery, then point your Paginated Report to that optimized dataset. The key is to move filtering and shaping logic as close to the BigQuery source as possible to minimize data transfer and improve performance.
Hi Poojara_D12 ,
I finally found out how to Query Google BigQuery:
I created a datasource with all the columns from my BigQuery View, but when I try to use this datasource in a DataSet I can not enter a query. And I cannot modify this datasource after i saved it. (That's not very comfortable.)
What am I missing here?
Hi m_andel,
You are not missing anything, that is the current design. Power Query handles all query logic internally so the sql text box in the dataset properties is disabled.
So to customize your query or add parameters, edit it directly inside the Power Query editor using Value.NativeQuery.Inside the M code use a parameterized native query like this:
let
Source = Value.NativeQuery(
BigQuery.Database(null),
"SELECT * FROM ENTER_NAME WHERE Date >= @StartDate AND Date <= @EndDate",
[StartDate = Parameters!StartDate.Value, EndDate = Parameters!EndDate.Value]
)
in
Source
Save and close the power query the dataset will now return filtered data directly from BigQuery.
Thanks and regards,
Anjan Kumar Chippa
Hi, v-achippa
I can now load data. My last issue is the connection to powerbi. Is it possible to use a google service account with a key file? I have found no option to configure the connection this way.
Hi m_andel,
Currently using a google service account key file is not supported in Power Query based connections within Power BI Report Builder or the Power BI Service. Only OAuth authentication with a user account is supported, so please use OAuth sign-in for now.
Thanks and regards,
Anjan Kumar Chippa
