Modify query after datasource is created

[Ash1]

Hello 

Is there a way to modify the datasource from which data has been loaded to PowerBI?

Initially when I have created a report, I used Import query option to retrieve all the records, with all the columns in a SQL Table. The table has more than 65 M records and now when I try to refresh the query, it fails with memory not available erorrs.

What I'm trying do it to limit to only the columns that I need to get the report functional. so I tried,  to add the query wiht the where clause 

Edit Queries -> Data Source Settings 

However the query window is greyed out. Is ther a way out without building a new report altogather?

Thanks

[Phil_Seamark]

Hi @Ash1

If you can get into the Query Editor try clicking this button

Hopefully it brings up the query window where you can replace your query with one that contains just the columns you need and perhaps a WHERE clause that restricts your rows to exactly what you need.

[Ash1]

Thanks for the reply,

It allows me to update the qeury, but I'm running into issues when I'm trying to apply the changes 

Error: The key didn't match any rows in the table

Details: 

Key= Record

Table = Table 

~Ashwin

[v-huizhn-msft]

Hi @Ash1,

You click the button as @Phil_Seamark posted, you will get the Navigator like the following screenshot.

You use the same SQL Statement in highlighted line area as in SQL Server, it return the error message? It's weird. Please close the Edit Query and open it, and check if it works fine.

Thanks,
Angelia

[Phil_Seamark]

Oh ok, so maybe edit the query to limit the rows and use the Query Editor to remove the columns.  

Can you revert the query back to what it was but just put a TOP 100 in the SELECT ?

[Ash1]

No luck.

I tried selecting all the columns with the dateadd fileter to limit rows. I'm seeing same error 

The key didn't match any rows in the table

[vanessafvg]

are you getting the same issue if you run the query in sql?

[Ash1]

No. Query runs fine on SQL Server. 

[v-huizhn-msft]

Hi @Ash1,

Have you resolved your issue? Please mark the right reply as answer. If you have not, don't hesitate to ask.

Thanks,
Angelia