cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Highlighted
Post Prodigy
Post Prodigy

Incremental Refresh not working?

Hi,

 

Have set up incemental refresh on a table and first refresh completed and had sql similar to below.

 

Expecting subsequent incremental refreshes to be much quicker

 

When look at database (oracle) looks to have similar sql to initial load ....<1000

 

Is this expected?

 

Had been expecting to see somewhere in the sql the RangeStart and RangeEnd parameters as set to store last 2 years worth of data but update data in last 2 days hence would have expected to see >= '11-MAY-2020' AND < '13-MAY-2020' or similar

 


from <view> "$Table") "$Paged"
where rownum <= 1000
 
Thanks

Details

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted
Super User IV
Super User IV

Re: Incremental Refresh not working?

Hi there

If you can have a look in Power Query where you configured the RangeStart and RangeEnd and see if you can view the Native Query when right clicking on the last step.

If you can it should query fold (which will allow for incremental refreshing).

If no query folding then it cannot complete the incremental refresh.




Did I answer your question? Mark my post as a solution!

Proud to be a Super User!







Power BI Blog

View solution in original post

3 REPLIES 3
Highlighted
Super User IV
Super User IV

Re: Incremental Refresh not working?

Hi there

If you can have a look in Power Query where you configured the RangeStart and RangeEnd and see if you can view the Native Query when right clicking on the last step.

If you can it should query fold (which will allow for incremental refreshing).

If no query folding then it cannot complete the incremental refresh.




Did I answer your question? Mark my post as a solution!

Proud to be a Super User!







Power BI Blog

View solution in original post

Highlighted
Microsoft
Microsoft

Re: Incremental Refresh not working?

Hi @po ,

 

Incremental refresh is based on transferring the partition filter to the data source system to reduce the amount of refreshed data. Once the source data don't support query fold, the entire data is refreshed into power bi memory.

 

SQL-based data sources (such as SQL, Oracle, and Teradata) can determine whether the incremental refresh can be performed normally by viewing the warning when configuring incremental refresh.

Untitled picture.png

Best Regards,

Dedmon Dai

Highlighted
Post Prodigy
Post Prodigy

Re: Incremental Refresh not working?

Hi,

 

Thanks for reply.

 

Guess since neevr got query folding error when set it up oracle supports query folding.

 

Thanks

 

Helpful resources

Announcements
Community Blog

Community Blog

Visit our Community Blog for articles, guides, and information created by fellow community members.

Using the Community

Using the Community

Need help with the Power BI Community? Our 'Using the Community' support articles are a great place to start.

Galleries

Galleries

Looking for inspiration on how to present your data? Need instructional videos? Check out our Galleries!

Community Summit North America

Community Summit North America

Innovate, Collaborate, Grow. The top training and networking event across the globe for Microsoft Business Applications

Top Solution Authors
Top Kudoed Authors