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Anonymous
Not applicable

Power BI Desktop web scraping incremental import / not delete old rows

Hi Power guys

 

I can't be the first one with this challenge 🙂

I have a problem with scraping data from a source, which of course updates, but than the old rows disappears.

(The source only have the last X days of data displayed).

 

Let's say I scrap a website / table like:

01-28-2020  123

01-29-2020  234

01-30-2020  345

01-31-2020  456

02-01-2020  567

02-02-2020  678

02-03-2020  789

02-04-2020  891

 

How do I refresh the data and still keep the old dates (rows) in Power BI Desktop / without "deleting" them:

01-28-2020  123

01-29-2020  234

01-30-2020  345

01-31-2020  456

02-01-2020  567

02-02-2020  678

02-03-2020  789

02-04-2020  891

02-05-2020  894

02-06-2020  895

02-07-2020  896

02-08-2020  897

 

Is there an easy way, like just hit a button "insert data as new rows" / "keep old rows"?

I have seen someone duplicate the data to a new table and merge, but it take forever if you what to do it offen.

 

The problem comes from:

https://socialblade.com which only display a certain number of dates (rows) back, and thereby hide the historic data.

 

(I'm a newbie)

Thank you so much, best regards 

Christian

 

1 ACCEPTED SOLUTION

Power BI has no persistent storage of its own. That is because it is a reporting database, not a storage DB. I wrote an article on one way to solve for the issue you describe. 
https://exceleratorbi.com.au/keeping-track-of-changes-on-a-website-power-bi/



* Matt is an 8 times Microsoft MVP (Power BI) and author of the Power BI Book Supercharge Power BI.

View solution in original post

2 REPLIES 2

Power BI has no persistent storage of its own. That is because it is a reporting database, not a storage DB. I wrote an article on one way to solve for the issue you describe. 
https://exceleratorbi.com.au/keeping-track-of-changes-on-a-website-power-bi/



* Matt is an 8 times Microsoft MVP (Power BI) and author of the Power BI Book Supercharge Power BI.
Anonymous
Not applicable

Wow Thank you so much Matt.
Your answer and article really helped me!

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