Limit API call in power query to only call for new records

[JohannSteyn]

Hello all,

I connected a list of addresses to the Google Maps API which returns the LAT and LONG coordinates, via power query (nice video here: https://www.youtube.com/watch?v=xBF_ZaGW87k&t=16s).

However, each time I refresh the dataset, all addresses are re-queried. This is bad because 1- it takes long and 2- it costs me money.

So, I want to know if there is any way to limit the power query to only call the API if the address does not already have LAT and LONG coordinates from previous queries.

Here's screenshots of the two queries I use:
1. Query on the table that has the addresses: 

2. Query to Google Maps API: 

[v-cgao-msft]

Hi @JohannSteyn ,

The first thing that comes to my mind is incremental refresh. Please see if these help:
incremental refresh with an API call in power quer...

Power BI Incremental Refresh with Web API Data Source

Best Regards,
Gao
Community Support Team

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