After loading the dataset, you can split into the query editor.
If the address consists of full address in one field,
1. Go to Query editor.
2. Click on the address field and click on split by and select delimiter as "," and click ok.
But before splitting sees that all addresses are in a similar format to split into country/city/state/pin.etc
3. Then the full address would be split as per commas.
4. Edit the split columns as per use.