BigQuery—Save query and result with unique private URL will be done by automatic ( without specific sharing )
After run query unique URL provided.
Example URL pattern:
https://console.cloud.google.com/bigquery?project=mb2jp-152723&pli=1&j=bquxjob_6947b1a0_1655c4e25ad&page=queryresults
URL has changed by automatic in web browser address bar.
Example URL pattern:
https://console.cloud.google.com/bigquery?project=mb2jp-152723&pli=1&j=bquxjob_4c90e92f_1655c4f6584&page=queryresults
You can see first query and result!
https://console.cloud.google.com/bigquery?project=mb2jp-152723&pli=1&j=bquxjob_6947b1a0_1655c4e25ad&page=queryresults
What a wonderful feature on Bigquery.
When URL will be expired?
I don’t know but maybe same as Query History's limitation.
Because Query history links to unique URL with auto saving.
The job and query histories in the UI include all load, export, copy, and query jobs you submitted in the past 6 months (up to 1,000 entries). The limit of 1,000 jobs is cumulative across all job types.
Using the BigQuery Web UI | BigQuery | Google Cloud
If you need share query with another people then probably you should choose specific sharing by Save Query feature.
This case is about NEW WebUI Beat on 2018-08 . But I noticed OLD WebUI also has this feature.