here is a preliminary design from awhile ago that I did for this feature to help with scoping. Actual designs are still TBD

Is this question for mobile or desktop? It doesn't look like it's instrumented so I think we've need add instrumentation (possibly for both?)

If we don't want to write any code, it's possible just looking at access logs with fulltext parameter and Special:Search page would be a good proxy for this information
e.g. https://en.wikipedia.org/w/index.php?title=Special%3ASearch&fulltext=1&search=ss

Focus for now on data we have already - create followup if instrumentation is necessary!

Just noting that this does the same thing as "search pages containing" on mobile

As a proxy for search within pages we can look at uri_query in the webrequest table for a given hour using https://superset.wikimedia.org/sqllab.
The queries constructed on mobile and desktop are slightly different. Mobile URLs will always begin "?fulltext=search" and desktop "?fulltext=1"
To avoid timeout issues I've limited results to a single hour. on a single day on en.wikipedia.org but I am currently getting server errors so can't get these queries to complete. @jwang / @KSarabia-WMF any chance these queries work for you?

Mobile:
select count(*) from webrequest WHERE year = 2024 AND month = 10 AND day = 31 AND hour = 1 AND webrequest_source = 'text' AND uri_host = 'en.m.wikipedia.org' AND "uri_query" LIKE '?fulltext=search&search=%'

Desktop:
select count(*) from webrequest WHERE year = 2024 AND month = 10 AND day = 31 AND hour = 1 AND webrequest_source = 'text' AND uri_host = 'en.wikipedia.org' AND content_type = 'text/html' AND "uri_query" LIKE '?fulltext=1&search=%'

Ok modified the query and managed to run in on the latest snapshot

For mobile:
select count(*) from wmf.webrequest WHERE year = 2024 AND month = 11 AND day = 22 AND hour = 15 AND webrequest_source = 'text' AND uri_host = 'en.m.wikipedia.org' AND "uri_query" LIKE '?fulltext=search&search=%'

417

For desktop:
select count(*) from wmf.webrequest WHERE year = 2024 AND month = 11 AND day = 22 AND hour = 15 AND webrequest_source = 'text' AND uri_host = 'en.wikipedia.org' AND "uri_query" LIKE '?fulltext=1&search=%'

2403

So traffic seems pretty low to me.

Also ran the following query (fulltext searches across all projects) regardless of platform or entry point, so that we include subsequent searches:
select count(*) from wmf.webrequest WHERE year = 2024 AND month = 11 AND day = 22 AND hour = 15 AND webrequest_source = 'text' AND "uri_query" LIKE '%fulltext=%'

147783

@ovasileva does that give you the answers you needed or do you need me to probe some more, and/or have any follow up questions?