I'm a prolific editor. I've made edits on a whole bunch of different sites. I'd like to know exactly how many edits I've made, network-wide. Is there a way to find out, perhaps with SEDE?
You can use SEDE for that if you don't mind the data can be up to 7 days behind.
For your purpose I've create this query that visits each database and then finds the rows in the posthistory table for events of type 4, 5 and 6 (title, body and tag edits). The aggregate of the per database result is stored and then in the end queried to form the final result. I didn't bother to filter out edits on your own posts but feel free to make the adjustments needed for a single site before you edit the change in your own fork.
The query needs your accountid, which you can find in the url of your networkprofile.
declare @accountid as int = ##accountid?5129611## -- result table, don't rename and keep the site column create table #results ( site nvarchar(250) , title int , body int , tag int , revs int); declare @sql nvarchar(max) = '' -- holds build up sql string -- build one biq union sql, for each db select @sql = @sql + iif( len(@sql) > 1 , 'union' , 'insert into #results' ) + -- here goes the per site query, fully qualify the database objects N' select ''' + name + ''' , sum() as [title] , sum() as [body] , sum() as [tag] , count(*) as [revtot] from ( select revisionguid ,  ,  ,  from (select revisionguid , posthistorytypeid from ' + quotename(name) + '.dbo.posthistory ph inner join ' + quotename(name) + '.dbo.users u on u.id = ph.userid where posthistorytypeid in (4,5,6) and u.accountid = ' + cast(@accountid as nvarchar) +' ) as data pivot ( count(posthistorytypeid) for posthistorytypeid in ( , , ) ) as pvt ) alldata ' from sys.databases where database_id > 5 -- and (name not like '%.Meta' or name = 'StackExchange.Meta') --print @sql -- execute it exec (@sql) -- show results select 'total' as site , sum(title) as title , sum(body) as body , sum(tag) as tag , sum(revs) as [#revisions] from #results where revs > 0 union all select * from #results where revs > 0 drop table #results
When run today this is what the result will look like:
Keep in mind SEDE is only updated once a week, on Sunday.