id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
946553953,MDExOlB1bGxSZXF1ZXN0NjkxNzA3NDA5,1397,"Fix for race condition in refresh_schemas(), closes #1231",9599,closed,0,,,0,2021-07-16T19:44:43Z,2021-07-16T19:45:00Z,2021-07-16T19:44:58Z,OWNER,simonw/datasette/pulls/1397,,107914493,pull,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/1397/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,
811367257,MDU6SXNzdWU4MTEzNjcyNTc=,1231,Race condition errors in new refresh_schemas() mechanism,9599,closed,0,,,11,2021-02-18T18:49:54Z,2021-07-16T19:44:59Z,2021-07-16T19:44:59Z,OWNER,,I tried running a Locust load test against Datasette and hit an error message about a failure to create tables because they already existed. I think this means there are race conditions in the new `refresh_schemas()` mechanism added in #1150.,107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/1231/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
944870799,MDU6SXNzdWU5NDQ4NzA3OTk=,1394,Big performance boost on faceting: skip the inner order by,9599,closed,0,,,4,2021-07-14T23:32:29Z,2021-07-16T02:23:32Z,2021-07-15T00:05:50Z,OWNER,,"I just noticed something that could make for a huge performance improvement in faceting.

The default query used by Datasette when faceting looks like this:
```sql
select
  country_long,
  count(*)
from (
  select * from [global-power-plants] order by rowid
)
where
  country_long is not null
group by
  country_long
order by
  count(*) desc
```
Here it takes 53ms: https://global-power-plants.datasettes.com/global-power-plants?sql=select%0D%0A++country_long%2C%0D%0A++count%28*%29%0D%0Afrom+%28%0D%0A++select+*+from+%5Bglobal-power-plants%5D+order+by+rowid%0D%0A%29%0D%0Awhere%0D%0A++country_long+is+not+null%0D%0Agroup+by%0D%0A++country_long%0D%0Aorder+by%0D%0A++count%28*%29+desc

Note that there's a `order by rowid` in there which isn't necessary - the order on that inner query doesn't matter since we're grouping and counting.

I had assumed SQLite would optimize this away - but it turns out it doesn't! Consider this version of the query, with that pointless order by removed:
```
select
  country_long,
  count(*)
from (
  select * from [global-power-plants]
)
where
  country_long is not null
group by
  country_long
order by
  count(*) desc
```
https://global-power-plants.datasettes.com/global-power-plants?sql=select%0D%0A++country_long%2C%0D%0A++count%28*%29%0D%0Afrom+%28%0D%0A++select+*+from+%5Bglobal-power-plants%5D%0D%0A%29%0D%0Awhere%0D%0A++country_long+is+not+null%0D%0Agroup+by%0D%0A++country_long%0D%0Aorder+by%0D%0A++count%28*%29+desc runs in 7.2ms!

I tried this optimization on a table with 2.5m rows in it - without the optimization it took 5 seconds, with the optimization it took 450ms. So this is a very significant improvement!",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/1394/reactions"", ""total_count"": 2, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 1, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
612673948,MDU6SXNzdWU2MTI2NzM5NDg=,759,fts search on a column doesn't work anymore due to escape_fts,133845,closed,0,,,3,2020-05-05T15:03:44Z,2021-07-16T02:11:54Z,2020-05-06T17:50:57Z,NONE,,"Hi and first, thank you for this awesome work you make with this projet.

On a db indexed in full text search, I can't query on indexed column anymore.

This request ""cauvin language:ita"": is running smoothly on a old version of datasette but not on the current version.

Compare the current version query
`select uuid, title, authors, year, series, language, formats, publisher, tags, identifiers from summary where rowid in (select rowid from summary_fts where summary_fts match escape_fts(:search)) order by uuid limit 101`


To an older version:

`select title, authors, series, uuid, language, identifiers, tags, publisher, formats, year, links from summary where rowid in (select rowid from summary_fts where summary_fts match :search) order by uuid limit 101`

_language_ is a searchable column but now the search string is known as ""cauvin language:ita"" literally as a search term. columns are not parsed.


",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/759/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed