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
292011379,MDU6SXNzdWUyOTIwMTEzNzk=,184,500 from missing table name,222245,closed,0,,,4,2018-01-26T19:46:45Z,2019-05-21T16:17:29Z,2018-04-13T18:18:59Z,NONE,,"https://github.com/simonw/datasette/blob/56623e48da5412b25fb39cc26b9c743b684dd968/datasette/app.py#L517-L519 throws an error if it gets an empty list back. Simplest solution is to write a helper func that just says 

```python
result = list(await self.execute(name, sql, params)
if result:
    return result[0][0]
```

and use it anywhere `[0][0]` is now.",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/184/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
313785206,MDExOlB1bGxSZXF1ZXN0MTgxMjQ3NTY4,202,Raise 404 on nonexistent table URLs,45057,closed,0,,,2,2018-04-12T15:47:06Z,2018-04-13T19:22:56Z,2018-04-13T18:19:15Z,CONTRIBUTOR,simonw/datasette/pulls/202,"Currently they just 500. Also cleaned the logic up a bit, I hope I didn't miss anything.

This is issue #184.",107914493,pull,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/202/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,
310882100,MDU6SXNzdWUzMTA4ODIxMDA=,193,Cleaner mechanism for handling custom errors,9599,closed,0,,,3,2018-04-03T15:19:13Z,2018-04-13T18:18:59Z,2018-04-13T18:18:59Z,OWNER,,"This code is pretty messy:

https://github.com/simonw/datasette/blob/0abd3abacb309a2bd5913a7a2df4e9256585b1bb/datasette/app.py#L245-L265

Instead, it would be nice if I could raise an exception that would be converted into the appropriate JSON or HTML error message, with a corresponding HTTP code.",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/193/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed