html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/datasette/issues/216#issuecomment-381786522,https://api.github.com/repos/simonw/datasette/issues/216,381786522,MDEyOklzc3VlQ29tbWVudDM4MTc4NjUyMg==,9599,simonw,2018-04-16T23:58:45Z,2018-04-16T23:59:13Z,OWNER,"Weird... tests are failing in Travis, despite passing on my local machine. https://travis-ci.org/simonw/datasette/builds/367423706","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381649437,https://api.github.com/repos/simonw/datasette/issues/216,381649437,MDEyOklzc3VlQ29tbWVudDM4MTY0OTQzNw==,9599,simonw,2018-04-16T15:39:21Z,2018-04-16T15:39:21Z,OWNER,"Here's where that SQL gets constructed at the moment:

https://github.com/simonw/datasette/blob/10a34f995c70daa37a8a2aa02c3135a4b023a24c/datasette/app.py#L761-L771","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381649140,https://api.github.com/repos/simonw/datasette/issues/216,381649140,MDEyOklzc3VlQ29tbWVudDM4MTY0OTE0MA==,9599,simonw,2018-04-16T15:38:29Z,2018-04-16T15:38:29Z,OWNER,But what would that SQL look like for `_sort_desc`?,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381648053,https://api.github.com/repos/simonw/datasette/issues/216,381648053,MDEyOklzc3VlQ29tbWVudDM4MTY0ODA1Mw==,9599,simonw,2018-04-16T15:35:17Z,2018-04-16T15:35:17Z,OWNER,"I think the correct SQL is this: https://datasette-issue-189-demo-3.now.sh/salaries-7859114-7859114?sql=select+rowid%2C+*+from+%5B2017+Maryland+state+salaries%5D%0D%0Awhere+%28middle_initial+is+not+null+or+%28middle_initial+is+null+and+rowid+%3E+%3Ap0%29%29%0D%0Aorder+by+middle_initial+limit+101&p0=391

```
select rowid, * from [2017 Maryland state salaries]
where (middle_initial is not null or (middle_initial is null and rowid > :p0))
order by middle_initial limit 101
```

Though this will also need to be taken into account for #198 ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381645973,https://api.github.com/repos/simonw/datasette/issues/216,381645973,MDEyOklzc3VlQ29tbWVudDM4MTY0NTk3Mw==,9599,simonw,2018-04-16T15:29:11Z,2018-04-16T15:29:11Z,OWNER,"I could use `$null` as a magic value that means None. Since I'm applying `quote_plus()` to actual values, any legit strings that look like this will be encoded as `%24null`:

```
>>> urllib.parse.quote_plus('$null')
'%24null'
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381645274,https://api.github.com/repos/simonw/datasette/issues/216,381645274,MDEyOklzc3VlQ29tbWVudDM4MTY0NTI3NA==,9599,simonw,2018-04-16T15:27:16Z,2018-04-16T15:27:16Z,OWNER,"Relevant code:

https://github.com/simonw/datasette/blob/904f1c75a3c17671d25c53b91e177c249d14ab3b/datasette/app.py#L828-L832","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381644355,https://api.github.com/repos/simonw/datasette/issues/216,381644355,MDEyOklzc3VlQ29tbWVudDM4MTY0NDM1NQ==,9599,simonw,2018-04-16T15:24:38Z,2018-04-16T15:24:38Z,OWNER,"So there are two tricky problems to solve here:

* I need a way of encoding `null` into that `_next=` that is unambiguous from the string `None` or `null`. This means introducing some kind of escaping mechanism in those strings. I already use URL encoding as part of the construction of those components here, maybe that can help here?
* I need to figure out what the SQL should be for the ""next"" set of results if the previous value was null. Thankfully we use the primary key as a tie-breaker so this shouldn't be impossible.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,
https://github.com/simonw/datasette/issues/216#issuecomment-381643173,https://api.github.com/repos/simonw/datasette/issues/216,381643173,MDEyOklzc3VlQ29tbWVudDM4MTY0MzE3Mw==,9599,simonw,2018-04-16T15:21:17Z,2018-04-16T15:21:17Z,OWNER,"Yikes, definitely a bug.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",314665147,Bug: Sort by column with NULL in next_page URL,