issue_comments

Actually for the tie-breaker it should be something like https://latest.datasette.io/fixtures?sql=select+pk%2C+created%2C+planet_int%2C+on_earth%2C+state%2C+city_id%2C+neighborhood%2C+tags%2C+complex_array%2C+distinct_some_null+from+facetable+where+%28created+%3E+%3Ap1+or+%28created+%3D+%3Ap1+and+%28%28pk+%3E+%3Ap0%29%29%29%29+order+by+created%2C+pk+limit+11&p0=10&p1=2019-01-16+08%3A00%3A00 sql where ( created > :p1 or ( created = :p1 and ((pk > :p0)) ) ) But with rowid and timestamp in place of pk and created.

If previous page ended at 2018-02-11T16:32:53+00:00: sql select search_index.rowid, search_index.type, search_index.key, search_index.title, search_index.category, search_index.timestamp, search_index.search_1 from search_index where date("timestamp") = '2018-02-11' and timestamp < '2018-02-11T16:32:53+00:00' order by search_index.timestamp desc, rowid limit 41

Datasette's implementation is complex because it has to support compound primary keys: https://github.com/simonw/datasette/blob/a258339a935d8d29a95940ef1db01e98bb85ae63/datasette/utils/init.py#L88-L114 - but that's not something that's needed for dogsheep-beta.

It's a shame Datasette doesn't currently have an easy way to implement sorted-by-rank keyset-paginated using a TableView or QueryView. I'll have to do this using the custom SQL query constructed in the plugin: https://github.com/dogsheep/dogsheep-beta/blob/bed9df2b3ef68189e2e445427721a28f4e9b4887/dogsheep_beta/init.py#L8-L43

I'm going to try for keyset pagination sorted by relevance just as a learning exercise.

It feels a bit weird to implement keyset pagination against results sorted by rank because the ranks could change substantially if the search index gets updated while the user is paginating.

I may just ignore that though. If you want reliable pagination you can get it by sorting by date. Maybe it doesn't even make sense to offer pagination if you sort by relevance?

Should I do this with offset/limit or should I do proper keyset pagination?

I think keyset because then it will work well for the full search interface with no filters or search string.