html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/issues/1851#issuecomment-1292519956,https://api.github.com/repos/simonw/datasette/issues/1851,1292519956,IC_kwDOBm6k_c5NCkoU,15178711,2022-10-26T19:20:33Z,2022-10-26T19:20:33Z,CONTRIBUTOR,"> This could use a new plugin hook, too. I don't want to complicate your life too much, but for things like GIS, I'd want a way to turn regular JSON into SpatiaLite geometries or combine X/Y coordinates into point geometries and such. Happy to help however I can.

 @eyeseast Maybe you could do this with triggers? Like you can insert JSON-friendly data into a ""raw"" table, and create a trigger that transforms that inserted data into the proper table

Here's an example:

```sql
-- meant to be updated from a Datasette insert
create table points_raw(longitude int, latitude int);

-- the target table with proper spatliate geometries
create table points(point geometry);

CREATE TRIGGER insert_points_raw INSERT ON points_raw 
  BEGIN
    insert into points(point) values (makepoint(new.longitude, new.latitude))
  END;
```

You could then POST a new row to `points_raw` like this:
```
POST /db/points_raw
Authorization: Bearer xxx
Content-Type: application/json
{
  ""row"": {
    ""longitude"": 27.64356,
    ""latitude"": -47.29384
  }
}
```

Then SQLite with run the trigger and insert a new row in `points` with the correct geometry point. Downside is you'd have duplicated data with `points_raw`, but maybe it could be a `TEMP` table (or have a cron that deletes all rows from that table every so often?)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1421544654,