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/1699#issuecomment-1094453751,https://api.github.com/repos/simonw/datasette/issues/1699,1094453751,IC_kwDOBm6k_c5BPAn3,25778,2022-04-11T01:32:12Z,2022-04-11T01:32:12Z,CONTRIBUTOR,"Was looking through old issues and realized a bunch of this got discussed in #1101 (including by me!), so sorry to rehash all this. Happy to help with whatever piece of it I can. Would be very excited to be able to use format plugins with exports.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1193090967,
https://github.com/simonw/datasette/issues/1699#issuecomment-1092386254,https://api.github.com/repos/simonw/datasette/issues/1699,1092386254,IC_kwDOBm6k_c5BHH3O,25778,2022-04-08T02:39:25Z,2022-04-08T02:39:25Z,CONTRIBUTOR,"And just to think this through a little more, here's what `stream_geojson` might look like:

```python
async def stream_geojson(datasette, columns, rows, database, stream):
    db = datasette.get_database(database)
    for row in rows:
        feature = await row_to_geojson(row, db)
        stream.write(feature + ""\n"") # just assuming newline mode for now
```

Alternately, that could be an async generator, like this:

```python
async def stream_geojson(datasette, columns, rows, database):
    db = datasette.get_database(database)
    for row in rows:
        feature = await row_to_geojson(row, db)
        yield feature
```

Not sure which makes more sense, but I think this pattern would open up a lot of possibility. If you had your [stream_indented_json](https://til.simonwillison.net/python/output-json-array-streaming) function, you could do `yield from stream_indented_json(rows, 2)` and be one your way.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1193090967,
https://github.com/simonw/datasette/issues/1699#issuecomment-1092370880,https://api.github.com/repos/simonw/datasette/issues/1699,1092370880,IC_kwDOBm6k_c5BHEHA,25778,2022-04-08T02:07:40Z,2022-04-08T02:07:40Z,CONTRIBUTOR,"So maybe `render_output_render` returns something like this:

```python
@hookimpl
def register_output_renderer(datasette):
    return {
        ""extension"": ""geojson"",
        ""render"": render_geojson,
        ""stream"": stream_geojson,
        ""can_render"": can_render_geojson,
    }
```

And stream gets an iterator, instead of a list of rows, so it can efficiently handle large queries. Maybe it also gets passed a destination stream, or it returns an iterator. I'm not sure what makes more sense. Either way, that might cover both CLI exports and streaming responses.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1193090967,
https://github.com/simonw/datasette/issues/1699#issuecomment-1092357672,https://api.github.com/repos/simonw/datasette/issues/1699,1092357672,IC_kwDOBm6k_c5BHA4o,25778,2022-04-08T01:39:40Z,2022-04-08T01:39:40Z,CONTRIBUTOR,"> My best thought on how to differentiate them so far is plugins: if Datasette plugins that provide alternative outputs - like .geojson and .yml and suchlike - also work for the datasette query command that would make a lot of sense to me.

That's my thinking, too. It's really the thing I've been wanting since writing `datasette-geojson`, since I'm always exporting with `datasette --get`. The workflow I'm always looking for is something like this:

```sh
cd alltheplaces-datasette
datasette query dunkin_in_suffolk -f geojson -o dunkin_in_suffolk.geojson
```

I think this probably needs either a new plugin hook separate from `register_output_renderer` or a way to use that without going through the HTTP stack. Or maybe a render mode that writes to a stream instead of a response. Maybe there's a new key in the dictionary that `register_output_renderer` returns that handles CLI exports.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1193090967,