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
1821108702,I_kwDOCGYnMM5si-ne,579,Special handling for SQLite column of type `JSON`,15178711,open,0,,,0,2023-07-25T20:37:23Z,2023-07-25T20:37:23Z,,CONTRIBUTOR,,"`sqlite-utils` should detect and have specially handling for column with a `JSON` column. For example:

```sql
CREATE TABLE ""dogs"" (
  id INTEGER PRIMARY KEY,
  name TEXT,
  friends JSON 
);
```

## Automatic Nesting

According to [""Nested JSON Values""](https://sqlite-utils.datasette.io/en/stable/cli.html#nested-json-values), sqlite-utils will only expand JSON if the `--json-cols` flag is passed. It looks like it'll try to `json.load` all text column to test if its JSON, which can get expensive on non-json columns. 

Instead, `sqlite-utils` should be default (ie without the `--json-cols` flags) do the `maybe_json()` operation on columns with a declared `JSON` type. So the above table would expand the `""friends""` column as expected, withoutthe `--json-cols` flag:

```bash
sqlite-utils dogs.db ""select * from dogs"" | python -mjson.tool
```

```
[
    {
        ""id"": 1,
        ""name"": ""Cleo"",
        ""friends"": [
            {
                ""name"": ""Pancakes""
            },
            {
                ""name"": ""Bailey""
            }
        ]
    }
]
```

---

I'm sure there's other ways `sqlite-utils` can specially handle JSON columns, so keeping this open while I think of more",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/579/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1801394744,I_kwDOCGYnMM5rXxo4,567,Plugin system,15178711,closed,0,,,9,2023-07-12T17:02:14Z,2023-07-22T22:59:37Z,2023-07-22T22:59:36Z,CONTRIBUTOR,,"I'd like there to be a plugin system for sqlite-utils, similar to the datasette/llm plugins. I'd like to make plugins that would do things like:

- Register SQLite extensions for more SQL functions + virtual tables
- Register new subcommands
- Different input file formats for `sqlite-utils memory`
- Different output file formats (in addition to `--csv` `--tsv` `--nl` etc.

A few real-world use-cases of plugins I'd like to see in sqlite-utils:

- Register many of my sqlite extensions in sqlite-utils (`sqlite-http`, `sqlite-lines`, `sqlite-regex`, etc.)
- New subcommands to work with `sqlite-vss` vector tables
- Input/ouput Parquet/Avro/Arrow IPC files with `sqlite-arrow`",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/567/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
1816917522,PR_kwDOCGYnMM5WJ6Jm,573,feat: Implement a prepare_connection plugin hook,15178711,closed,0,,,4,2023-07-22T22:48:44Z,2023-07-22T22:59:09Z,2023-07-22T22:59:09Z,CONTRIBUTOR,simonw/sqlite-utils/pulls/573,"Just like the [Datasette prepare_connection hook](https://docs.datasette.io/en/stable/plugin_hooks.html#prepare-connection-conn-database-datasette), this PR adds a similar hook for the `sqlite-utils` plugin system. 

The sole argument is `conn`, since I don't believe a `database` or `datasette` argument would be relevant here. 

I want to do this so I can release `sqlite-utils` plugins for my [SQLite extensions](https://github.com/asg017/sqlite-ecosystem), similar to the Datasette plugins I've release for them. 

An example plugin: https://gist.github.com/asg017/d7cdf0d56e2be87efda28cebee27fa3c

```bash
$ sqlite-utils install https://gist.github.com/asg017/d7cdf0d56e2be87efda28cebee27fa3c/archive/5f5ad549a40860787629c69ca120a08c32519e99.zip

$ sqlite-utils memory 'select hello(""alex"") as response'
[{""response"": ""Hello, alex!""}]
```
Refs:
- #574 

<!-- readthedocs-preview sqlite-utils start -->
----
:books: Documentation preview :books:: https://sqlite-utils--573.org.readthedocs.build/en/573/

<!-- readthedocs-preview sqlite-utils end -->",140912432,pull,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/573/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,