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
1988525411,I_kwDOCGYnMM52hn1j,603,Pyhton 3.12 Bug report,1324252,open,0,,,1,2023-11-10T22:57:48Z,2023-12-08T05:10:31Z,,NONE,,"I start with new python3 verison 3.12.0
Also have the error where connect DataBase

```
Traceback (most recent call last):
  File ""/home/t/Development/python/FKPJ/ClinicSYS/run.py"", line 1, in <module>
    import re, os, io, json, sqlite_utils, requests, pytz, logging
  File ""/home/t/.local/lib/python3.12/site-packages/sqlite_utils/__init__.py"", line 1, in <module>
    from .db import Database
  File ""/home/t/.local/lib/python3.12/site-packages/sqlite_utils/db.py"", line 277, in <module>
    class Database:
  File ""/home/t/.local/lib/python3.12/site-packages/sqlite_utils/db.py"", line 306, in Database
    filename_or_conn: Optional[Union[str, pathlib.Path, sqlite3.Connection]] = None,
                                                        ^^^^^^^^^^^^^^^^^^
```
This bug come from `sqlite-utils` since's v3.33.
Anyone get the same ?

As well now of the resolved plan just keep the sqlite-utils version in python3.12 with v3.32.1 [tested]
but where are the sqlite3.Connection problem.... 

This won't happen on python version down to 3.11[tested]
Just the python3.12.0, I have test this error are come from the sqlite3 connection
The error say from `sqlite_utils` and with the sqlite3 Connection, what can I do.

Let fix together.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/603/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1879214365,I_kwDOCGYnMM5wAokd,590,Ability to tell if a Database is an in-memory one,9599,open,0,,,1,2023-09-03T19:50:15Z,2023-09-03T19:50:36Z,,OWNER,,"Currently the constructor accepts `memory=True` or `memory_name=...` and uses those to create a connection, but does not record what those values were:

https://github.com/simonw/sqlite-utils/blob/1260bdc7bfe31c36c272572c6389125f8de6ef71/sqlite_utils/db.py#L307-L349

This makes it hard to tell if a database object is to an in-memory or a file-based database, which is sometimes useful to know.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/590/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1868713944,I_kwDOCGYnMM5vYk_Y,588,`table.get(column=value)` option for retrieving things not by their primary key,9599,open,0,,,1,2023-08-28T00:41:23Z,2023-08-28T00:41:54Z,,OWNER,,"This came up working on this feature:
- https://github.com/simonw/llm/pull/186

I have a table with this schema:
```sql
CREATE TABLE [collections] (
   [id] INTEGER PRIMARY KEY,
   [name] TEXT,
   [model] TEXT
);
CREATE UNIQUE INDEX [idx_collections_name]
    ON [collections] ([name]);
```
So the primary key is an integer (because it's going to have a huge number of rows foreign key related to it, and I don't want to store a larger text value thousands of times), but there is a unique constraint on the `name` - that would be the primary key column if not for all of those foreign keys.

Problem is, fetching the collection by name is actually pretty inconvenient.

Fetch by numeric ID:

```python
try:
    table[""collections""].get(1)
except NotFoundError:
    # It doesn't exist
```
Fetching by name:
```python
def get_collection(db, collection):
    rows = db[""collections""].rows_where(""name = ?"", [collection])
    try:
        return next(rows)
    except StopIteration:
        raise NotFoundError(""Collection not found: {}"".format(collection))
```
It would be neat if, for columns where we know that we should always get 0 or one result, we could do this instead:
```python
try:
    collection = table[""collections""].get(name=""entries"")
except NotFoundError:
    # It doesn't exist
```
The existing `.get()` method doesn't have any non-positional arguments, so using `**kwargs` like that should work:

https://github.com/simonw/sqlite-utils/blob/1260bdc7bfe31c36c272572c6389125f8de6ef71/sqlite_utils/db.py#L1495",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/588/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1784794489,I_kwDOCGYnMM5qYc15,562,Explore the intersection between sqlite-utils and dataclasses,9599,open,0,,,1,2023-07-02T19:23:08Z,2023-07-02T19:26:39Z,,OWNER,,"> Aside: this makes me think it might be cool if `sqlite-utils` had a way of working with dataclasses rather than just dicts, and knew how to create a SQLite table to match a dataclass and maybe how to code-generate dataclasses for a specific table schema (dynamically or even using code-generation that can be written to disk, for better editor integrations).

_Originally posted by @simonw in https://github.com/simonw/llm/issues/65#issuecomment-1616742529_
            ",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/562/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1733198948,I_kwDOCGYnMM5nToRk,555,Filter table by a large bunch of ids,10843208,open,0,,,1,2023-05-31T00:29:51Z,2023-06-14T22:01:57Z,,NONE,,"Hi! this might be a question related to both SQLite & sqlite-utils, and you might be more experienced with them.

I have a large bunch of ids, and I'm wondering which is the best way to query them in terms of performance, and simplicity if possible.

The naive approach would be something like `select * from table where rowid in (?, ?, ?...)` but that wouldn't scale if ids are >1k.

Another approach might be creating a temp table, or in-memory db table, insert all ids in that table and then join with the target one.

I failed to attach an in-memory db both using sqlite-utils, and plain sql's execute(), so my closest approach is something like,

```python
def filter_existing_video_ids(video_ids):
    db = get_db()  # contains a ""videos"" table
    db.execute(""CREATE TEMPORARY TABLE IF NOT EXISTS tmp (video_id TEXT NOT NULL PRIMARY KEY)"")
    db[""tmp""].insert_all([{""video_id"": video_id} for video_id in video_ids])
    for row in db[""tmp""].rows_where(""video_id not in (select video_id from videos)""):
        yield row[""video_id""]
    db[""tmp""].drop()
```

That kinda worked, I couldn't find an option in sqlite-utils's `create_table()` to tell it's a temporary table. Also, `tmp` table is not dropped finally, neither using `.drop()` despite being created with the keyword `TEMPORARY`. I believe it should be automatically dropped after connection/session ends though I read.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/555/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1740026046,I_kwDOCGYnMM5ntrC-,556,Support storing incrementally piped values,601708,open,0,,,1,2023-06-04T00:45:23Z,2023-06-04T01:21:15Z,,CONTRIBUTOR,,"I'm trying to use sqlite-utils to data generated incrementally. There are a few
aspects of this that I don't currently know how to handle. I would like an option
to apply writes incrementally, line-by-line as they are received. I would like an
option to echo incremental progress. And, it would be nice to have 

In particular, I'm using CoreLocationCLI -w -j to generate, newline-delimited JSON.

One variant of the command 

`stdbuf -oL CoreLocationCLI -w -j | pee 'sqlite-utils insert loc.db loc -' nl`

`pee`, from `moreutils`, is like `tee` but spawns and pipes to the processes
created by invoking each of its arguments, so, for gratuitous demonstration,
`pee 'sponge out.log' cat` would behave like `tee`.

It looks like I can get what I want with:
`stdbuf -oL CoreLocationCLI -w -j | while read line; do <<<""$line"" sqlite-utils insert loc.db loc -; echo ""$line""; done | nl`




",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/556/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1720096994,I_kwDOCGYnMM5mhpji,554,"`IndexError` when doing `.insert(..., pk='id')` after `insert_all`",1231935,open,0,,,1,2023-05-22T17:13:02Z,2023-05-22T17:18:33Z,,NONE,,"I believe this is related to https://github.com/simonw/sqlite-utils/issues/98.

When `pk` is specified by table A's `insert` call, it throws an index error if a different table has written a row with a higher rowid than exists in the first table. Here's a basic example:

```py
from sqlite_utils import Database


def test_pk_for_insert(fresh_db):
    user = {""id"": ""abc"", ""name"": ""david""}

    fresh_db[""users""].insert(user, pk=""id"")

    fresh_db[""comments""].insert_all(
        [
            {""id"": ""def"", ""text"": ""ok""},
            {""id"": ""ghi"", ""text"": ""great""},
        ],
    )

    fresh_db[""users""].insert(
        user,
        ignore=True,
        # BUG: when specifying pk on the second insert call 
        # db.py goes into a block it doesn't expect and we get the error
        pk=""id"",
    )


if __name__ == ""__main__"":
    db = Database(""bug.db"")
    if db[""users""].exists():
        raise ValueError(
            ""bug only shows on a new database - remove bug.db before running the script""
        )
    test_pk_for_insert(db)
```

The error is:

```py
  File ""/Users/david/projects/reddit-to-sqlite/.venv/lib/python3.11/site-packages/sqlite_utils/db.py"", line 2960, in insert_chunk
    row = list(self.rows_where(""rowid = ?"", [self.last_rowid]))[0]
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range
```

The issue is in this block: 

https://github.com/simonw/sqlite-utils/blob/2747257a3334d55e890b40ec58fada57ae8cfbfd/sqlite_utils/db.py#L2954-L2958

relevant locals are:

- `pk`: `'id'`
- `result.lastrowid`: `2`

What's most interesting is the comment `# self.last_rowid will be 0 if a ""INSERT OR IGNORE"" happened`, which doesn't seem to be the case here. ",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/554/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1700936245,I_kwDOCGYnMM5lYjo1,542,Remove `skip_false=True` and `--no-skip-false` in `sqlite-utils` 4.0,9599,open,0,,9374594,1,2023-05-08T21:04:28Z,2023-05-08T21:07:41Z,,OWNER,,"Following:
- #527

The only reason I didn't remove fix this mis-feature entirely is that it represents a backwards incompatible change. I'll make that change in 4.0.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/542/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1700840265,I_kwDOCGYnMM5lYMNJ,541,Get tests to pass with `pytest -Werror`,9599,open,0,,,1,2023-05-08T19:57:23Z,2023-05-08T19:59:35Z,,OWNER,,"Inspired by:
- #534",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/541/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
907795562,MDU6SXNzdWU5MDc3OTU1NjI=,265,Using enable_fts before search term,36287,open,0,,,1,2021-06-01T01:43:34Z,2023-04-01T17:27:18Z,,NONE,,"Many thanks for the sqlite-utils suite of utilities. Has made my life much much easier. 
I used this to create a table and enable FTS. All works fine. The datasette utility detects FTS and shows a text box. Searching for a term using that interface works well.

However, when I start to use features by following https://www.sqlite.org/fts5.html section **""3. Full-text Query Syntax""** I seem to run into issues that I suspect is due to `escape_fts` wrapper function.

As an example, if i search for the term `""^குகை"" `on the text box in datasette it produces 140 results. However, when i tweak the query produced by datasette to not use ""escape_fts"" it produces 5 results.

Similarly, when I try to restrict the search to a single column in FTS using a spec like `{title : ^குகை}` it returns no rows. The same thing pulls results when used without `escape_fts`. The text in the table is in Tamil language and the search term is a Tamil word.

```
   ...
    where
      posts_fts match escape_fts(:search)
```
vs

```
    ...
    where
      posts_fts match (:search)
```

Any ideas why? How can I get the benefits of both escaping as well as utilizing different facets of providing / controlling search terms? Thanks.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/265/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1560651350,I_kwDOCGYnMM5dBaZW,523,Feature request: trim all leading and trailing white space for all columns for all tables in a database,536941,open,0,,,1,2023-01-28T02:40:10Z,2023-01-28T02:41:14Z,,CONTRIBUTOR,,"It's pretty common that i need to trim leading or trailing white space from lots of columns in a database a part of an initial ETL.

I use the following recipe a lot, and it would be great to include this functionality into sqlite-utils

`trimify.sql`
```sql
select 'select group_concat(''update [' || name || '] set ['' || name || ''] = trim(['' || name || ''])'', '';
'') || '';
'' as sql_to_run from pragma_table_info('''||name||''');' from sqlite_schema;
```

then something like:

```bash
	sqlite3 example.db < scripts/trimify.sql > table_trim.sql && \
             sqlite3 $example.db < table_trim.sql > trim.sql && \
             sqlite3 $example.db < trim.sql
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/523/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1386530156,I_kwDOCGYnMM5SpMVs,492,Idea: ability to pass extra variables to `--convert` scripts,9599,open,0,,,1,2022-09-26T18:30:45Z,2022-09-26T18:33:19Z,,OWNER,,"Got this idea from this example in https://jeqo.github.io/notes/2022-09-24-ingest-logs-sqlite/

```bash
sqlite-utils insert /tmp/kafka-logs.db logs server.log.2022-09-24-21 --text --convert ""
import re
r = re.compile(r'^\[(?P<datetime>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3})\] (?P<level>\w+) (?P<log>(.+(\n(?\!\[).+|)+))', re.MULTILINE)
def convert(text):
    rows = [m.groupdict() for m in r.finditer(text)]
    for row in rows:
        row.update({'server': 'localhost'})
        row.update({'component': 'broker'})
    return rows
""
```
And the accompanying note:

> The `row.update` allows to label rows as I’m planning to ingest logs from different hosts and potentially different components.

This made me think: it might be neat if you could inject additional variable values into that script with extra command-line options, to make this kind of reuse easier. Something like this:

```bash
sqlite-utils insert /tmp/kafka-logs.db logs server.log.2022-09-24-21 --text --convert ""
import re
r = re.compile(r'^\[(?P<datetime>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3})\] (?P<level>\w+) (?P<log>(.+(\n(?\!\[).+|)+))', re.MULTILINE)
def convert(text):
    rows = [m.groupdict() for m in r.finditer(text)]
    for row in rows:
        row.update({'server': server})
        row.update({'component': component})
    return rows
"" --var server ""localhost"" --var component ""broker""
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/492/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1353481513,I_kwDOCGYnMM5QrH0p,478,`sqlite-utils tables data.db table1 table2`,9599,open,0,,,1,2022-08-28T22:05:53Z,2022-08-28T22:22:35Z,,OWNER,,"The `sqlite-utils tables` command currently lists all tables.

If you have a huge table in there then running it with `--counts` can get expensive, because of the huge table.

Would be useful if it could accept an optional list of tables that it should execute against, as an alternative to the default of all of them.

This should be a backwards compatible change. Current design is:  https://sqlite-utils.datasette.io/en/stable/cli-reference.html#tables

```
Usage: sqlite-utils tables [OPTIONS] PATH

  List the tables in the database

  Example:

      sqlite-utils tables trees.db
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/478/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1326349129,I_kwDOCGYnMM5PDntJ,461,Consider including animated SVG console demos,9599,open,0,,,1,2022-08-02T20:10:04Z,2022-08-02T20:12:14Z,,OWNER,,"I recorded this one using https://github.com/nbedos/termtosvg - with `pipx install termtosvg` and then `termtosvg` - execute demo - `exit` to save.

![sqlite-utils-insert-json](https://user-images.githubusercontent.com/9599/182464206-f4976af4-eda8-4020-8257-4ada1867fb44.svg)

```json
[
  {
    ""id"": 1,
    ""name"": ""Catimus""
  },
  {
    ""id"": 2,
    ""name"": ""Feliopia""
  }
]
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/461/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1215216249,I_kwDOCGYnMM5Ibrp5,428,Research adding support for savepoints,9599,open,0,,,1,2022-04-26T01:04:01Z,2022-04-26T01:05:29Z,,OWNER,,"https://www.sqlite.org/lang_savepoint.html

Savepoints are like regular transactions except they have names and can be nested.

Would there be any value in adding support to them to `sqlite-utils`, potentially as some kind of context manager? Something like this:
```python
with db.savepoint(""name""):
    # do stuff
    with db.savepoint(""name2""):
        # do more stuff
        raise Release # Rolls back to before ""name2"" savepoint
```
I've never used this feature so I'm not comfortable adding anything like this without a bunch of extra research.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/428/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1181236173,I_kwDOCGYnMM5GaDvN,422,Reconsider not running convert functions against null values,9599,open,0,,,1,2022-03-25T20:22:40Z,2022-03-25T20:23:21Z,,OWNER,,"I just got caught out by the fact that `None` values are not processed by the `.convert()` mechanism https://github.com/simonw/sqlite-utils/blob/0b7b80bd40fe86e4d66a04c9f607d94991c45c0b/sqlite_utils/db.py#L2504-L2510

I had run this code while working on #420 and I wasn't sure why it didn't work:

```
$ sqlite-utils add-column content.db articles score float
$ sqlite-utils convert content.db articles score '
import random
random.seed(10)

def convert(value):
    global random
    return random.random()
'
```
The reason it didn't work is that the newly added `score` column was full of `null` values.

I fixed it by doing this instead:

    $ sqlite-utils add-column content.db articles score float --not-null-default 1.0

But this indicates to me that the design of `convert()` here may be incorrect.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/422/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
688351054,MDU6SXNzdWU2ODgzNTEwNTQ=,140,Idea: insert-files mechanism for adding extra columns with fixed values,9599,open,0,,,1,2020-08-28T20:57:36Z,2022-03-20T19:45:45Z,,OWNER,,"Say for example you want to populate a `file_type` column with the value `gif`. That could work like this:

```
sqlite-utils insert-files gifs.db images *.gif \
    -c path -c md5 -c last_modified:mtime \
    -c file_type:text:gif --pk=path
```
So a column defined as a `text` column with a value that follows a second colon.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/140/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1122446693,I_kwDOCGYnMM5C5y1l,394,Test against Python 3.11-dev,9599,open,0,,,1,2022-02-02T22:21:03Z,2022-02-03T21:06:35Z,,OWNER,,"Same as:
- https://github.com/simonw/datasette/issues/1621",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/394/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
836829560,MDU6SXNzdWU4MzY4Mjk1NjA=,248,support for Apache Arrow / parquet files I/O,649467,open,0,,,1,2021-03-20T14:59:30Z,2021-10-28T23:46:48Z,,NONE,,"I just started looking at Apache Arrow using pyarrow for import and export of tabular datasets, and it looks quite compelling. It might be worth looking at for sqlite-utils and/or datasette.

As a test, I took a random jsonl data dump of a dataset I have with floats, strings, and ints and converted it to arrow's parquet format using the naive `pyarrow.parquet.write_file()` command, which has automatic type inferrence. It compressed down to 7% of the original size. Conversion of a 26MB JSON file and serializing it to parquet was eyeblink instantaneous. Parquet files are portable and can be directly imported into pandas and other analytics software. 

The only hangup is the automatic type inference of the naive reader. It's great for general laziness and for parsing JSON columns (it correctly interpreted a table of mine with a JSON array). However, I did get an exception for a string column where most entries looked integer-like but had a couple values that weren't -- the reader tried to coerce all of them for some reason, even though the JSON type is string. Since the writer optionally takes a schema, it shouldn't be too hard to grab the sqlite header types. With some additional hinting, you might get datetime columns and JSON, which are native Arrow types. 

Somewhat tangentially, someone even wrote an sqlite vfs extension for Parquet: https://cldellow.com/2018/06/22/sqlite-parquet-vtable.html

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