sql.js-httpvfs
apsw
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sql.js-httpvfs | apsw | |
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15 | 3 | |
3,233 | 694 | |
- | - | |
1.5 | 9.6 | |
about 1 year ago | 5 days ago | |
TypeScript | Python | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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sql.js-httpvfs
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A future for SQL on the web (2021)
I couldn't find do these wrappers support read-only SQLite databases with HTTP range requests, like in this famous post [1]. Phiresky's wrapper supports it, but it seems to be rebuilding the whole sql.js [2], I'd rather have it as VFS on top of sqlite.org's own WASM module. I like the idea of HTTP range requests, but I don't want to run a fork, that will be unmaintained in few years.
[1]: https://news.ycombinator.com/item?id=27016630
[2]: https://github.com/phiresky/sql.js-httpvfs
- Cloud Backed SQLite
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Transmission 4.0.0 beta 1 is out
Oh that’s an interesting idea. I saw someone built SQLite over HTTP with the Range header: https://phiresky.github.io/blog/2021/hosting-sqlite-database...
So presumably in a similar manner as https://github.com/phiresky/sql.js-httpvfs you could map SQLite pages to leaf torrents too and get the chunking you are looking for.
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netgrep - An experimental porting of ripgrep on WASM over the HTTP protocol.
But ripgrep has to read the whole file; if your intended use case is searching a blog, I'd recommend using something which makes an index, so you don't need to download everything. For example, sql.js-httpvfs is SQLite ported to wasm, with the DB file read over HTTP. If you use FTS to make an index, it works astonishingly well for text search.
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Datasette Lite: a server-side Python web application running in a browser
How close is Python SQLite and Datasette Lite to accessing a hosted SQL database using HTTP range requests as can be done in sql.js like https://github.com/phiresky/sql.js-httpvfs?
I put together a Pyodide-based web app where users need a few indexed queries from a 600mb SQLite database but it isn't very practical for them to download the whole thing into the browser.
https://observablehq.com/@thadk/life
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Ws4sqlite: Query SQLite via HTTP
You can also access sqlite databases directly from an http server that supports range requests (like s3). There are a bunch of implementations of this in different languages including Go[0] and Javascript[1].
[0]: https://github.com/psanford/sqlite3vfshttp
[1]: https://github.com/phiresky/sql.js-httpvfs
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Static torrent website with peer-to-peer queries over BitTorrent on 2M records
Thanks to SQLite VFS abstraction, it is possible to implement your own file system on which SQLite parks data and structures. Inspired by Phiresky's sql.js-httpvfs which uses HTTP Range requests to lazy load blocks of storage from a static web server, I changed few lines of code to point the VFS read() calls to a database seeded by peers as a torrent. A 300 MiB db with 2 million records can be queried from seeders for full text searches in less than 2 MiB traffic with the BitTorrent protocol, all inside the browser, in a static website.
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WebVM: Server-less x86 virtual machines in the browser
Hosting SQLite Databases on GitHub Pages" https://news.ycombinator.com/item?id=28021766 : DuckDB can query [and page] Parquet from GitHub, sql.js-httpvfs, sqltorrent, File System Access API (Chrome only so far; IDK about resource quotas and multi-GB datasets), serverless search with WASM workers
https://github.com/phiresky/sql.js-httpvfs :
> sql.js is a light wrapper around SQLite compiled with EMScripten for use in the browser (client-side).
> This repo is a fork of and wrapper around sql.js to provide a read-only HTTP-Range-request based virtual file system for SQLite. It allows hosting an SQLite database on a static file hoster and querying that database from the browser without fully downloading it.
> The virtual file system is an emscripten filesystem with some "smart" logic to accelerate fetching with virtual read heads that speed up when sequential data is fetched. It could also be useful to other applications, the code is in lazyFile.ts. It might also be useful to implement this lazy fetching as an SQLite VFS [*] since then SQLite could be compiled with e.g. WASI SDK without relying on all the emscripten OS emulation.
- Show HN: Link-Archive.org
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Database-Less Torrent Website
It doesn't have to be range requests, you could split the file instead of depending on the range requests. Essentially it's the same as the chunking instructions for hosters who have a maximum file size as is demonstrated here: https://github.com/phiresky/sql.js-httpvfs/blob/master/creat...
apsw
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SQLite version of SQL Server "linkedin server", or another way to query another db from within SQLite?
You can do this with virtual tables, but you'd have to implement the code for the vtab yourself. If you know Python, the APSW SQLite driver supports vtabs. The default one that comes with most Python distros does not
- Hosting SQLite databases on GitHub Pages (or any static file hoster)
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What's New in SQLite 3.35
There is also this, which seems pretty good: https://github.com/rogerbinns/apsw
(haven't tried it yet)
What are some alternatives?
alasql - AlaSQL.js - JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel.
SuperSQLite - A supercharged SQLite library for Python
datasette - An open source multi-tool for exploring and publishing data
dataset - Easy-to-use data handling for SQL data stores with support for implicit table creation, bulk loading, and transactions.
sqlite3vfshttp - Go sqlite3 http vfs: query sqlite databases over http with range headers
pymssql - Official home for the pymssql source code.
duckdb - DuckDB is an in-process SQL OLAP Database Management System
asyncpg - A fast PostgreSQL Database Client Library for Python/asyncio.
wp-sqlite-db - A single file drop-in for using a SQLite database with WordPress. Based on the original SQLite Integration plugin.
awesome-mysql - A curated list of awesome MySQL software, libraries, tools and resources
sqltorrent
clickhouse-driver - ClickHouse Python Driver with native interface support