libpg_query
Visual Studio Code
libpg_query | Visual Studio Code | |
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13 | 2,844 | |
1,068 | 158,365 | |
1.3% | 0.7% | |
8.8 | 10.0 | |
6 days ago | 4 days ago | |
C | TypeScript | |
BSD 3-clause "New" or "Revised" License | MIT License |
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libpg_query
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Transpile Any SQL to PostgreSQL Dialect
This in combination with [pg_query](https://github.com/pganalyze/libpg_query) could be a very powerful combination that allows writing generic static analyzers.
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Postgres: The Next Generation
It's true that the core PG code isn't written in a modular way that's friendly to integration piecemeal in other projects (outside of libpq).
For THIS PARTICULAR case, the pganalyze team has actually extracted out the parser of PG for including in your own projects:
https://github.com/pganalyze/libpg_query
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SQLedge: Replicate Postgres to SQLite on the Edge
#. SQLite WAL mode
From https://www.sqlite.org/isolation.html https://news.ycombinator.com/item?id=32247085 :
> [sqlite] WAL mode permits simultaneous readers and writers. It can do this because changes do not overwrite the original database file, but rather go into the separate write-ahead log file. That means that readers can continue to read the old, original, unaltered content from the original database file at the same time that the writer is appending to the write-ahead log
#. superfly/litefs: aFUSE-based file system for replicating SQLite https://github.com/superfly/litefs
#. sqldiff: https://www.sqlite.org/sqldiff.html https://news.ycombinator.com/item?id=31265005
#. dolthub/dolt: https://github.com/dolthub/dolt
> Dolt can be set up as a replica of your existing MySQL or MariaDB database using standard MySQL binlog replication. Every write becomes a Dolt commit. This is a great way to get the version control benefits of Dolt and keep an existing MySQL or MariaDB database.
#. pganalyze/libpg_query: https://github.com/pganalyze/libpg_query :
> C library for accessing the PostgreSQL parser outside of the server environment
#. Ibis + Substrait [ + DuckDB ]
> ibis strives to provide a consistent interface for interacting with a multitude of different analytical execution engines, most of which (but not all) speak some dialect of SQL.
> Today, Ibis accomplishes this with a lot of help from `sqlalchemy` and `sqlglot` to handle differences in dialect, or we interact directly with available Python bindings (for instance with the pandas, datafusion, and polars backends).
> [...] `Substrait` is a new cross-language serialization format for communicating (among other things) query plans. It's still in its early days, but there is already nascent support for Substrait in Apache Arrow, DuckDB, and Velox.
#. benbjohnson/postlite: https://github.com/benbjohnson/postlite
> postlite is a network proxy to allow access to remote SQLite databases over the Postgres wire protocol. This allows GUI tools to be used on remote SQLite databases which can make administration easier.
> The proxy works by translating Postgres frontend wire messages into SQLite transactions and converting results back into Postgres response wire messages. Many Postgres clients also inspect the pg_catalog to determine system information so Postlite mirrors this catalog by using an attached in-memory database with virtual tables. The proxy also performs minor rewriting on these system queries to convert them to usable SQLite syntax.
> Note: This software is in alpha. Please report bugs. Postlite doesn't alter your database unless you issue INSERT, UPDATE, DELETE commands so it's probably safe. If anything, the Postlite process may die but it shouldn't affect your database.
#. > "Hosting SQLite Databases on GitHub Pages" (2021) re: sql.js-httpvfs, DuckDB https://news.ycombinator.com/item?id=28021766
#. awesome-db-tools https://github.com/mgramin/awesome-db-tools
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Show HN: Postgres Language Server
Generally I agree that this would be great to have, and Postgres does have a set of libraries it already maintains as part of the main source tree (i.e. libpq, etc), and there is a shared set of code between the backend and the "frontend" (https://github.com/postgres/postgres/tree/master/src/common). So theoretically you could imagine the parser moving into that shared code portion, sharing code but not necessarily requiring linking to a library from the backend.
However, the challenge from what I've understood from past conversations with some folks working on Postgres core is that the parser is currently heavily tied into the backend - note the parser isn't just the scan.l/gram.y file, but also the raw parse node structs that it outputs. You can see how many files we pull in from the main tree that are prefixed with "src_backend": https://github.com/pganalyze/libpg_query/tree/15-latest/src/...
Further, there isn't a canonical way to output node trees into a text format today in core, besides the rather hard to work with output of debug_print_parse - there have been discussions on -hackers to potentially utilize JSON here, which may make this a bit easier. Note that in libpg_query we currently use Protobuf (but used to use JSON), which does have the benefit of getting auto-generated structs in the language bindings - but Protobuf is not used in core Postgres at all today.
All in all, I think there is some upstream interest, but its not clear that this is a good idea from a maintainability perspective.
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Show HN: PgMagic – a Mac Postgres client that lets you query in natural language
Neat project!
Just in case its helpful to you, I (together with colleagues at pganalyze) maintain pg_query, which packages the Postgres parser as a library: https://github.com/pganalyze/libpg_query
Might be useful to include in your product as a way to run a quick syntax check on the query output by the LLM, without actually connecting to the database and causing an error in the logs.
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Show HN: PRQL – A Proposal for a Better SQL
I like that everyone is trying to make something like SQL that reads more naturally to them. More alternatives is good! SQL is a widely accepted standard, and has strictly defined and super broadly accepted semantics.
As someone who has written quite a few half-baked-for-general-use but fit-for-purpose SQL generator utilities over the years, I'll suggest that if you intend for a novel syntax to be a general SQL replacement then being isomorphic to SQL would massively increase usefulness and uptake:
1. novel syntax to SQL; check! Now novel syntax works with all the databases!
2. any valid SQL to novel syntax; a bit harder, but I'd start by using a SQL parser like https://github.com/pganalyze/libpg_query and translating the resulting AST into the novel syntax.
3. novel syntax to SQL back to novel syntax is idempotent; a nice side effect is a validator/formatter for "novel syntax"
4. SQL to novel syntax back to SQL is idempotent; a nice side effect is a validator/formatter for SQL, which would be awesome. (See also https://go.dev/blog/gofmt, which is where I learned this "round trip as formatter" trick.)
I don't mean for this to sound negative, and I know that 2, 3, and 4 are kind of hard. Thank you for building prql!
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Go PL/SQL parser using ANTLRv4
I feel like https://github.com/pganalyze/libpg_query should be the default choice for anything that needs a SQL parser. PL/SQL parsing is included there.
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Postguard: CORS-like permissions for Postgres
Rules are enforced by parsing statements into a syntax tree and checking all of the nodes against the provided rules. Statement parsing is done through bindings to the excellent libpg_query library, which uses Postgres's own statement parser to generate the syntax tree.
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Open Source SQL Parsers
libpg_query extracts the parser (written in C) from the postgres project and packages it as a stand-alone library. This library is wrapped in other languages by other projects like:
Visual Studio Code
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How to Add Firebase Authentication To Your NodeJS App
A code editor (VS Code is my go-to IDE), but feel free to use any code editor you're comfortable with.
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Create a Chat App With Node.js
First, grab your favorite command-line tool, Terminal or Warp, and a code editor, preferably VS Code and let’s begin.
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Asynchronous Programming in C#
C# is very good as a language, have developed in it for 5+ years. The problem is the gap between what MSFT promises to management and actually delivers to developers. You really really need to fully read the fine print, think of the omissions in documentation and implement a proof-of-concept that almost implements the full solution to find out the hidden gotchas.
For example, even probably their best product VS Code only got reasonable multiple screens support last year: https://github.com/microsoft/vscode/issues/10121#issuecommen...
And then, on the other end of the spectrum, you have Teams.
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8 Essential VS Code Extensions [2024]
Hey fellow amazing developers, we got you Essential VS Code Extensions for 2024 (these are especially important for web developers) recommended by our developers at evotik, we wont talk about ESlint nor Prettier which all of you already know.
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scrape-yahoo-finance
Visual Studio Code (VS Code): Developed by Microsoft, VS Code is a lightweight yet powerful IDE with extensive support for Python development through extensions. It offers features like IntelliSense, debugging, and built-in Git integration.
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XDebug with WP-Setup
In VSCode for example this can be easily done by adding the following .vscode/launch.json file:
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I can't stand using VSCode so I wrote my own (it wasn't easy)
I had a near-identical experience. I looked into switching in 2019 and ran into this 2016 bug which was a showstopper for me. Fixed it myself, grand total 4 line diff. https://github.com/microsoft/vscode/issues/10643
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Employee Management System using Python.
When working in Visual Studio Code (VS Code), always create a new Python file for your project.
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A deep dive into progressive web apps (PWA)
Code Editor: Choose a code editor like Visual Studio Code that offers good support for web technologies and extensions for PWA development.
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Build a Music Player with Python
When working in Visual Studio Code (VS Code), create a new Python file for our music player project. It's helpful to have separate files for different parts of your project.
What are some alternatives?
ANTLR - ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
thonny - Python IDE for beginners
JSqlParser - JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern
reactide - Reactide is the first dedicated IDE for React web application development.
prql - PRQL is a modern language for transforming data — a simple, powerful, pipelined SQL replacement
Spyder - Official repository for Spyder - The Scientific Python Development Environment
pglast - PostgreSQL Languages AST and statements prettifier: master branch covers PG10, v2 branch covers PG12, v3 covers PG13, v4 covers PG14, v5 covers PG15, v6 covers PG16
doom-emacs - An Emacs framework for the stubborn martian hacker [Moved to: https://github.com/doomemacs/doomemacs]
pg_parse - PostgreSQL parser for Rust that uses the actual PostgreSQL server source to parse SQL queries and return the internal PostgreSQL parse tree.
KDevelop - Cross-platform IDE for C, C++, Python, QML/JavaScript and PHP
pg_query - Ruby extension to parse, deparse and normalize SQL queries using the PostgreSQL query parser
vscodium - binary releases of VS Code without MS branding/telemetry/licensing