languages-that-compile-to-sql
cornucopia
languages-that-compile-to-sql | cornucopia | |
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1 | 20 | |
48 | 713 | |
- | 11.9% | |
10.0 | 4.2 | |
almost 2 years ago | 26 days ago | |
Rust | ||
MIT License | GNU General Public License v3.0 or later |
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languages-that-compile-to-sql
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Ask HN: ORM or Native SQL?
> Therefore, you can refactor your DB without changing app code.
Indeed, that's incredible! I tend to think that the actual layout of db tables a low level concern that is mainly driven by query performance and simplicity.
> - Type mapping is surprisingly hard to get right, especially with composite types and arrays and custom type converters. For example, a query might return multiple jsonb columns but the app code wants to parse them into different structs.
In Rust there's serde for converting json into structs (or enums if the shape of the json is complicated enough). Doesn't Go have a similar serialization/deserialization library?
> - Dynamic queries don't work with prepared statements. Prepared statements only support values, not identifiers or scalar SQL sub-queries, so the codegen layer needs a mechanism to template SQL. I haven't built this out yet but would like to.
In this case, what about stored procedures?
But, generally, instead of a template language for SQL, I would like to have a real compile-to-SQL higher level language, that could also do dynamic queries. The trouble with templating is that dynamic queries are hard to do in a type-safe manner, and it's hard to prevent generating invalid SQL when you have a bad template substitution (and then you get bad error messages from the db). There's a few languages like this do this https://github.com/ajnsit/languages-that-compile-to-sql but none fits the bill
cornucopia
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We built our customer data warehouse all on Postgres
There are multiple queries each separated by ; and on top of each query, there's a comment giving a name to the query (it's more like a header)
I think the only thing that would require specific support in postgres_lsp is using the :parameter_name syntax for prepared statements [1] (in vanilla Postgres would be something like $1 or $2, but in Cornucopia it is named to aid readability). But, if postgres_lsp is forgiging enough to not choke on that, then it seems completely fit for this use case.
[0] https://github.com/cornucopia-rs/cornucopia
[1] https://cornucopia-rs.netlify.app/book/writing_queries/writi...
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Is ORM still an anti-pattern?
Some examples for anyone else reading:
https://github.com/kyleconroy/sqlc
https://github.com/cornucopia-rs/cornucopia
This is my preferred method of interacting with databases now.
Very flexible.
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What ORM do you use?
I like Cornucopia. It’s a SQL-first approach, so I don’t have to worry about an ORM generating pathological queries. It’s also basically zero cost compared to directly using rust-postgres and supports both sync and async. I also like that my SQL queries end up separate from my Rust code, so it’s easy to update all the relevant queries when the schema changes.
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What is the recommended way to implement session authorization?
Also, I moved away from SQLx due to slow compile times and now use https://github.com/cornucopia-rs/cornucopia
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Oops, You Wrote a Database
While we're on the subject of ORM's I really like the https://github.com/cornucopia-rs/cornucopia way of doing things.
Basically write SQL in a file and code generate a function that runs the SQL for you and puts it into a struct (this one is for rust)
I think there's a library to do the same thing with typescript.
For me, the best way to talk to the database is with SQL and I don't have to learn an ORMs way of doing it.
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Thoughts about switching from sqlx to tokio_postgres?
You can take a look at https://github.com/cornucopia-rs/cornucopia which is a thin codegen layer on top of tokio-postgres for ease of use.
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Ormlite: An ORM in Rust for developers that love SQL
I think we have that https://github.com/cornucopia-rs/cornucopia
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Ask HN: ORM or Native SQL?
The best solution I've ever seen is this Rust library https://github.com/cornucopia-rs/cornucopia
You write plain SQL for you schema (just a schema.sql is enough) and plain SQL functions for your queries. Then it generates Rust types and Rust functions from from that. If you don't use Rust, maybe there's a library like that for your favorite language.
Optionally, pair it with https://github.com/bikeshedder/tusker or https://github.com/blainehansen/postgres_migrator (both are based off https://github.com/djrobstep/migra) to generate migrations by diffing your schema.sql files, and https://github.com/rust-db/refinery to perform those migrations.
Now, if you have simple crud needs, you should probably use https://postgrest.org/en/stable/ and not an ORM. There are packages like https://www.npmjs.com/package/@supabase/postgrest-js (for JS / typescript) and probably for other languages too.
If you insist on an ORM, the best of the bunch is prisma https://www.prisma.io/ - outside of the typescript/javascript ecosystem it has ports for some other languages (with varying degrees of completion), the one I know about is the Rust one https://prisma.brendonovich.dev/introduction
- Anything like sqlc for Rust?
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What features would you consider missing/nice to haves for backend web development in Rust?
Does Cornucopia satisfy this requirement?
What are some alternatives?
postgres_migrator - A postgres migration generator and runner that uses raw declarative sql.
sqlx - 🧰 The Rust SQL Toolkit. An async, pure Rust SQL crate featuring compile-time checked queries without a DSL. Supports PostgreSQL, MySQL, and SQLite.
refinery - Powerful SQL migration toolkit for Rust.
metrics
tusker - PostgreSQL migration management tool
rbatis - Rust Compile Time ORM robustness,async, pure Rust Dynamic SQL
safeql - Composable / async / functional / type-safe / parallel-pipelined queries and relations without SQL injection or N+1s.
diesel_async - Diesel async connection implementation
Prisma - Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
bb8 - Full-featured async (tokio-based) postgres connection pool (like r2d2)
sqlc - Generate type-safe code from SQL
typed-session-axum - Typed-session as axum middleware