rust-postgres VS sqlx

For C there should be good options.

For Rust it doesn't appear that well-supported.

A very simple approach is to poll for changes using `pg_logical_slot_get_changes()` - that should work with any driver. That's what I used for my initial experimentation, before switching over to the streaming replication protocol for better performance.

The streaming replication protocol is not that complicated, but currently you'll have to handle some of the low-level protocol yourself, or work with some very experimental implementations. There's a project to help get you started at [1], and some more discussion at [2].

For the logical decoder, wal2json is quite nice to experiment with, but I've found pgoutput is not that complicated and gives you something closer to the raw data.

[1]: https://github.com/seddonm1/logicaldecoding/

[2]: https://github.com/sfackler/rust-postgres/issues/116

This is a bit of a rant so please bear with me. I wrote a small utility program a long time ago that used this version of the postgres crate

En este post aprendermos a usar Rust, Tonic y la crate gRPC, y implementaremos un CRUD con Postgresql database.

I can understand that this can be frustrating and I know that the situation there is not ideal for diesel. There are certainly things to improve there by either providing a bundling support which builds the native library as part of the normal build process or by implementing a pure rust connection implementation. Both is possible with diesel, but requires some work. At least the pure rust connection implementation is something that can be provided by a third party crate now with upcoming diesel 2.0 release. If you are interested in that checkout this and this issue. As for the bundling support: This requires changes in the mysqlclient-sys and pq-sys crates. Again help there is welcome. In the end it makes me sad that some people have repeating decided that a solution to this problem is to write just another crate instead of helping to fix these issues. This just results in everyone have more work to do, as there are now two non-perfect solutions instead of having one slightly improved solution.

We created this little library to have a fully native type for Postgres Numerics with the rust-postgres (https://github.com/sfackler/rust-postgres) library.

The problem with a crate like postgres is that you have to define the types of the query at compile-time. And if you use the simple query protocol in postgres, you just get a bunch of strings, i.e. no proper typing at all. However, for maximal flexibility arbitrary queries should work in pigeon, without knowing the database schema.

Some nifty things about usual: - It's a generic wrapper over any SQL "row" object. The first implementation that's provided is for tokio-postgres, but traits are available to implement over whatever you'd like. - It provides static typing for partial queries. That is, it supports fetching a subset of fields from a row and makes a unique type for the return value. This gives you some neat-o type safety like this:

In this post, we will learn how to use Rust Tonic gRPC crate. We will learn how to implement CRUD with Postgresql database.

(see: https://github.com/sfackler/rust-postgres/blob/e15c9b1415f69821799f1370246581c1600a6196/postgres-protocol/src/types/mod.rs#L137)

I tend to default to as few as possible, which is why when working with SQL and Rust, I almost always reach for SQLx. Setting up SQLx with AWS DSQL requires using the v4 Signature signing of my credentials as fetched from my AWS configuration. I do this work in my main function so that I can reuse the Postgres Pool in my handler without having to establish this connection outside of the Cold Start initializing cycle. That setup is reflected in the below code.

This looks like a less ergonomic version of Rust's SQLx (https://github.com/launchbadge/sqlx) but a more robust version of TypeScript's sqlx-ts (https://jasonshin.github.io/sqlx-ts/). Sqlc seems to copy the latter's unfortunate lack of inline SQL statements. Still, seems promising.

SQLx seems to do some form of this. though what you're suggesting may remove the build time dependency on "connecting" to a SQLite database.

"SQLx supports compile-time checked queries. It does not, however, do this by providing a Rust API or DSL (domain-specific language) for building queries. Instead, it provides macros that take regular SQL as input and ensure that it is valid for your database. The way this works is that SQLx connects to your development DB at compile time to have the database itself verify (and return some info on) your SQL queries."

https://github.com/launchbadge/sqlx

For PostgreSQL, the most relevent part of the code is here. With this in mind I changed some things around to rely on schemas instead of databases and even simplified some parts of the implementation as this was always meant to be for internal use only..

What exactly are you missing? I haven't really written "boring corporate backend stuff" in a few years but something like sqlx provides everything I've ever needed there.

Badges are the little rectangles you typically see at the top of a crate's README: https://github.com/launchbadge/sqlx/blob/main/README.md

SQLX has entered the chat [1].

[1] https://github.com/launchbadge/sqlx

Database : SqLite (using sqlx).

The current (well, removed) MSSQL sqlx driver also doesn't support encrypted connections (https://github.com/launchbadge/sqlx/issues/1552), so it might work locally on an unnamed instance but not over the network until they add in the newer driver (which will be closed source but for an OSS project you should be able to request a free license I think)