moja
sqlc
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moja
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Sketch of a Post-ORM
I want sum types.
I want a statically-typed way of constructing composable queries that follow SQL rather than reinvent a different thing. It doesn't have to be the same syntax but it has to be the same structuring.
I started writing one[0] and stopped before doing all the boilerplate code generation, having moved on from the JVM ecosystem for the time being. One thing it does is treat most things like sets so we don't end up with N+1 queries. Another trick it uses is collapsing constant expressions via an expression evaluation library[1].
[0] https://github.com/karmakaze/safeql
[1] https://github.com/karmakaze/moja
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Ask HN: Tools you have built for yourself?
Over the years, I've written many apps and utilities for myself or others (that didn't end up get used). These are the interesting ones I remember. Many not quite complete/usable. Other than hackerer.news none of them are 'up' and running. Some have and others haven't been published as opensource.
- https://hackerer.news HN viewer (source[0]): I use daily so I can see today's top stories in reverse chronological order with mainstream topics sorted to the bottom.
- qwickly[1] keyboard layout: I use all the time as an easier to learn and more comfortable to type than Colemak/Tarmak
- safeql[2]: Java type-safe SQL expression composer that reduces constant expressions and eliminates N+1 queries loading associations by always operating on set relation or array of models.
- moja[3]: Composable computation pipelines for Java: Async, Lazy, Option, Try, Result, Multi (List), Stated, Reader, Logger, Writer.
- gitgrep.com[4] Opensource SaaS version of etsy/houndd (now called hound-search).
- statuspages.me: Status page aggregator with dynamic javascript for scraping each source using selector expressions.
- movies to watch aggregator: with links to sources to watch. It was hard then to get 3rd party deep links into streaming sites so included some torrent links. Got a DMCA phone call, so took it down. Combined thumbnails, summaries, actors(?), imdb ratings, links.
- java2cpp: Translate a moderately sized java app with test suite to c++, not 100% required final manual fixups.
- swift2java (or maybe it was java2swift, it's fuzzy now): translate Swift to Java obviously, using ANTLR4. Not 100% required final manual fixups.
- gui2log: to make an ASCII rendition of on-screen GUI widgets into an application log file when form submitted, so users couldn't complain that they saw X, but got Y.
- some basic stats/ML algorithms: k-nearest neighbour, RNN back-propagation, etc?
- Java in-memory DB: Small SQL-like memory tables with indexing/searching.
- wwwsqldesigner: This exists as opensource and I extended it to infer foreign key relationships based on naming conventions used in a MySQL schema. It was great for zooming around a large ERD.
- tracelog: combination of microservices parent/child span logging and generated high level events shown as a sequence diagram. Integrated with Loggly for full/verbose logs of selected high-level events.
- pcl2bmp downscaler: Reduce high resolution HP LaserJet (PCL5) printed to file to lower resolution bitmap pages for screen display (before retina DPI was common). It aimed to shrink same-color areas and preserve black/white transitions while reducing.
[0] https://gitlab.com/karmakaze/hackerer-news
[1] https://github.com/qwickly-org/Qwickly
[2] https://github.com/karmakaze/safeql
[3] https://github.com/karmakaze/moja
[4] https://github.com/gitgrep-com/gitgrep
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Ask HN: What is the most impactful thing you've ever built?
Sure, SafeQL[0] SQL library. It's been sitting in a close but not enough to promote state for a while. The main thing I wanted was to have generation of the bindings to existing DB schema. I also want to combine using Moja[1] datatypes for uniform handling of single/multi, normal/async, and errors.
[0] https://github.com/karmakaze/safeql
[1] https://github.com/karmakaze/moja
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C# 11 Features Now Previewing in Visual Studio: Generic Attributes and More
I made a similar thing for Java moja Options as needed other projects. It sort-of works but it's not great.
sqlc
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Give Up Sooner
"Is there a way to get sqlc to use pointers for nullable columns instead of the sql.Null types?"
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Show HN: Sqlbind a Python library to compose raw SQL
I came across this yesterday for golang: https://sqlc.dev which is somewhat like what you want, maybe.
Not sure it allows you to parameterize table names but the basic idea is codegen from sql queries so you are working with go code (autocompletion etc).
- API completa em Golang - Parte 7
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ORMs are nice but they are the wrong abstraction
Agreed, but tools like https://sqlc.dev, which I mention in the article, are a good trade-off that allows you to have verified, testable, SQL in your code.
- API completa em Golang - Parte 6
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Go ORMs Compared
sqlc is not strictly a conventional ORM. It offers a unique approach by generating Go code from SQL queries. This allows developers to write SQL, which sqlc then converts into type-safe Go code, reducing the boilerplate significantly. It ensures that your queries are syntactically correct and type-safe. sqlc is ideal for those who prefer writing SQL and are looking for an efficient way to integrate it into a Go application.
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Type-safe Data Access in Go using Prisma and sqlc
I was browsing awesome-go for ideas on how to setup my data access layer when I stumbled on sqlc. It seemed like a great option. Code generation is a strategy often used in the Go ecosystem and making my queries safe at compile time was an idea I really liked. Knex was great, but it required of me that I test thoroughly my queries at runtime and that I sanitize my query results to ensure type safety within my application.
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Level UP your RDBMS Productivity in GO
Now, we are going to generate the code. For this purpose, we are going to use sqlc.
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What 3rd-party libraries do you use often/all the time?
https://github.com/sqlc-dev/sqlc — for use with //go:generate
- API completa em Golang - Parte 1
What are some alternatives?
OneOf - Easy to use F#-like ~discriminated~ unions for C# with exhaustive compile time matching
sqlx - general purpose extensions to golang's database/sql
gitgrep - Lightning fast code searching made easy
GORM - The fantastic ORM library for Golang, aims to be developer friendly
safeql - Composable / async / functional / type-safe / parallel-pipelined queries and relations without SQL injection or N+1s.
SQLBoiler - Generate a Go ORM tailored to your database schema.
Norm - The SQL generation library you already know how to use.
ent - An entity framework for Go
openship - multi-channel fulfillment at scale
jet - Type safe SQL builder with code generation and automatic query result data mapping
pgx - PostgreSQL driver and toolkit for Go
PyPika - PyPika is a python SQL query builder that exposes the full richness of the SQL language using a syntax that reflects the resulting query. PyPika excels at all sorts of SQL queries but is especially useful for data analysis.