kysely
Exposed
kysely | Exposed | |
---|---|---|
26 | 28 | |
9,317 | 7,901 | |
3.2% | 0.6% | |
9.2 | 9.5 | |
2 days ago | 2 days ago | |
TypeScript | Kotlin | |
MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
kysely
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Show HN: Tsynamo – Type-friendly DynamoDB query builder for TypeScript
Hello HN! I was recently introduced to Kysely (https://github.com/kysely-org/kysely), a type-safe Typescript SQL query builder, and instantly fell in love! I got inspired and wanted to make something similar for AWS DynamoDB.
Thus, I developed Tsynamo! Instead of calling it type-safe, I decided to go with type-friendly, because the library is still in an early stage, and is not 100% type-safe.
Under the hood, Tsynamo compiles the built queries into AWS SDK v3 commands. I feel that Tsynamo simplifies the AWS SDK API quite a lot since the developer doesn't have to mess around with condition/filter expressions or attribute names/values themselves, and as a bonus gets autocompletion for building the queries!
There's also a playground to test it out in your browser: https://try.tsynamo.dev. It might not have the most up-to-date API of the library in use yet, but you can get the library's main idea from there.
Since the project is still in its early stages, it doesn't yet have 100% support for all DynamoDB features, like querying indexes. The next steps will be increasing the support coverage and perhaps adding automatic type generation as inspired by kysely-codegen (https://github.com/RobinBlomberg/kysely-codegen).
Would love to get some feedback, thanks in advance!
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Flyweight: A Node.js ORM Specifically for SQLite
How does this compare with my current favorite lite sqlite wrapper kysely? https://kysely.dev/
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ORMs are nice but they are the wrong abstraction
ORMs suck, but raw SQL embedded in your code sucks too.
This might be good time to plug my TypeScript non-ORM: https://jawj.github.io/zapatos/.
I should say I also like what I've seen of https://kysely.dev/ and https://pgtyped.dev/.
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NextJs and Kysely
As we can see using Kysely with Nextjs is very simple, and it allows us to create queries in a simple way, create tables, create migrations, transactions, etc.
- Kysely – type-safe TypeScript SQL query builder
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Drizzle is just as unready for prime-time as Prisma, what else is there?
I've switched to kysely (https://kysely.dev) to just build SQL instead and it's nice to have full SQL access but still be type safe to my schema. Enjoying it so far.
- An effective way to build a heavy CRUD Rest API?
- any typescript users, that'd be interested in using oracledb with kysely (the type-safe query builder)?
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I Hate NestJS
Kysely looks like the thing most people would want. It's not a full ORM though - just a well-typed query builder.
https://kysely.dev/
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Database Review: Top Five Missing Features from Database APIs
Kysely
Exposed
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Drizzle is just as unready for prime-time as Prisma, what else is there?
So is it like Exposed for Kotlin which is a typesafe Kotlin DSL for building sql queries? I’ve been looking for something like this in typescript! https://github.com/JetBrains/Exposed
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Database Testing with Testcontainers and Kotlin Exposed ORM
object TestDatabase { private val mySQLContainer: MySQLContainer = MySQLContainer("mysql:8.0.26").apply { withDatabaseName("test-db") withUsername("test-user") withPassword("test-password") start() // Start the container } init { val config = HikariConfig().apply { jdbcUrl = mySQLContainer.jdbcUrl username = mySQLContainer.username password = mySQLContainer.password driverClassName = "com.mysql.cj.jdbc.Driver" maximumPoolSize = 10 } val dataSource = HikariDataSource(config) // This doesn't connect to the database but provides a descriptor for future use // In the main app, we would do this on system start up // https://github.com/JetBrains/Exposed/wiki/Database-and-DataSource Database.connect(dataSource) // Create the schema transaction { SchemaUtils.create(Users) } } }
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I'm creating a REST API using KTOR. What's the best ORM to go with KTOR ?
Exposed SQL is pretty good.
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speed of a left join with millions of rows
I am using Kotlins Exposed DSL to access my postgreSQL database. I am running an SQL query which involves doing a one-to-many left join, with the first table having tens of thousands of rows and the second table having millions of rows. The database is stored locally on the machine. I would expect the returned query to be less than one thousand rows.
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Return a nested list of child table using Kotlin Exposed Dao
I understand that `referrersOn` and `referencedOn` can be used, however in the documentations StarWars example, the child table needs to have a column indicating the parent_id row it is joined to. This does not work in my case as my child table can be associated to multiple parent_ids.
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Replicating Jetbrains Exposed Star Wars Example in IntelliJ Scratch file
I am following this wiki to learn kotlin exposed. It contains an example of 'Referencing' using Star Wars data. I would like to create a scratch and/or console file in IntelliJ which reproduces this simple example. However When I try to run the code I get errors (see below). Is there something I am missing here?
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How are you all handling database persistence?
Exposed by JetBrains https://github.com/JetBrains/Exposed
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Why people don't like Java?
Alternatively there are... hybrid solutions like Kotlin's https://github.com/JetBrains/Exposed or https://jdbi.org/ that don't quite... do all the heavy lifting for querying but allow you to sorta stitch queries together manually.
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Using PostgreSQL as an Append-only Datastore with Kotlin and Exposed
In our last episode (https://youtu.be/Uza\_dWsNMUs) we worked out how to save stock items in PostgreSQL (https://www.postgresql.org/) using the JetBrains Exposed library (https://github.com/JetBrains/Exposed). This time we refactor our existing file-based storage, extracting an interface that we can implement with files, in-memory, or with Exposed. For the database version, instead of replacing items in a table when they change, we choose to implement an append-only datastore. This keeps all the old versions of every row, using a query to select the latest versions when we want to see the current state. This has the advantage that we can rebuild the state of our system if things go wrong, and may also be faster than amending when we consider transactions. This is part 62 of an exploration of where a Test Driven Development implementation of the Gilded Rose stock control system might take us in Kotlin. You can see the whole series as a playlist https://www.youtube.com/playlist?list=PL1ssMPpyqociJNwykAOB9\_KEZVW7BW7m2 and the code on GitHub https://github.com/dmcg/gilded-rose-tdd If you like this, you’ll probably like my book Java to Kotlin, A Refactoring Guidebook (http://java-to-kotlin.dev). It's about far more than just the syntax differences between the languages - it shows how to upgrade your thinking to a more functional style. I have some free time between producing videos and working for team Gilded Rose. If you like these videos I'd like to work with you - please get in touch - [email protected]
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Writing to db
I have used hikari and exposed to do this in the past with postgres, although other dialects are supported.
What are some alternatives?
drizzle-orm - Headless TypeScript ORM with a head. Runs on Node, Bun and Deno. Lives on the Edge and yes, it's a JavaScript ORM too 😅
Ktorm - A lightweight ORM framework for Kotlin with strong-typed SQL DSL and sequence APIs.
Prisma - Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
SQLDelight - SQLDelight - Generates typesafe Kotlin APIs from SQL
Knex - A query builder for PostgreSQL, MySQL, CockroachDB, SQL Server, SQLite3 and Oracle, designed to be flexible, portable, and fun to use.
kotlin-jpa-specification-dsl - This library provides a fluent DSL for querying spring data JPA repositories using spring data Specifications (i.e. the JPA Criteria API), without boilerplate code or a generated metamodel.
TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
requery - requery - modern SQL based query & persistence for Java / Kotlin / Android
prisma-kysely - 🪄 Generate Kysely types directly from your Prisma schema!
kwery - Kwery is an SQL library for Kotlin
Sequelize - Feature-rich ORM for modern Node.js and TypeScript, it supports PostgreSQL (with JSON and JSONB support), MySQL, MariaDB, SQLite, MS SQL Server, Snowflake, Oracle DB (v6), DB2 and DB2 for IBM i.
kotlin-nosql - NoSQL database query and access library for Kotlin