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@igalklebanov igalklebanov released this 13 Apr 05:52
· 33 commits to master since this release
0.28.0
b856577

Hey 👋

Transactions are getting a lot of love in this one!

As part an effort to replace Knex with Kysely, B4nan, the author of mikro-orm drove the new setAccessMode('read only'|'read write') method when starting transactions.

You can now commit/rollback transactions manually and there's even savepoint support:

const trx = await db.startTransaction().execute()

try {
  // do stuff with `trx`, including work with savepoints via the new `savepoint(name)`, `rollbackToSavepoint(name)` and `releaseSavepoint(name)` methods!

  await trx.commit().execute()
} catch (error) {
  await trx.rollback().execute()

  throw error
}

We also added using keyword support, so now you can write:

await using db = new Kysely({...})

and db.destroy() will be called automatically once the current scope is exited.
If you plan on trying this out (it is optional, you can still const db = new Kysely({...}) and await db.destroy() manually), the using keyword requires typescript >= 5.2 and the following tsconfig.json options:

{
  "compilerOptions": {
    "target": "ES2022",
    "lib": ["ESNext", ...],
    ...
  }
  ...
}

We also added a plugin to handle in () and not in (). It comes with 2 handling strategies, one similar to how Knex.js, PrismaORM, Laravel and SQLAlchemy do it, and one similar to how TypeORM and Sequelize do it. It also supports custom strategies, e.g. throwing an error to avoid making a call to the database and wasting resources. Here's an example with one of the strategies we ship:

import {
  // ...
  HandleEmptyInListsPlugin,
  // ...
  replaceWithNoncontingentExpression,
  // ...
} from 'kysely'

const db = new Kysely<Database>({
  // ...
  plugins: [
    new HandleEmptyInListsPlugin({
      strategy: replaceWithNoncontingentExpression
    })
  ],
})

// ...
  .where('id', 'in', [])
  .where('first_name', 'not in', []) // => `where 1 = 0 and 1 = 1`

🚀 Features

PostgreSQL 🐘 / MySQL 🐬
  • feat: Allow read-only transactions in Postgres and MySQL by B4nan in #1342 & #1350
PostgreSQL 🐘 / MS SQL Server 🥅
  • Add within group clause support for aggregate function builder by @ivashog in #1024
PostgreSQL 🐘 / SQLite 📘
PostgreSQL 🐘
MySQL 🐬
MS SQL Server 🥅
  • Add outer and cross apply (mssql) by @drew-marsh in #1074
  • refactor: extract validateConnections and resetConnectionsOnRelease to root of config, flip default resetConnectionsOnRelease behavior. by @igalklebanov in #1388
SQLite 📘

🐞 Bugfixes

PostgreSQL 🐘
  • fix: postgres auto increment introspection is wrong after column renames. by @igalklebanov in #1391

📖 Documentation

📦 CICD & Tooling

⚠️ Breaking Changes

  • InferResult now outputs InsertResult[], UpdateResult[], DeleteResult[], MergeResult[], instead of InsertResult, UpdateResult, DeleteResult, MergeResult. To get the singular form, use type Result = InferResult<T>[number].
  • Some generic/wide usages of QueryCreator's methods should no longer pass type checks. We never supported these officially.
  • As preventAwait is now removed on all builders, you must avoid awaiting builders without calling execute-like methods on your own.
  • TypeScript versions 4.5 and older are no longer supported. You will get an immediate compilation error telling you to upgrade.
  • QueryResult.numUpdatedOrDeletedRows has been removed (after spending ~2 years in deprecation). We still log a warning. Outdated dialects that don't use QueryResult.numAffectedRows should be updated OR forked.
  • DefaultQueryExecutor.compileQuery now requires passing a queryId argument. Use the newly exported createQueryId() as that argument value from now on.
  • UpdateValuesNode type has been removed.
  • MssqlDialectConfig.tedious.resetConnectionOnRelease has been deprecated, and had it's default flipped to false. Use MssqlDialectConfig.resetConnectionsOnRelease instead.
  • MssqlDialectConfig.tarn.options.validateConnections has been deprecated. Use MssqlDialectConfig.validateConnections instead.
  • String literals are now ' injection protected, hopefully. Please report any issues.

🐤 New Contributors

Full Changelog: 0.27.6...0.28.0

Contributors

Ciantic, samclearman, and 14 other contributors
Assets 2
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