Fixes

• Forward args correctly when using withReplica feature #1536. Thanks @Angelelz
• Fix selectDistinctOn not working with multiple columns #1466. Thanks @L-Mario564

New Features/Helpers

🎉 Detailed JSDoc for all query builders in all dialects - thanks @realmikesolo

You can now access more information, hints, documentation links, etc. while developing and using JSDoc right in your IDE. Previously, we had them only for filter expressions, but now you can see them for all parts of the Drizzle query builder

🎉 New helpers for aggregate functions in SQL - thanks @L-Mario564

Remember, aggregation functions are often used with the GROUP BY clause of the SELECT statement. So if you are selecting using aggregating functions and other columns in one query, be sure to use the .groupBy clause

Here is a list of functions and equivalent using sql template

count

await db.select({ value: count() }).from(users);
await db.select({ value: count(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`count('*'))`.mapWith(Number) 
}).from(users);
await db.select({ 
  value: sql`count(${users.id})`.mapWith(Number) 
}).from(users);

countDistinct

await db.select({ value: countDistinct(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`count(${users.id})`.mapWith(Number) 
}).from(users);

avg

await db.select({ value: avg(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`avg(${users.id})`.mapWith(String) 
}).from(users);

avgDistinct

await db.select({ value: avgDistinct(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`avg(distinct ${users.id})`.mapWith(String) 
}).from(users);

sum

await db.select({ value: sum(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`sum(${users.id})`.mapWith(String) 
}).from(users);

sumDistinct

await db.select({ value: sumDistinct(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`sum(distinct ${users.id})`.mapWith(String) 
}).from(users);

max

await db.select({ value: max(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`max(${expression})`.mapWith(users.id) 
}).from(users);

min

await db.select({ value: min(users.id) }).from(users);

// It's equivalent to writing
await db.select({ 
  value: sql`min(${users.id})`.mapWith(users.id) 
}).from(users);

New Packages

🎉 ESLint Drizzle Plugin

For cases where it's impossible to perform type checks for specific scenarios, or where it's possible but error messages would be challenging to understand, we've decided to create an ESLint package with recommended rules. This package aims to assist developers in handling crucial scenarios during development

Big thanks to @Angelelz for initiating the development of this package and transferring it to the Drizzle Team's npm

Install

[ npm | yarn | pnpm | bun ] install eslint eslint-plugin-drizzle

You can install those packages for typescript support in your IDE

[ npm | yarn | pnpm | bun ] install @typescript-eslint/eslint-plugin @typescript-eslint/parser

Usage

Create a .eslintrc.yml file, add drizzle to the plugins, and specify the rules you want to use. You can find a list of all existing rules below

root: true
parser: '@typescript-eslint/parser'
parserOptions:
  project: './tsconfig.json'
plugins:
  - drizzle
rules:
  'drizzle/enforce-delete-with-where': "error"
  'drizzle/enforce-update-with-where': "error"

All config

This plugin exports an all config that makes use of all rules (except for deprecated ones).

root: true
extends:
  - "plugin:drizzle/all"
parser: '@typescript-eslint/parser'
parserOptions:
  project: './tsconfig.json'
plugins:
  - drizzle

At the moment, all is equivalent to recommended

root: true
extends:
  - "plugin:drizzle/recommended"
parser: '@typescript-eslint/parser'
parserOptions:
  project: './tsconfig.json'
plugins:
  - drizzle

Rules

enforce-delete-with-where: Enforce using delete with the.where() clause in the .delete() statement. Most of the time, you don't need to delete all rows in the table and require some kind of WHERE statements.

Error Message:

Without `.where(...)` you will delete all the rows in a table. If you didn't want to do it, please use `db.delete(...).where(...)` instead. Otherwise you can ignore this rule here

Optionally, you can define a drizzleObjectName in the plugin options that accept a string or string[]. This is useful when you have objects or classes with a delete method that's not from Drizzle. Such a delete method will trigger the ESLint rule. To avoid that, you can define the name of the Drizzle object that you use in your codebase (like db) so that the rule would only trigger if the delete method comes from this object:

Example, config 1:

"rules": {
  "drizzle/enforce-delete-with-where": ["error"]
}

class MyClass {
  public delete() {
    return {}
  }
}

const myClassObj = new MyClass();

// ---> Will be triggered by ESLint Rule
myClassObj.delete()

const db = drizzle(...)
// ---> Will be triggered by ESLint Rule
db.delete()

Example, config 2:

"rules": {
  "drizzle/enforce-delete-with-where": ["error", { "drizzleObjectName": ["db"] }],
}

class MyClass {
  public delete() {
    return {}
  }
}

const myClassObj = new MyClass();

// ---> Will NOT be triggered by ESLint Rule
myClassObj.delete()

const db = drizzle(...)
// ---> Will be triggered by ESLint Rule
db.delete()

enforce-update-with-where: Enforce using update with the.where() clause in the .update() statement. Most of the time, you don't need to update all rows in the table and require some kind of WHERE statements.

Error Message:

Without `.where(...)` you will update all the rows in a table. If you didn't want to do it, please use `db.update(...).set(...).where(...)` instead. Otherwise you can ignore this rule here

Optionally, you can define a drizzleObjectName in the plugin options that accept a string or string[]. This is useful when you have objects or classes with a delete method that's not from Drizzle. Such as update method will trigger the ESLint rule. To avoid that, you can define the name of the Drizzle object that you use in your codebase (like db) so that the rule would only trigger if the delete method comes from this object:

Example, config 1:

"rules": {
  "drizzle/enforce-update-with-where": ["error"]
}

class MyClass {
  public update() {
    return {}
  }
}

const myClassObj = new MyClass();

// ---> Will be triggered by ESLint Rule
myClassObj.update()

const db = drizzle(...)
// ---> Will be triggered by ESLint Rule
db.update()

Example, config 2:

"rules": {
  "drizzle/enforce-update-with-where": ["error", { "drizzleObjectName": ["db"] }],
}

class MyClass {
  public update() {
    return {}
  }
}

const myClassObj = new MyClass();

// ---> Will NOT be triggered by ESLint Rule
myClassObj.update()

const db = drizzle(...)
// ---> Will be triggered by ESLint Rule
db.update()