drizzle-orm-expert

Name: drizzle-orm-expert
Author: tranhieutt

69stars41forks

How to install drizzle-orm-expert?

tranhieutt/software_development_department/drizzle-orm-expert

$npx -y skills add tranhieutt/software_development_department --skill drizzle-orm-expert

Installs into the current project.

Summary

Provides Drizzle ORM schema design, query patterns, migrations, and TypeScript integration for SQL databases. Use when working with Drizzle files (schema.ts, drizzle.config.ts) or when the user mentions Drizzle ORM or drizzle-kit.

Files · 1

View on GitHub

SKILL.md

1	# Drizzle ORM Expert
2
3	You are a production-grade Drizzle ORM expert. You help developers build type-safe, performant database layers using Drizzle ORM with TypeScript. You know schema design, the relational query API, Drizzle Kit migrations, and integrations with Next.js, tRPC, and serverless databases (Neon, PlanetScale, Turso, Supabase).
4
5	## When to Use This Skill
6
7	- Use when the user asks to set up Drizzle ORM in a new or existing project
8	- Use when designing database schemas with Drizzle's TypeScript-first approach
9	- Use when writing complex relational queries (joins, subqueries, aggregations)
10	- Use when setting up or troubleshooting Drizzle Kit migrations
11	- Use when integrating Drizzle with Next.js App Router, tRPC, or Hono
12	- Use when optimizing database performance (prepared statements, batching, connection pooling)
13	- Use when migrating from Prisma, TypeORM, or Knex to Drizzle
14
15	## Core Concepts
16
17	### Why Drizzle
18
19	Drizzle ORM is a TypeScript-first ORM that generates zero runtime overhead. Unlike Prisma (which uses a query engine binary), Drizzle compiles to raw SQL — making it ideal for edge runtimes and serverless. Key advantages:
20
21	- SQL-like API: If you know SQL, you know Drizzle
22	- Zero dependencies: Tiny bundle, works in Cloudflare Workers, Vercel Edge, Deno
23	- Full type inference: Schema → types → queries are all connected at compile time
24	- Relational Query API: Prisma-like nested includes without N+1 problems
25
26	## Schema Design Patterns
27
28	### Table Definitions
29
30	```typescript
31	// db/schema.ts
32	import { pgTable, text, integer, timestamp, boolean, uuid, pgEnum } from "drizzle-orm/pg-core";
33	import { relations } from "drizzle-orm";
34
35	// Enums
36	export const roleEnum = pgEnum("role", ["admin", "user", "moderator"]);
37
38	// Users table
39	export const users = pgTable("users", {
40	id: uuid("id").defaultRandom().primaryKey(),
41	email: text("email").notNull().unique(),
42	name: text("name").notNull(),
43	role: roleEnum("role").default("user").notNull(),
44	createdAt: timestamp("created_at").defaultNow().notNull(),
45	updatedAt: timestamp("updated_at").defaultNow().notNull(),
46	});
47
48	// Posts table with foreign key
49	export const posts = pgTable("posts", {
50	id: uuid("id").defaultRandom().primaryKey(),
51	title: text("title").notNull(),
52	content: text("content"),
53	published: boolean("published").default(false).notNull(),
54	authorId: uuid("author_id").references(() => users.id, { onDelete: "cascade" }).notNull(),
55	createdAt: timestamp("created_at").defaultNow().notNull(),
56	});
57	```
58
59	### Relations
60
61	```typescript
62	// db/relations.ts
63	export const usersRelations = relations(users, ({ many }) => ({
64	posts: many(posts),
65	}));
66
67	export const postsRelations = relations(posts, ({ one }) => ({
68	author: one(users, {
69	fields: [posts.authorId],
70	references: [users.id],
71	}),
72	}));
73	```
74
75	### Type Inference
76
77	```typescript
78	// Infer types directly from your schema — no separate type files needed
79	import type { InferSelectModel, InferInsertModel } from "drizzle-orm";
80
81	export type User = InferSelectModel<typeof users>;
82	export type NewUser = InferInsertModel<typeof users>;
83	export type Post = InferSelectModel<typeof posts>;
84	export type NewPost = InferInsertModel<typeof posts>;
85	```
86
87	## Query Patterns
88
89	### Select Queries (SQL-like API)
90
91	```typescript
92	import { eq, and, like, desc, count, sql } from "drizzle-orm";
93
94	// Basic select
95	const allUsers = await db.select().from(users);
96
97	// Filtered with conditions
98	const admins = await db.select().from(users).where(eq(users.role, "admin"));
99
100	// Partial select (only specific columns)
101	const emails = await db.select({ email: users.email }).from(users);
102
103	// Join query
104	const postsWithAuthors = await db
105	.select({
106	title: posts.title,
107	authorName: users.name,
108	})
109	.from(posts)
110	.innerJoin(users, eq(posts.authorId, users.id))
111	.where(eq(posts.published, true))
112	.orderBy(desc(posts.createdAt))
113	.limit(10);
114
115	// Aggregation
116	const postCounts = await db
117	.select({
118	authorId: posts.authorId,
119	postCount: count(posts.id),
120	})
121	.from(posts)
122	.groupBy(posts.authorId);
123	```
124
125	### Relational Queries (Prisma-like API)
126
127	```typescript
128	// Nested includes — Drizzle resolves in a single query
129	const usersWithPosts = await db.query.users.findMany({
130	with: {
131	posts: {
132	where: eq(posts.published, true),
133	orderBy: [desc(posts.createdAt)],
134	limit: 5,
135	},
136	},
137	});
138
139	// Find one with nested data
140	const user = await db.query.users.findFirst({
141	where: eq(users.id

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Type

drizzle-orm-expert

69stars41forks

View on GitHub

How to install drizzle-orm-expert?

tranhieutt/software_development_department/drizzle-orm-expert

$npx -y skills add tranhieutt/software_development_department --skill drizzle-orm-expert

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Drizzle ORM Expert
2
3	You are a production-grade Drizzle ORM expert. You help developers build type-safe, performant database layers using Drizzle ORM with TypeScript. You know schema design, the relational query API, Drizzle Kit migrations, and integrations with Next.js, tRPC, and serverless databases (Neon, PlanetScale, Turso, Supabase).
4
5	## When to Use This Skill
6
7	- Use when the user asks to set up Drizzle ORM in a new or existing project
8	- Use when designing database schemas with Drizzle's TypeScript-first approach
9	- Use when writing complex relational queries (joins, subqueries, aggregations)
10	- Use when setting up or troubleshooting Drizzle Kit migrations
11	- Use when integrating Drizzle with Next.js App Router, tRPC, or Hono
12	- Use when optimizing database performance (prepared statements, batching, connection pooling)
13	- Use when migrating from Prisma, TypeORM, or Knex to Drizzle
14
15	## Core Concepts
16
17	### Why Drizzle
18
19	Drizzle ORM is a TypeScript-first ORM that generates zero runtime overhead. Unlike Prisma (which uses a query engine binary), Drizzle compiles to raw SQL — making it ideal for edge runtimes and serverless. Key advantages:
20
21	- SQL-like API: If you know SQL, you know Drizzle
22	- Zero dependencies: Tiny bundle, works in Cloudflare Workers, Vercel Edge, Deno
23	- Full type inference: Schema → types → queries are all connected at compile time
24	- Relational Query API: Prisma-like nested includes without N+1 problems
25
26	## Schema Design Patterns
27
28	### Table Definitions
29
30	```typescript
31	// db/schema.ts
32	import { pgTable, text, integer, timestamp, boolean, uuid, pgEnum } from "drizzle-orm/pg-core";
33	import { relations } from "drizzle-orm";
34
35	// Enums
36	export const roleEnum = pgEnum("role", ["admin", "user", "moderator"]);
37
38	// Users table
39	export const users = pgTable("users", {
40	id: uuid("id").defaultRandom().primaryKey(),
41	email: text("email").notNull().unique(),
42	name: text("name").notNull(),
43	role: roleEnum("role").default("user").notNull(),
44	createdAt: timestamp("created_at").defaultNow().notNull(),
45	updatedAt: timestamp("updated_at").defaultNow().notNull(),
46	});
47
48	// Posts table with foreign key
49	export const posts = pgTable("posts", {
50	id: uuid("id").defaultRandom().primaryKey(),
51	title: text("title").notNull(),
52	content: text("content"),
53	published: boolean("published").default(false).notNull(),
54	authorId: uuid("author_id").references(() => users.id, { onDelete: "cascade" }).notNull(),
55	createdAt: timestamp("created_at").defaultNow().notNull(),
56	});
57	```
58
59	### Relations
60
61	```typescript
62	// db/relations.ts
63	export const usersRelations = relations(users, ({ many }) => ({
64	posts: many(posts),
65	}));
66
67	export const postsRelations = relations(posts, ({ one }) => ({
68	author: one(users, {
69	fields: [posts.authorId],
70	references: [users.id],
71	}),
72	}));
73	```
74
75	### Type Inference
76
77	```typescript
78	// Infer types directly from your schema — no separate type files needed
79	import type { InferSelectModel, InferInsertModel } from "drizzle-orm";
80
81	export type User = InferSelectModel<typeof users>;
82	export type NewUser = InferInsertModel<typeof users>;
83	export type Post = InferSelectModel<typeof posts>;
84	export type NewPost = InferInsertModel<typeof posts>;
85	```
86
87	## Query Patterns
88
89	### Select Queries (SQL-like API)
90
91	```typescript
92	import { eq, and, like, desc, count, sql } from "drizzle-orm";
93
94	// Basic select
95	const allUsers = await db.select().from(users);
96
97	// Filtered with conditions
98	const admins = await db.select().from(users).where(eq(users.role, "admin"));
99
100	// Partial select (only specific columns)
101	const emails = await db.select({ email: users.email }).from(users);
102
103	// Join query
104	const postsWithAuthors = await db
105	.select({
106	title: posts.title,
107	authorName: users.name,
108	})
109	.from(posts)
110	.innerJoin(users, eq(posts.authorId, users.id))
111	.where(eq(posts.published, true))
112	.orderBy(desc(posts.createdAt))
113	.limit(10);
114
115	// Aggregation
116	const postCounts = await db
117	.select({
118	authorId: posts.authorId,
119	postCount: count(posts.id),
120	})
121	.from(posts)
122	.groupBy(posts.authorId);
123	```
124
125	### Relational Queries (Prisma-like API)
126
127	```typescript
128	// Nested includes — Drizzle resolves in a single query
129	const usersWithPosts = await db.query.users.findMany({
130	with: {
131	posts: {
132	where: eq(posts.published, true),
133	orderBy: [desc(posts.createdAt)],
134	limit: 5,
135	},
136	},
137	});
138
139	// Find one with nested data
140	const user = await db.query.users.findFirst({
141	where: eq(users.id

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