GitHub - hypequery/hypequery: hypequery - The TypeScript ...

The type-safe analytics backend for ClickHouse

Build ClickHouse queries once, run them inline, over HTTP, in React, or from agents.

The problem

Querying ClickHouse from TypeScript with the official client means writing raw SQL strings, casting results to any, and maintaining hand-rolled types that drift from your real schema:

// Raw @clickhouse/client — no types, no safety, breaks silently
const result = await client.query({
  query: `SELECT region, sum(total) as revenue
          FROM orders
          WHERE created_at >= '2026-01-01'
          GROUP BY region
          ORDER BY revenue DESC`,
  format: 'JSONEachRow',
});
const rows = await result.json(); // typed as any[]
//    ^^^^ schema drift, typos, and runtime errors are on you

The solution

hypequery generates TypeScript types directly from your live ClickHouse schema, then gives you a fluent query builder where every table name, column, filter, and result is fully typed:

import { createQueryBuilder } from '@hypequery/clickhouse';
import type { IntrospectedSchema } from './analytics/schema.js';

const db = createQueryBuilder<IntrospectedSchema>({ /* connection */ });

const revenueByRegion = await db
  .table('orders')             // ✅ autocompletes your real tables
  .select(['region'])          // ✅ only valid columns for this table
  .where('created_at', 'gte', '2026-01-01') // ✅ type-checked operator + value
  .sum('total', 'revenue')     // ✅ typed aggregation
  .groupBy('region')
  .orderBy('revenue', 'DESC')
  .execute();
// revenueByRegion is fully typed — no casting, no surprises

If this saves you from hand-writing ClickHouse types, a ⭐ helps other TypeScript devs find it.

Build on top of your real ClickHouse schema instead of hand-maintained query types
Reuse the same query definition across scripts, APIs, React apps, and agents
Start local with the query builder, then add HTTP routes only when you need them
Keep inputs, outputs, and SQL behavior explicit enough to test and reason about

Packages

@hypequery/clickhouse: typed ClickHouse query builder
@hypequery/serve: code-first runtime for query contracts, HTTP routes, docs, and adapters
@hypequery/react: thin TanStack Query hooks for hypequery APIs
@hypequery/cli: scaffolding, schema generation, and local dev tooling

Quick Start

npm install -D @hypequery/cli
npx hypequery init

That gives you the main path:

Generate schema types from ClickHouse
Write typed queries locally
Expose the queries over HTTP when you need a shared contract

Add Contracts And HTTP When Needed

import { initServe } from '@hypequery/serve';
import { z } from 'zod';
import { db } from './analytics/client.js';

const { query, serve } = initServe({
  context: () => ({ db }),
  basePath: '/api/analytics',
});

const activeUsers = query({
  description: 'List active users by region',
  input: z.object({ region: z.string() }),
  query: ({ ctx, input }) =>
    ctx.db
      .table('users')
      .where('status', 'eq', 'active')
      .where('region', 'eq', input.region)
      .execute(),
});

export const api = serve({
  queries: { activeUsers },
});

api.route('/activeUsers', api.queries.activeUsers);

The same query can then be:

executed directly with api.execute(...)
exposed as an HTTP route
consumed from React with @hypequery/react
described for tools and agents

If you do not need serve, a standalone query can execute itself:

const activeUsers = query({
  input: z.object({ region: z.string() }),
  query: ({ input }) =>
    db
      .table('users')
      .where('status', 'eq', 'active')
      .where('region', 'eq', input.region)
      .execute(),
});

await activeUsers.execute({
  input: { region: 'EMEA' },
});

The same served execution API also works for semantic metrics:

import { initServe } from '@hypequery/serve';
import { createQueryBuilder } from '@hypequery/clickhouse';
import { dataset, dimension, measure } from '@hypequery/datasets';

const Orders = dataset('orders', {
  source: 'orders',
  dimensions: {
    region: dimension.string(),
  },
  measures: {
    revenue: measure.sum('total'),
  },
});

const revenue = Orders.metric('revenue', { measure: 'revenue' });
const queryBuilder = createQueryBuilder({ url, username, password, database });

const { serve } = initServe({
  context: () => ({ db: queryBuilder }),  // ✅ Pass queryBuilder via context once
});

export const api = serve({
  metrics: { revenue },          // ✅ Auto-extracts queryBuilder from context
  datasets: { orders: Orders },
});

await api.execute('revenue', {
  input: { dimensions: ['region'] },
});

await api.execute('dataset:orders', {
  input: { dimensions: ['region'], measures: ['revenue'] },
});

CLI

# Scaffold analytics files and env vars
npx hypequery init

# Run the local dev server with docs
npx hypequery dev

# Regenerate schema types
npx hypequery generate

Learn More

License

Apache-2.0. See LICENSE.

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