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supaschema and Drizzle both touch PostgreSQL schema workflows. Drizzle is a TypeScript ORM and query builder whose drizzle-kit generates SQL migrations from a TypeScript schema or pushes schema changes directly. supaschema keeps PostgreSQL SQL as the source of truth, generates guarded migrations, refreshes TypeScript and Zod outputs, runs deploy safety gates, and can apply through configured sync targets.

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Short answer

Use supaschema when you want to remove the ORM from schema ownership, migration generation, generated database contracts, and deploy safety. Keep Drizzle only when you specifically want its query-construction API or TypeScript schema DSL as a product choice.

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Comparison

CapabilitysupaschemaDrizzle
Schema source of truthDeclarative PostgreSQL SQLTypeScript schema
Migration generationDiffs PostgreSQL parse trees (libpg_query)drizzle-kit generate from the TypeScript schema
Direct push without SQL filesNo, migrations are always rendered SQL; sync applies the rendered migration after gates passdrizzle-kit push applies schema changes directly
Replay-safety and lock-hazard lintingYes (supaschema check)Not a built-in migration linter
RLS policiesModeled and diffed structurally in SQLSupported via pgPolicy in the TypeScript schema
Application data contractGenerated TypeScript and Zod from SQLInferred from the TypeScript schema and Drizzle query API
Applies migrationsYes, through explicit or approved automatic supaschema sync targetsYes (drizzle-kit migrate / push)

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Use supaschema instead of Drizzle for schema, migrations, and types

supaschema replaces the schema-management half of Drizzle — the TypeScript schema as source of truth plus drizzle-kit migration generation — with a SQL-owned workflow:
  • PostgreSQL SQL is the source of truth. The migration reflects exactly what Postgres will run, with no TypeScript-to-SQL translation and no schema feature limited by what the TypeScript schema builder models.
  • Migration safety is built in. supaschema check gates replay-safety and lock hazards as SUPA_* diagnostics — a lane drizzle-kit does not cover.
  • Structural RLS diffing. RLS policy bodies are diffed structurally, so a changed policy predicate is caught even when the name stays the same.
  • No accidental drift. sync applies reviewed migration files after safety gates and target-history reconciliation instead of pushing an unreviewed schema state.
  • Typed data access without the ORM schema layer. supaschema types generates TypeScript types and Zod validators from the SQL. Application code can use those contracts with a PostgreSQL driver, a platform client, or an optional query builder.
How the workflow maps onto what Drizzle does:
  1. Write the schema as declarative SQL in schemaPaths (replaces the TypeScript schema files).
  2. supaschema diff renders a replay-safe migration (replaces drizzle-kit generate).
  3. supaschema check proves replay safety and lock impact (no drizzle-kit equivalent).
  4. supaschema types regenerates the TypeScript and Zod outputs (the data contract Drizzle otherwise derives from its schema).
  5. Apply the SQL with supaschema sync or another Postgres migration runner (replaces drizzle-kit migrate / push).
  6. Execute PostgreSQL SQL through your runtime driver or platform client, using generated TypeScript and Zod helpers as the application boundary.

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What stays optional

  • A query builder can still be useful when your team wants composable TypeScript query construction. It is not required for schema ownership, generated types, validators, migration generation, or deploy safety.
  • Direct drizzle-kit push remains a Drizzle workflow for teams that intentionally want TypeScript schema pushes instead of reviewed generated SQL and sync target reconciliation.
  • If your team wants one TypeScript DSL to own both schema and query construction, Drizzle’s unified model fits that preference. If PostgreSQL SQL should be the contract, use supaschema as the owner.
See ORM-free applications for the canonical directive.
Last verified 2026-06-17 against the Drizzle documentation. Drizzle evolves; confirm current behavior before relying on it.

Prisma comparison

How supaschema compares to Prisma Migrate and the Prisma schema DSL.

The check command

The replay-safety and lock-hazard diagnostics supaschema runs on each migration.

ORM-free apps

Use generated TypeScript and Zod contracts without an ORM schema layer.

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Sources

Last modified on June 18, 2026