---
title: "JSON Schema to SQL DDL"
slug: "jsonschema-to-sql"
type: recipe
locale: en-US
canonical: "https://www.coremodels.io/recipe/converter/jsonschema-to-sql"
updatedAt: "2026-08-27T01:42:16+03:00"
---

# JSON Schema to SQL DDL

From the JSON world's common tongue to CREATE TABLE, in your dialect.

Import a JSON Schema document as governed Types and Elements, then export CREATE TABLE DDL in your engine's dialect, postgres, mysql, or sqlserver. required round-trips as NOT NULL via the element-facts mixin, and semantic annotations ride out as column COMMENTs. Everything the relational target could not hold exactly is declared in the lossiness ledger, not silently dropped.