JSON → SQL CREATE TABLE Generator
Paste JSON data and generate SQL CREATE TABLE statements. Infers column types from values.
JSON
SQL CREATE TABLE
💡 Definition
SQL Table Generation
- SQL CREATE TABLE statements define database table structure with column names and data types.
- This tool analyzes JSON data to infer appropriate SQL types (VARCHAR, INTEGER, REAL, BOOLEAN, TEXT) and generates ready-to-use DDL.
📖 How to use
Step by Step
- Paste a JSON object or array of objects on the left
- SQL CREATE TABLE statement appears on the right
- Column types are inferred from JSON values
- For arrays, all objects are analyzed for best type fit
🎯 Use cases
When to use
- Quick database schema creation from API data
- Prototyping database tables from JSON payloads
- Learning SQL DDL syntax
- Migrating JSON data to relational databases
Frequently Asked Questions
What SQL types are generated?▾
Strings → VARCHAR(255) or TEXT (if > 255 chars), integers → INTEGER, decimals → REAL, booleans → BOOLEAN, null → TEXT (nullable), nested objects → TEXT (stored as JSON).
Which SQL dialect is used?▾
The output uses standard ANSI SQL that works with PostgreSQL, MySQL, SQLite, and most databases. You may need minor adjustments for specific database systems.