Build a Database Schema Online
Designing a database schema from existing data — a JSON API response, a CSV export, or a sample dataset — is a common task when building new features or migrating data between systems. Instead of writing CREATE TABLE and INSERT statements from scratch, devtoolkit.sh lets you generate them directly from your data. Convert a JSON object to a SQL CREATE TABLE with correct column types, import CSV data as batch INSERT statements, and format existing SQL for readability. These tools together cover the full workflow from raw data to a working database schema in minutes, without requiring a local database installation.
Infer a SQL CREATE TABLE statement from a JSON object or array.
Convert CSV data into SQL INSERT statements with auto-detected column types.
Format and beautify SQL queries with proper indentation and uppercase keywords.
FAQ
- How do I generate a SQL schema from a JSON API response?
- Copy the JSON object from your API response and paste it into the JSON to SQL Schema converter. It infers column names and types from the key-value pairs and generates a ready-to-run CREATE TABLE statement.
- How do I import CSV data into a database?
- Paste your CSV into the CSV to SQL converter, set the target table name, and get a batch of INSERT statements you can run directly against your database. The tool handles header detection and string quoting automatically.
- Does the generated SQL work with PostgreSQL, MySQL, and SQLite?
- Yes. The generated SQL uses standard types and syntax compatible with all three. Minor dialect differences (like AUTO_INCREMENT vs SERIAL) are noted in the output.