JSON to SQL Converter
Convert JSON data to SQL CREATE TABLE and INSERT statements with multiple database support
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JSON to SQL Converter Documentation
What is this tool?
This tool converts JSON format data into SQL DDL statements (CREATE TABLE) and INSERT statements. It automatically infers column data types from input data and generates database-specific SQL syntax for multiple database systems.
Key Features
- Support for JSON object array format input
- Automatic data type inference from data values (INT, VARCHAR, DATE, TIMESTAMP, BOOLEAN, etc.)
- Support for 5 major databases (MySQL, PostgreSQL, SQL Server, SQLite, Oracle)
- Automatic detection of primary key columns (id, *_id)
- Optional generation of DROP TABLE and INSERT statements
Common Use Cases
- Quickly convert API response data to database tables
- Migrate JSON data structures to relational databases
- Generate test database schemas with sample data
- Export data from NoSQL databases and convert to SQL format
Supported Databases
- MySQL - Popular open-source relational database
- PostgreSQL - Advanced open-source database with enterprise features
- SQL Server - Microsoft's enterprise-grade database solution
- SQLite - Lightweight embedded database
- Oracle - Enterprise commercial database
Frequently Asked Questions (FAQ)
How does the tool detect data types?
It scans the input data (up to the first 1000 rows) and checks for integers, floats, dates, booleans, and UUIDs through regex matching. If a column contains mixed types, VARCHAR (text) will be used by default.
What input formats are supported?
JSON object array format is supported. The tool automatically extracts all keys from all objects as column names.
Can the generated SQL be used directly in production?
It can be used, but it's recommended to check field types, especially string lengths (VARCHAR). The tool uses safe default values, but production schemas usually require specific constraints or indexes.
Is my data privacy secure?
Absolutely secure. This tool runs entirely in your browser through JavaScript. Your JSON data is never uploaded to our servers.
Which databases are supported?
We generate standard SQL compatible with MySQL, PostgreSQL, MS SQL Server (T-SQL), SQLite, and Oracle. Quote syntax and data types are automatically adjusted based on the selected database.