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JSON to SQL Converter
Convert JSON arrays to SQL CREATE TABLE and INSERT statements. Supports PostgreSQL, MySQL, and SQLite with automatic type inference.
About JSON to SQL Conversion
- Automatically infers SQL column types from JSON values — integers, floats, booleans, dates, UUIDs, and text.
- Supports PostgreSQL, MySQL, and SQLite with dialect-specific syntax (quoting, types, booleans).
- Generates CREATE TABLE with NOT NULL constraints and INSERT statements with proper escaping.
- Batch INSERT mode combines all rows into a single statement for faster bulk loading.
- Nested objects and arrays are serialized as JSON/JSONB (PostgreSQL) or TEXT (SQLite).
- Everything runs in your browser — no data is sent over the network.
Frequently Asked Questions
How do I convert JSON to SQL INSERT statements?
Paste a JSON array of objects and DevBolt generates SQL CREATE TABLE and INSERT statements automatically. The tool infers column types from values: strings become VARCHAR or TEXT, integers become INTEGER or BIGINT, floats become DOUBLE PRECISION or REAL, booleans become BOOLEAN, dates become TIMESTAMP, and UUIDs become UUID (PostgreSQL) or CHAR(36). You can choose between PostgreSQL, MySQL, and SQLite dialects. Options include batch INSERT, DROP TABLE IF EXISTS, and nullable columns. Download the generated .sql file or copy it directly.
What SQL dialects are supported?
DevBolt supports PostgreSQL (JSONB, UUID, TIMESTAMP, DOUBLE PRECISION, dollar-quoting), MySQL (backtick quoting, JSON type, DATETIME, AUTO_INCREMENT), and SQLite (INTEGER/REAL/TEXT type affinities, boolean as 0/1). Each dialect uses its native syntax for quoting identifiers, data types, and auto-increment columns. The tool generates dialect-specific SQL that runs without modification on the target database.
How are JSON data types mapped to SQL column types?
The converter maps types based on value analysis: strings become VARCHAR or TEXT, integers become INTEGER (or BIGINT for large values), floating-point numbers become DOUBLE PRECISION or REAL, booleans become BOOLEAN (or INTEGER 0/1 for SQLite), ISO date strings become TIMESTAMP or DATETIME, UUID strings become UUID (PostgreSQL) or CHAR(36), and nested objects become JSON or JSONB columns. Null values make columns nullable. The type mapping adapts per dialect to use native types.
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