JSON to SQL: Generate CREATE TABLE & INSERT Statements

From JSON API Data to SQL Database in Seconds

When migrating data from a NoSQL source, API export, or JSON fixture into a relational database, you need both a table schema and INSERT statements. Our generator produces both from your JSON array automatically.

Generated SQL Output Includes

• CREATE TABLE statement with inferred column types
• INSERT INTO statements for each JSON object/row
• Proper SQL escaping for string values
• NULL handling for missing or null JSON values

Supported SQL Dialects

• PostgreSQL: Uses TEXT, INTEGER, NUMERIC, BOOLEAN, TIMESTAMP
• MySQL: Uses VARCHAR(255), INT, DOUBLE, TINYINT(1), DATETIME
• SQLite: Uses TEXT, INTEGER, REAL

// JSON Input
[
  { "id": 1, "name": "Alice", "score": 9.5, "active": true },
  { "id": 2, "name": "Bob",   "score": 8.1, "active": false }
]

-- Generated SQL (PostgreSQL)
CREATE TABLE users (
  id      INTEGER,
  name    TEXT,
  score   NUMERIC,
  active  BOOLEAN
);

INSERT INTO users (id, name, score, active) VALUES
  (1, 'Alice', 9.5, TRUE),
  (2, 'Bob', 8.1, FALSE);