How the JSON to PostgreSQL Converter Works

PostgreSQL is the world's most advanced open source database. Getting your JSON data into it shouldn't require manual schema design. This converter analyzes your data and generates optimal DDL and DML.

What Gets Generated

• DROP TABLE IF EXISTS (safe re-runs)
• CREATE TABLE with inferred column types
• Primary key detection for 'id' columns
• INSERT statements with all your data
• Proper PostgreSQL-specific syntax

Type Inference

The converter scans ALL rows to determine the best PostgreSQL type for each column. It won't be fooled by the first row having an integer when later rows have decimals.

Primary Key Detection

Columns named 'id' are automatically designated as PRIMARY KEY. If the values are integers, the type becomes SERIAL for auto-increment.

CREATE TABLE users (
  id SERIAL PRIMARY KEY,
  name VARCHAR(255) NOT NULL,
  email VARCHAR(255) NOT NULL
);

Nullable Column Detection

If any row has a null value for a column, that column is marked as nullable. Otherwise, it gets a NOT NULL constraint.

JSONB for Complex Data

Nested objects and arrays are stored as JSONB, PostgreSQL's efficient binary JSON type. This preserves the structure while enabling JSON queries.

INSERT INTO products (id, name, metadata)
VALUES
(1, 'Widget', '{"tags": ["new", "featured"]}'::jsonb);

Value Escaping

String values are properly escaped with single quotes doubled. This prevents SQL injection and handles special characters safely.

-- Input: "O'Brien's Store"
-- Output: 'O''Brien''s Store'

Column Name Sanitization

JSON keys are converted to lowercase and special characters are replaced with underscores to create valid PostgreSQL identifiers.