PlayWithJSON

JSON to PostgreSQL Converter

PostgreSQL DDL & SQL

Convert JSON or JSON5 data into PostgreSQL CREATE TABLE statements, JSONB columns, and INSERT queries instantly in your browser.

Samples:
Indent:
JSON / JSON5 InputJSON
19 lines | 409 charsJSON
PostgreSQL SQL OutputSQL
-- PostgreSQL Table Schema generated from JSON
CREATE TABLE IF NOT EXISTS public.users (
  status VARCHAR(255),
  statuscode INTEGER,
  data JSONB,
  timestamp TIMESTAMPTZ
);

-- Sample Data Insertion
INSERT INTO public.users (status, statuscode, data, timestamp)
VALUES
('success', 200, '{"userId":"usr_948201a","username":"shyam_dev","email":"shyam@example.com","profile":{"firstName":"Shyam","lastName":"Bhati","skills":["Next.js","TypeScript","Tailwind CSS"]},"preferences":{"theme":"dark","notifications":true}}'::jsonb, '2026-10-20T21:10:00Z');
12 lines | 550 charsSQL

JSON to PostgreSQL Table & DDL Generator Online

Convert JSON and JSON5 objects or lists of rows into clean PostgreSQL CREATE TABLE DDL schemas and formatted INSERT INTO SQL statements.

Features smart type inference for SERIAL primary keys, UUIDs, INTEGER, NUMERIC, TIMESTAMPTZ, native PostgreSQL arrays (TEXT[]), and high-performance JSONB columns. Completely private and browser-based.

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Why Use PlayWithJSON?

  • Generate idiomatic PostgreSQL CREATE TABLE DDL with schemas
  • Automatic detection of SERIAL / BIGSERIAL primary keys and UUIDs
  • Support for PostgreSQL native 1D arrays (TEXT[], INTEGER[])
  • Support for JSONB and JSON document column types
  • 100% client-side execution with zero server telemetry

Key Features of PostgreSQL Table Generator

DDL & INSERT Statements

Generates CREATE TABLE queries alongside PostgreSQL-formatted INSERT statements with array literals.

JSONB Column Support

Nested JSON structures and heterogeneous arrays are automatically cast to PostgreSQL JSONB.

Native Postgres Arrays

Homogeneous string or numeric arrays convert to native PostgreSQL typed arrays (e.g. TEXT[]).

Schema & Table Customization

Customize schema prefix (public, my_schema), table name, and primary key column.

UUID & Timestamp Detection

Standard UUID formats and ISO-8601 timestamps are mapped to UUID and TIMESTAMPTZ.

Export to .sql File

Copy directly or download as a .sql file ready for psql, pgAdmin, Supabase, or Neon.

How to Convert JSON to PostgreSQL

1

Paste JSON / JSON5

Paste a JSON object, list of records, or an API payload into the editor.

2

Choose Schema & Table

Configure schema name (default: public), table name, and primary key.

3

Toggle Options

Toggle INSERT statements, JSONB mode, or double-quote identifiers.

4

Copy or Download

Copy the generated PostgreSQL script or download schema.sql.

JSON to PostgreSQL Example

JSON (Input)
[ { "id": 1, "user_uuid": "550e8400-e29b-41d4-a716-446655440000", "name": "Asha", "roles": ["admin", "editor"], "settings": { "dark_mode": true }, "created_at": "2026-10-30T10:00:00Z" } ]
PostgreSQL SQL (Output)
1-- PostgreSQL Table Schema generated from JSON
2CREATE TABLE IF NOT EXISTS public.users (
3 id SERIAL PRIMARY KEY,
4 user_uuid UUID,
5 name VARCHAR(255),
6 roles TEXT[],
7 settings JSONB,
8 created_at TIMESTAMPTZ
9);
10
11-- Sample Data Insertion
12INSERT INTO public.users (user_uuid, name, roles, settings, created_at)
13VALUES
14('550e8400-e29b-41d4-a716-446655440000', 'Asha', ARRAY['admin', 'editor'], '{"dark_mode":true}'::jsonb, '2026-10-30T10:00:00Z');

Schema Validation Rules

Invalid JSON Structure
112345
PostgreSQL generation expects a JSON object or array of objects.
Valid JSON Object
1{
2 "id": 1,
3 "title": "Postgres Guide"
4}

Supported PostgreSQL Types

SERIAL and BIGSERIAL primary keys
UUID data type validation and inference
Native typed arrays (TEXT[], INTEGER[], BOOLEAN[])
JSONB and JSON document column types
TIMESTAMPTZ, DATE, and TIME timestamp formats
NUMERIC, INTEGER, and BIGINT numbers
Automatic sequence handling in INSERTs
Compatible with PostgreSQL 12+, Supabase, Neon, and AWS RDS
100% private in-browser code execution
Frequently Asked Questions

Frequently Asked Questions about JSON to PostgreSQL

JSONB is PostgreSQL’s binary JSON format which supports indexing (GIN indexes), faster lookups, and rich operators (@>, ?). You can switch to standard JSON using the options bar.

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