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Mock Postgres Table Schema Generator

Used by developers, writers, and creators worldwide.

A mock Postgres table schema generator produces example PostgreSQL CREATE TABLE statements for testing, learning, and documentation. SQL schema has a precise syntax — column names, types, constraints, defaults, and references — and a realistic sample is the fastest way to learn it or seed a test database. This tool emits a valid CREATE TABLE statement with a primary key, typed columns, constraints, and foreign keys. Click generate and copy it into a migration, a console, or a tutorial. It is ideal for learning SQL DDL, seeding a test schema, and documenting a data model. The statement uses correct PostgreSQL syntax and conventions, so it shows how a serial primary key, typed columns, NOT NULL and UNIQUE constraints, defaults, and foreign-key references fit together. Adapt the table and columns to your own data model before running it against a real database.

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How to use

  1. Choose your options above
  2. Click Generate
  3. Copy your result

Detailed instructions

  1. Click Generate to produce a table schema.
  2. Copy the SQL into a migration or console.
  3. Adapt the columns to your data model.
  4. Run it after tailoring to your needs.

Use Cases

  • •Learning SQL table syntax
  • •Seeding a test database schema
  • •Documenting a data model
  • •Demoing PostgreSQL DDL
  • •Testing a migration tool

Tips

  • →SERIAL makes an auto-increment id.
  • →Use REFERENCES for foreign keys.
  • →NUMERIC suits money values.
  • →Adapt the schema to your data.

FAQ

what does CREATE TABLE define

It defines a database table — its columns, their data types, and constraints like primary keys, NOT NULL, UNIQUE, defaults, and foreign-key references. This sample shows a realistic table with those elements in correct PostgreSQL syntax.

what is a SERIAL primary key

SERIAL is a PostgreSQL shorthand for an auto-incrementing integer column, commonly used for a table's id primary key. Each new row gets the next number automatically, giving every record a unique identifier without manual assignment.

can i run this directly

It is a learning and testing sample. Adapt the table name, columns, and constraints to your own data model first. The syntax is valid PostgreSQL; the specific schema should reflect your real data before you apply it to a database.