Dev
Generator für Postgres-Tabellenschemata zum Testen
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.
How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Click Generate to produce a table schema.
- Copy the SQL into a migration or console.
- Adapt the columns to your data model.
- 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.
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