Visual Scheme Builder
Generated DDL SQL
About the SQL Table Generator
Designing databases is a critical step in building robust software solutions. The Online SQL Table Generator simplifies this process by providing a feature-rich, interactive visual builder for database table schemas. Whether you are an experienced database administrator, a full-stack engineer, or a novice learning to design systems, this tool eliminates the mundane task of manually writing SQL CREATE TABLE DDL statements by hand.
The visual interface lets you add or remove fields, adjust data types, configure advanced field properties, define primary keys, and assign validation constraints (like NOT NULL and UNIQUE) on the fly. The output panel formats the DDL statement with syntax coloring for instant copying or download as a script file.
How to Use This Tool
Define your columns
Add columns and set each name, data type, length, and default value.
Set constraints and dialect
Toggle primary key, auto-increment, not null, and unique, then pick MySQL, PostgreSQL, SQLite, or MS SQL Server.
Copy or download the SQL
The CREATE TABLE statement updates live — copy it to your clipboard or download it as a .sql file.
Benefits of Using This Tool
Instant Output Rendering
The CREATE TABLE schema auto-generates instantly as you type column names, select data types, or toggle keys.
Multi-Dialect Compatibility
Visual schemas translate natively into MySQL, PostgreSQL, SQLite, and Microsoft SQL Server syntax.
Visual Constraint Configuration
Manage primary keys, auto-increments, defaults, unsigned digits, null constraints, and unique attributes via simple checkboxes.
Zero-Latency Security
The visual parser runs entirely client-side in your browser, so no table columns, names, or schemas are ever sent to a server.
Export & Download
Instantly copy generated DDL to your clipboard or download it as a runnable .sql file for database migrations.
Dialect Configurations and Constraints
MySQL Dialect: Uses backtick `table` encapsulation. Supports UNSIGNED and AUTO_INCREMENT modifiers, and a rich palette of INT/VARCHAR data types.
PostgreSQL Dialect: Uses double-quote "table" escaping. Auto-increment columns are mapped to Postgres numeric sequence shortcuts like SERIAL, BIGSERIAL, or SMALLSERIAL.
SQLite Dialect: Uses simplified type affinity. Combines auto-increment and identity behavior using the INTEGER PRIMARY KEY AUTOINCREMENT specification.
MS SQL Server Dialect: Applies square-bracket [table] escaping. Auto-increment identifiers use the standard IDENTITY(1,1) column modifier.