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🗄️ SQL ✅ 100% Free ⚡ 4 Dialects

SQL Table Builder

Visually design your database tables — add columns, set data types & constraints, define indexes and foreign keys, and instantly generate CREATE TABLE SQL for MySQL, PostgreSQL, SQLite or SQL Server.

Dialect:
🗄️ Table Designer 0 columns
Table Name
Schema / DB
Engine (MySQL)
Charset (MySQL)
IF NOT EXISTS
⠿ Column Name Data Type PK NN UQ AI
Quick:
📇 Indexes
🔗 Foreign Keys
ColumnRef TableRef ColumnON DELETEON UPDATE
Generated SQL
Constraint Legend
PKPrimary Key
NNNOT NULL
UQUNIQUE
AIAUTO_INCREMENT
FKForeign Key
DFHas Default

Visual SQL Table Builder

The SQL Table Builder lets you design database tables visually without writing SQL from scratch. Add and reorder columns with drag-and-drop, toggle constraints with one click, and get perfectly formatted CREATE TABLE statements instantly.

Supported Dialects

  • MySQL: Full type set including ENUM, SET, JSON, TEXT variants — with ENGINE and CHARSET options
  • PostgreSQL: SERIAL/BIGSERIAL, UUID, JSONB, TIMESTAMPTZ, ARRAY and more
  • SQLite: INTEGER, REAL, TEXT, BLOB and NUMERIC with SQLite-native affinity
  • SQL Server: NVARCHAR, IDENTITY, UNIQUEIDENTIFIER, DATETIME2, XML and more

Features

  • Drag-and-drop column reordering
  • One-click PK, NOT NULL, UNIQUE, AUTO_INCREMENT toggles per column
  • Default values and column comments per column
  • Index builder: INDEX, UNIQUE INDEX, FULLTEXT, SPATIAL, PRIMARY KEY
  • Foreign key builder with ON DELETE / ON UPDATE action selectors
  • Quick-insert presets: id, uuid, created_at, updated_at, deleted_at, status
  • Three ready-made templates: Users, Blog Posts, Orders
  • Syntax-highlighted SQL output and visual schema preview
  • Copy to clipboard and download as .sql file

Database Design Best Practices

  • Always have a primary key — every table needs a reliable way to uniquely identify each row.
  • Add created_at and updated_at — timestamp columns are invaluable for debugging and auditing.
  • Use NOT NULL wherever possible — NULL values complicate queries and indexes.
  • Index foreign key columns — columns used in JOIN conditions should always be indexed.
  • Use DECIMAL for money — never use FLOAT or DOUBLE for financial calculations.

Frequently Asked Questions

A PRIMARY KEY uniquely identifies each row and cannot be NULL. A table can have only one PRIMARY KEY. A UNIQUE constraint also prevents duplicate values but allows NULL. A table can have multiple UNIQUE constraints on different columns.
INT stores values up to about 2 billion. BIGINT stores values up to about 9.2 quintillion. Use INT for most IDs and counters. Use BIGINT only when you expect row counts or values to exceed 2 billion, such as in high-volume event logging.
AUTO_INCREMENT (MySQL) or SERIAL/IDENTITY (PostgreSQL/SQL Server) automatically assigns the next integer value when a new row is inserted. It is the standard way to create auto-generated primary keys, guaranteed to be unique even under concurrent load.
Use VARCHAR(n) when you know the maximum length — for names, emails, URLs. Use TEXT for article bodies, comments, and descriptions of unpredictable length. In PostgreSQL, TEXT and VARCHAR have identical performance. In MySQL, TEXT is stored off-page for very long values.
Yes — the generated SQL is plain text that you can copy, paste, and edit freely in any SQL client or migration file. The builder is a starting point; feel free to add comments, adjust formatting, or combine it with additional ALTER TABLE statements.
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What is SQL Table Builder?

SQL Table Builder is a free online utility designed to help developers, designers, and technical professionals work more efficiently. This tool runs entirely in your browser — no installation required, no data sent to any server.

How to Use SQL Table Builder

  1. Paste or type your input in the editor area above.
  2. Click the action button to process your content.
  3. Copy the output or download the result.

Key Features

  • 100% Free — No registration or payment required.
  • Client-side Processing — Your data never leaves your browser.
  • Instant Results — Get output in milliseconds.
  • No Installation — Works directly in your web browser.
  • Mobile Friendly — Works on phones, tablets, and desktops.

Who Uses SQL Table Builder?

This tool is widely used by web developers, software engineers, data analysts, students, and IT professionals who need a quick and reliable way to process data without setting up complex software environments.

Frequently Asked Questions

Is SQL Table Builder free to use?
Yes, SQL Table Builder is completely free. There are no hidden charges, no subscription fees, and no account required.
Is my data safe when using SQL Table Builder?
Absolutely. All processing happens locally in your browser. No data is uploaded to any server, making it completely private and secure.
Can I use SQL Table Builder on mobile devices?
Yes, SQL Table Builder is fully responsive and works on all modern browsers and devices including smartphones and tablets.
Do I need to install anything to use SQL Table Builder?
No installation is required. Simply open the page in your browser and start using it immediately.
How accurate is SQL Table Builder?
SQL Table Builder uses industry-standard algorithms to ensure accurate and reliable results every time.