Table Structure Generator
Design optimized database table structures instantly
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Which column type did you pick for that price field, and are you sure it was right? How many of your tables have a text column doing the job of a date? Table design is cheap on day one and expensive on day four hundred.
Short answer: Table Structure Generator replaces the hour you would spend arguing with yourself over column types and key names. Describe what you are storing and a runnable table definition comes back, with the keys, indexes and constraints already in it.
What is Table Structure Generator?
Table Structure Generator takes a description of what you are storing and writes the table back as real SQL. You say what the records are and how they relate. It picks the types, the keys and the indexes, and explains those choices when you ask.
It writes text and nothing else. No database is contacted and no table is created. You read the definition, fix what does not fit, then run it yourself.
How Does Table Structure Generator Work?
Describe your data in the prompt box, then open the advanced options. Database is the setting to fix first, because MySQL and PostgreSQL do not agree on types. Output Type belongs on Schema here. Format on SQL gives you something to run, and Code + Comments keeps the reasoning beside it.
Complexity starts on Standard. Include Indexes and Add Constraints are already on, so foreign keys and not null rules come as standard, and Custom Instructions carries naming rules such as snake case columns.
Worth switching on Include Sample Data is off by default. Turn it on for a handful of insert rows, the fastest way to see whether the shape really holds your data.
Building An Orders Table From One Paragraph
Describe it like this: an orders table for a shop, each order belongs to one customer, has a status moving from pending to paid to shipped, stores a total in pounds, and is queried by customer and by date. Database is MySQL, Output Type is Schema.
CREATE TABLE orders (
id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
customer_id BIGINT UNSIGNED NOT NULL,
status VARCHAR(20) NOT NULL DEFAULT 'pending',
total_pence INT UNSIGNED NOT NULL,
...Notice what the detail bought you. Money became an integer of pence, not a float. Status got a default. The customer link became a real foreign key, and the fields you query by became indexes.
Details That Change The Columns You Get
Vague input gives a generic table. These four details change it every time.
| Add this to your description | What changes in the table |
|---|---|
| Roughly how many rows you expect | Key sizes and indexes fit real volume |
| How a record ends its life | A soft delete or status column, not deletions |
| Which fields you filter and sort by | Those become indexes rather than an afterthought |
| The currency or unit involved | Money lands in an exact type, never a float |
From Definition To A Live Table
Run the definition on a copy of your database first, then insert a few real records before you trust it. Check the character set and storage engine, which usually come from your server. Once the table exists, the SQL Generator is the natural next stop for the queries that read from it.
Where it helps
- Turns a rough idea into a runnable definition in one pass
- Adds the keys and constraints you would bolt on later
- Speaks the dialect of the database you actually use
Where you still decide
- It cannot see your existing schema, so names may clash
- Index choices are guesses until you measure them on real data
- Nothing runs here, so the definition is untested until you use it
Nothing gates this tool: it is free, no account is asked for, and you choose the AI model behind each generation. Table Structure Generator is one of the EizTools database tools, each with its own options panel rather than a shared settings box. Recent generations stay in the activity history, which helps when comparing two designs.
Frequently Asked Questions
Does it matter which database I pick?
More than anything else in the panel. Auto increment syntax, text types and the way money is stored all differ, so set Database to the engine you really run rather than leaving it blank.
Will it create the table in my database?
No. It writes the definition as text. There is no connection to any database and no credentials involved, so you copy the output and run it yourself when you are happy.
Can I get a migration file instead of raw SQL?
Yes. Change Output Type from Schema to Migration and name your framework in the prompt. You still review and run the file yourself, ideally against a copy of the database first.
What if I do not know which column types I need?
Describe the data in ordinary words, such as a short status label or an amount of money. Set Complexity to Simple and Format to Explained, and the reasoning comes back with the types.
A table designed carefully in ten minutes saves a migration you would rather not write in a year. Table Structure Generator gets you to that first draft fast, with the keys and constraints already argued for. Describe your data in the box above.
Sabir Bepari
Founder of EizTools and a passionate AI enthusiast dedicated to building practical, user-friendly AI tools that simplify everyday tasks.
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