DDL file converter

Convert DDL files between different database formats with syntax validation and constraint preservation

Request Feature / Support

7,372+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

This DDL File Converter tool allows you to upload SQL Data Definition Language (DDL) files and convert them between different database management systems. It supports conversion between MySQL, PostgreSQL, SQL Server, and SQLite formats. The tool parses CREATE TABLE statements, handles columns, data types, constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, CHECK), indexes, and table options. It validates syntax, provides error highlighting, and maintains referential integrity during conversion. You can either upload a .sql file or paste DDL content directly, select source and target database formats, and get properly formatted output with syntax highlighting.

Save your calculation history with a free account

How to Use

Upload a .sql file containing DDL statements or paste DDL content directly into the text area.
Select the source database format (MySQL, PostgreSQL, SQL Server, or SQLite).
Select the target database format you want to convert to.
Choose conversion options like whether to include comments, preserve original formatting, or generate CREATE INDEX statements separately.
Click 'Convert DDL' to process the file.
View the converted DDL in the results section with syntax highlighting and download options.
If there are syntax errors, they will be highlighted with specific error messages.

Frequently Asked Questions

Find Quick Answers

What DDL statements does this converter support?

The converter primarily handles CREATE TABLE statements including columns, data types, constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, CHECK), indexes, and table options. It also handles ALTER TABLE statements for adding constraints and CREATE INDEX statements.

Which database formats are supported?

The tool supports conversion between MySQL, PostgreSQL, Microsoft SQL Server, and SQLite. You can convert from any of these formats to any other supported format.

Does the converter preserve comments and formatting?

Yes, there's an option to preserve comments and original formatting. By default, it generates clean, standardized SQL but you can choose to maintain the original layout and comments from the source file.

What happens if my DDL has syntax errors?

The tool validates syntax and will highlight specific lines with errors. It provides detailed error messages explaining what's wrong (e.g., 'Missing closing parenthesis on line 5' or 'Unsupported data type on line 12').

Can I convert multiple tables at once?

Yes, you can upload a file containing multiple CREATE TABLE statements. The converter will process all valid statements sequentially and output all converted tables in the correct order.

Is there a file size limit?

For client-side processing, very large files may impact browser performance. For files over 1MB, the tool automatically uses server-side processing which has higher limits (typically up to 10MB).

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Currency Converter

Convert currencies instantly with real-time exchange rates and historical data support.

Your Feedback Matters

Help Us to Improve