RESULT
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All processing is performed locally in your browser unless the tool explicitly says otherwise.
How to use this calculator
What to enter
Enter or select the following as requested: Table; Key columns. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The output is a SQL statement, schema aid, storage estimate, or database analysis based on the supplied structure and options. Review table and column names, data types, dialect-specific syntax, constraints, and destructive operations before executing generated SQL.
When to use it
Use this to draft, format, inspect, or estimate database structures and queries. Test generated statements in a safe development environment and keep backups before running changes against important data.