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SQL to TypeScript

Convert SQL table schemas to TypeScript interfaces and types automatically

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About This Tool

Convert SQL table schemas to TypeScript interfaces and types automatically. Paste your CREATE TABLE statements and generate clean TypeScript type definitions with proper type mapping, nullable indicators, and export statements.

Key Features

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Use Cases

sql typescript converter interface type database

Frequently Asked Questions

What SQL dialects are supported?

The tool supports standard SQL DDL syntax and is compatible with MySQL, PostgreSQL, SQLite, and SQL Server CREATE TABLE statements. It handles common data types across these dialects.

How are SQL types mapped to TypeScript?

Common SQL types are mapped to appropriate TypeScript types. For example, VARCHAR and TEXT map to string, INT and BIGINT map to number, BOOLEAN maps to boolean, and DATETIME maps to Date or string.

Does it generate interfaces or types?

The tool generates TypeScript interfaces by default, which define the shape of each table row as an object type. Interfaces are preferred as they support declaration merging and are more idiomatic for object shapes in TypeScript.

How does it handle optional (nullable) columns?

Columns defined with NOT NULL become required properties, while nullable columns are marked with the optional modifier (?). This accurately reflects the database schema constraints in the generated TypeScript types.

Can I generate types for specific SQL dialects?

Yes. The tool supports MySQL, PostgreSQL, SQLite, and SQL Server CREATE TABLE statements. Select your dialect to ensure proper type mapping, as each database uses slightly different naming conventions for data types.