SQL to Java: models from a DDL script

What follows is not a mock-up: it is the real output of the generator for the script on the left. You get the same code in the editor under “Codegen → Java”.

The inputschema.sql

CREATE TABLE users (
    id BIGINT NOT NULL PRIMARY KEY,
    email       VARCHAR(255) NOT NULL UNIQUE,
    full_name   VARCHAR(120),
    is_active   BOOLEAN NOT NULL,
    created_at  TIMESTAMP NOT NULL
);

CREATE TABLE orders (
    id BIGINT NOT NULL PRIMARY KEY,
    user_id     BIGINT NOT NULL REFERENCES users(id),
    total       DECIMAL(12,2) NOT NULL,
    note        TEXT,
    placed_at   TIMESTAMP NOT NULL
);

What comes outModels.java

import java.time.LocalDateTime;
import java.math.BigDecimal;

public record Users(
    long            id,
    String          email,
    String          fullName,
    boolean         isActive,
    LocalDateTime   createdAt
) {}

public record Orders(
    long            id,
    long            userId,  // → users.id
    BigDecimal      total,
    String          note,
    LocalDateTime   placedAt
) {}

Open the editor

The script stays in the browser: both parsing and generation run on your machine, nothing goes to a server.

How the types land

in SQL	in the model
`BIGINT`	`long`
`VARCHAR(255)`	`String`
`BOOLEAN`	`boolean`
`TIMESTAMP`	`LocalDateTime`
`DECIMAL(12,2)`	`BigDecimal`
`TEXT`	`String`

Optional field: String
Column name: fullName
Relation: // → users.id

SQL to Java: models from a DDL script

How the types land

Other generation targets

Other databases