Enums — ASL

Enum types

Enums are stored as TEXT with a named CHECK (col IN (...)) constraint (chk_<table>_<col>_enum) restricting the column to the declared values.

enum Role { Admin, Member, Guest }

Use an enum as a property type. Reference an enum value in a default with the qualified Enum.Member form (a quoted literal 'Member' is also accepted); the value is validated against the enum’s declaration at generate time:

type User {
  required role: Role { default := Role.Member; };
}

This emits "role" TEXT NOT NULL DEFAULT 'Member' CONSTRAINT "chk_user_role_enum" CHECK ("role" IN ('Admin', 'Member', 'Guest')). Generated Go/TS code uses the enum type for the field (Role) rather than a plain string — for model structs, query parameters, and query result columns alike (including columns pulled in by a * splat and inside nested sub-select rows).