Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0

ReferenceErrors

Errors Reads and writes · rule

`query.include_unknown`

Include names no reference to or from the entity.

Area 6, Reads and writes; not declinable; the next step is usually the agent's.

example

type Title = Text {    max_length: 80}entity Book {    id: Uuid    title: Title    subtitle: Title?    available: Bool}type ShelfCard = Output {    pick: [Book.id]    name: Title}query cards() -> List<ShelfCard> {    from: Book    order: [Book.title asc]    limit: 20    include: {        name: Book.title    }}

jadpo checkcheck failed: 1 error, 1 file

error Book.title isn't a reference to or from Book

--> main.jadpo:22:15

   |22 |         name: Book.title   |               ^^^^^^^^^^ not a reference

reason: An include follows a reference: one of Book's own gives the record it points at, and another entity's reference to Book gives the records that point here. No reference leads to or from Book.
next: Add a reference field, or read the records with a query of their own (agent)
rule: query.include_unknown
help: https://jadpo.dev/docs/errors/query.include_unknown

Markdown for agents: /docs/errors/query.include_unknown.md.Built from Jadpo main at aee2e8f.