Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0
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Reference: Data

Data · rule

data.unique_single_field

Unique rule has only one field.

Area 5, Data; not declinable; the next step is usually the agent's.

example
entity Account {    id: Uuid    handle: Text    unique: {        only_handle: [handle]    }}
text
error: The unique rule `only_handle` has one field --> main.jadpo:6:9  |6 |         only_handle: [handle]  |         ^^^^^^^^^^^ one field  reason: The `unique:` section holds rules over several fields; a single field is made unique in its own block, `handle: ... { unique: true }`.  next: Move it to `handle`'s block as `unique: true` (agent)  rule: data.unique_single_field  help: https://jadpo.dev/docs/errors/data.unique_single_fieldcheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/data.unique_single_field.md.Built from Jadpo main at a707efb.