holocron 0.2.0

Declarative schema & query compiler — one YAML as the source of truth for SQL schema and a type-checked query catalog.
Documentation 
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# Should fail: the select references alias `x`, which was never declared in
# `from:` or `join:`. Caught by L3 (resolve views) — exit 1.
#
# Run: cargo run -- samples/error_unknown_alias.yml

tables:
  - name: tasks
    columns:
      task_id: { type: uuid }
      title:   { type: text }
    primary_key: { columns: [task_id] }

views:
  - name: open_tasks
    from: { table: tasks, as: t }
    select:
      - { column: task_id, from: x }   # alias `x` not declared