{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://datenoio.github.io/undatum/schemas/undatum.stats.v1.json",
  "title": "Field statistics",
  "description": "Printed by `undatum stats --json`.",
  "type": "object",
  "properties": {
    "schema": {
      "const": "undatum.stats/1",
      "description": "Result layout"
    },
    "count": {
      "type": "integer",
      "description": "Records profiled"
    },
    "num_fields": {
      "type": "integer",
      "description": "Number of fields"
    },
    "fieldtypes": {
      "type": "object",
      "description": "Field -> detected type"
    },
    "fields": {
      "type": "array",
      "description": "Per-field statistics"
    },
    "dictkeys": {
      "type": "array",
      "description": "Fields with few distinct values"
    },
    "dicts": {
      "type": "object",
      "description": "Value lists of the dictionary fields"
    },
    "debug": {
      "type": "object",
      "description": "Engine diagnostics (engine, timings); not stable"
    }
  },
  "required": [
    "schema",
    "count",
    "num_fields",
    "fieldtypes",
    "fields"
  ]
}