{
  "$id": "https://schemas.mapi.dev/v1/api-ColumnProfile.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "description": "What the browser (DuckDB-WASM/papaparse preview) or an ingest profile knows about a\ncolumn. ``name`` and ``sample`` are user data: render them as text only.",
  "examples": [
    {
      "dtype": "number",
      "max": 98312.0,
      "min": 1520.5,
      "n_distinct": 1012,
      "n_rows": 1040,
      "name": "revenue_eur"
    },
    {
      "detected_freq": "W-SUN",
      "dtype": "date",
      "max_date": "2025-12-28",
      "min_date": "2024-01-07",
      "n_distinct": 104,
      "n_rows": 1040,
      "name": "week"
    }
  ],
  "properties": {
    "detected_freq": {
      "anyOf": [
        {
          "maxLength": 16,
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "examples": [
        "W-SUN",
        "D",
        "MS"
      ],
      "title": "Detected Freq"
    },
    "dtype": {
      "enum": [
        "number",
        "integer",
        "string",
        "date",
        "boolean"
      ],
      "title": "Dtype",
      "type": "string"
    },
    "max": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Max"
    },
    "max_date": {
      "anyOf": [
        {
          "maxLength": 40,
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Max Date"
    },
    "min": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Min"
    },
    "min_date": {
      "anyOf": [
        {
          "maxLength": 40,
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Min Date"
    },
    "monotonic": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Values never decrease in file order (dates of a single series, trip numbers); repeated panels of dates are not monotonic",
      "title": "Monotonic"
    },
    "n_distinct": {
      "anyOf": [
        {
          "minimum": 0,
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "N Distinct"
    },
    "n_missing": {
      "default": 0,
      "minimum": 0,
      "title": "N Missing",
      "type": "integer"
    },
    "n_rows": {
      "minimum": 0,
      "title": "N Rows",
      "type": "integer"
    },
    "name": {
      "maxLength": 256,
      "minLength": 1,
      "title": "Name",
      "type": "string"
    },
    "origin": {
      "anyOf": [
        {
          "enum": [
            "column",
            "mff_variable",
            "dim",
            "variable"
          ],
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Where the profile comes from: a table column, a VariableName of an MFF table, or a dim/variable of a stored dataset",
      "title": "Origin"
    },
    "sample": {
      "items": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "integer"
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "maxItems": 20,
      "title": "Sample",
      "type": "array"
    }
  },
  "required": [
    "name",
    "dtype",
    "n_rows"
  ],
  "title": "ColumnProfile",
  "type": "object",
  "x-mapi-contract-version": "0.2"
}