{
  "schema": {
    "properties": {
      "aggregate": {
        "description": "Aggregation operator.Only required for simple expression types.",
        "enum": ["AVG", "COUNT", "COUNT_DISTINCT", "MAX", "MIN", "SUM"],
        "type": "string"
      },
      "column": {
        "properties": {
          "column_name": {
            "description": "The name of the target column",
            "example": "mycol",
            "type": "string"
          },
          "type": {
            "description": "Type of target column",
            "example": "BIGINT",
            "type": "string"
          }
        },
        "type": "object",
        "title": "ChartDataColumn"
      },
      "expressionType": {
        "description": "Simple or SQL metric",
        "enum": ["SIMPLE", "SQL"],
        "example": "SQL",
        "type": "string"
      },
      "hasCustomLabel": {
        "description": "When false, the label will be automatically generated based on the aggregate expression. When true, a custom label has to be specified.",
        "example": true,
        "type": "boolean"
      },
      "isExtra": {
        "description": "Indicates if the filter has been added by a filter component as opposed to being a part of the original query.",
        "type": "boolean"
      },
      "label": {
        "description": "Label for the metric. Is automatically generated unlesshasCustomLabel is true, in which case label must be defined.",
        "example": "Weighted observations",
        "type": "string"
      },
      "optionName": {
        "description": "Unique identifier. Can be any string value, as long as all metrics have a unique identifier. If undefined, a random namewill be generated.",
        "example": "metric_aec60732-fac0-4b17-b736-93f1a5c93e30",
        "type": "string"
      },
      "sqlExpression": {
        "description": "The metric as defined by a SQL aggregate expression. Only required for SQL expression type.",
        "example": "SUM(weight * observations) / SUM(weight)",
        "type": "string"
      },
      "timeGrain": {
        "description": "Optional time grain for temporal filters",
        "example": "PT1M",
        "type": "string"
      }
    },
    "required": ["expressionType"],
    "type": "object",
    "title": "ChartDataAdhocMetricSchema"
  },
  "schemaType": "response"
}