skills/tableau-workbook-authoring/resources/examples/lod-fixed.json

{
  "_description": "FIXED LOD expression: computes a value at a fixed granularity, independent of view dimensions. Place the calculated column in the datasource columns section.",
  "_feature": "lod,calculated-field",
  "column_in_datasource": {
    "_description": "Define the FIXED LOD calculated field in the datasource > columns section",
    "type": "column",
    "attrs": {
      "caption": "Total Sales per Customer",
      "datatype": "real",
      "name": "[Calculation_LOD_Fixed]",
      "role": "measure",
      "type": "quantitative"
    },
    "children": [
      {
        "type": "calculation",
        "attrs": {
          "class": "tableau",
          "formula": "{ FIXED [Customer Name] : SUM([Sales]) }"
        }
      }
    ]
  },
  "column_instance_in_view": {
    "_description": "Reference the LOD field in datasource-dependencies as a column-instance",
    "type": "column-instance",
    "attrs": {
      "column": "[Calculation_LOD_Fixed]",
      "derivation": "Sum",
      "name": "[sum:Calculation_LOD_Fixed:qk]",
      "pivot": "key",
      "type": "quantitative"
    }
  },
  "lod_variants": {
    "FIXED": "{ FIXED [Dim1], [Dim2] : AGG([Measure]) } — ignores view dims, computes at specified dims",
    "INCLUDE": "{ INCLUDE [Dim] : AGG([Measure]) } — adds extra dim to view granularity",
    "EXCLUDE": "{ EXCLUDE [Dim] : AGG([Measure]) } — removes a dim from view granularity"
  },
  "notes": {
    "formula_syntax": "{ FIXED [DimField] : AGG([Measure]) } — curly braces required",
    "naming_convention": "[Calculation_LOD_Fixed] — use descriptive names with timestamp suffix in production",
    "derivation": "LOD fields typically use Sum derivation in column-instance; the formula itself specifies the aggregation",
    "context_filters": "Context filters (context='true') ARE respected by FIXED LOD; regular filters are not",
    "FIXED_vs_INCLUDE_EXCLUDE": "FIXED ignores all view dimensions; INCLUDE/EXCLUDE modify view grain relatively"
  }
}