Azure: Improved column handling in logs query builder (#114667)

* Add parameter type field

* Use parameterType to filter columns for aggregation funcs

* Add tests for aggregate components

packages/grafana-schema/src/raw/composable/azuremonitor/dataquery/x/AzureMonitorDataQuery_types.gen.ts

@@ -329,8 +329,17 @@ export enum BuilderQueryEditorOrderByOptions {
   Desc = 'desc',
 }
 
+export enum BuilderQueryEditorReduceParameterTypes {
+  Generic = 'generic',
+  Numeric = 'numeric',
+}
+
 export interface BuilderQueryEditorProperty {
   name: string;
+  /**
+   * Optional parameter type for function properties
+   */
+  parameterType?: BuilderQueryEditorReduceParameterTypes;
   type: BuilderQueryEditorPropertyType;
 }
 

pkg/tsdb/azuremonitor/kinds/dataquery/types_dataquery_gen.go

@@ -223,6 +223,8 @@ func NewBuilderQueryEditorPropertyExpression() *BuilderQueryEditorPropertyExpres
 type BuilderQueryEditorProperty struct {
 	Type BuilderQueryEditorPropertyType `json:"type"`
 	Name string                         `json:"name"`
+	// Optional parameter type for function properties
+	ParameterType *BuilderQueryEditorReduceParameterTypes `json:"parameterType,omitempty"`
 }
 
 // NewBuilderQueryEditorProperty creates a new BuilderQueryEditorProperty object.
@@ -242,6 +244,13 @@ const (
 	BuilderQueryEditorPropertyTypeInterval BuilderQueryEditorPropertyType = "interval"
 )
 
+type BuilderQueryEditorReduceParameterTypes string
+
+const (
+	BuilderQueryEditorReduceParameterTypesGeneric BuilderQueryEditorReduceParameterTypes = "generic"
+	BuilderQueryEditorReduceParameterTypesNumeric BuilderQueryEditorReduceParameterTypes = "numeric"
+)
+
 type BuilderQueryEditorExpressionType string
 
 const (

public/app/plugins/datasource/azuremonitor/components/LogsQueryBuilder/AggregateItem.test.tsx

@@ -0,0 +1,191 @@
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+
+import {
+  BuilderQueryEditorExpressionType,
+  BuilderQueryEditorPropertyType,
+  BuilderQueryEditorReduceExpression,
+  BuilderQueryEditorReduceParameterTypes,
+} from '../../dataquery.gen';
+
+import AggregateItem from './AggregateItem';
+
+describe('AggregateItem', () => {
+  const mockColumns = [
+    { label: 'TimeGenerated', value: 'TimeGenerated' },
+    { label: 'Level', value: 'Level' },
+    { label: 'Message', value: 'Message' },
+  ];
+
+  const mockTemplateVariables = { label: '$variable', value: '$variable' };
+
+  const defaultAggregate: BuilderQueryEditorReduceExpression = {
+    reduce: {
+      name: 'sum',
+      type: BuilderQueryEditorPropertyType.Function,
+      parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+    },
+    property: {
+      name: 'TimeGenerated',
+      type: BuilderQueryEditorPropertyType.String,
+    },
+  };
+
+  const defaultProps = {
+    aggregate: defaultAggregate,
+    columns: mockColumns,
+    onChange: jest.fn(),
+    onDelete: jest.fn(),
+    templateVariableOptions: mockTemplateVariables,
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('renders aggregate function select (with column field)', () => {
+    render(<AggregateItem {...defaultProps} />);
+    expect(screen.getByLabelText('Aggregate function')).toBeInTheDocument();
+    expect(screen.getByLabelText('Column')).toBeInTheDocument();
+  });
+
+  it('does not render column select for count aggregates', () => {
+    const countAggregate = {
+      ...defaultAggregate,
+      reduce: {
+        name: 'count',
+        type: BuilderQueryEditorPropertyType.Function,
+        parameterType: BuilderQueryEditorReduceParameterTypes.Generic,
+      },
+    };
+    render(<AggregateItem {...defaultProps} aggregate={countAggregate} />);
+    expect(screen.queryByLabelText('Column')).not.toBeInTheDocument();
+  });
+
+  it('renders percentile input and OF label for percentile aggregate', () => {
+    const percentileAggregate: BuilderQueryEditorReduceExpression = {
+      reduce: {
+        name: 'percentile',
+        type: BuilderQueryEditorPropertyType.Function,
+        parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+      },
+      parameters: [
+        {
+          type: BuilderQueryEditorExpressionType.Function_parameter,
+          fieldType: BuilderQueryEditorPropertyType.Number,
+          value: '95',
+        },
+        {
+          type: BuilderQueryEditorExpressionType.Function_parameter,
+          fieldType: BuilderQueryEditorPropertyType.String,
+          value: 'TimeGenerated',
+        },
+      ],
+      property: {
+        name: 'TimeGenerated',
+        type: BuilderQueryEditorPropertyType.String,
+      },
+    };
+    render(<AggregateItem {...defaultProps} aggregate={percentileAggregate} />);
+    expect(screen.getByDisplayValue('95')).toBeInTheDocument();
+    expect(screen.getByText('OF')).toBeInTheDocument();
+  });
+
+  it('calls onChange when aggregate function changes', async () => {
+    render(<AggregateItem {...defaultProps} />);
+
+    const select = screen.getByLabelText('Aggregate function');
+    await userEvent.click(select);
+
+    const avgOption = await screen.findByText('avg');
+    await userEvent.click(avgOption);
+
+    expect(defaultProps.onChange).toHaveBeenCalledWith(
+      expect.objectContaining({
+        reduce: expect.objectContaining({
+          name: 'avg',
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        }),
+      })
+    );
+  });
+
+  it('calls onChange when column changes', async () => {
+    render(<AggregateItem {...defaultProps} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+    const levelOption = await screen.findByText('Level');
+    await userEvent.click(levelOption);
+
+    expect(defaultProps.onChange).toHaveBeenCalledWith(
+      expect.objectContaining({
+        property: expect.objectContaining({
+          name: 'Level',
+        }),
+      })
+    );
+  });
+
+  it('calls onChange when percentile value changes', async () => {
+    const percentileAggregate: BuilderQueryEditorReduceExpression = {
+      reduce: {
+        name: 'percentile',
+        type: BuilderQueryEditorPropertyType.Function,
+        parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+      },
+      parameters: [
+        {
+          type: BuilderQueryEditorExpressionType.Function_parameter,
+          fieldType: BuilderQueryEditorPropertyType.Number,
+          value: '95',
+        },
+        {
+          type: BuilderQueryEditorExpressionType.Function_parameter,
+          fieldType: BuilderQueryEditorPropertyType.String,
+          value: 'TimeGenerated',
+        },
+      ],
+    };
+    render(<AggregateItem {...defaultProps} aggregate={percentileAggregate} />);
+
+    const percentileInput = screen.getByDisplayValue('95');
+    await userEvent.clear(percentileInput);
+    await userEvent.type(percentileInput, '99');
+
+    expect(defaultProps.onChange).toHaveBeenCalledWith(
+      expect.objectContaining({
+        parameters: expect.arrayContaining([expect.objectContaining({ value: '99' })]),
+      })
+    );
+  });
+
+  it('calls onDelete when delete button clicked', async () => {
+    render(<AggregateItem {...defaultProps} />);
+
+    const deleteButton = screen.getByLabelText('Remove');
+    await userEvent.click(deleteButton);
+    expect(defaultProps.onDelete).toHaveBeenCalledTimes(1);
+  });
+
+  it('includes template variables in column options', async () => {
+    render(<AggregateItem {...defaultProps} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+    expect(await screen.findByText('$variable')).toBeInTheDocument();
+  });
+
+  it('handles array of template variables', async () => {
+    const arrayTemplateVars = [
+      { label: '$var1', value: '$var1' },
+      { label: '$var2', value: '$var2' },
+    ];
+    render(<AggregateItem {...defaultProps} templateVariableOptions={arrayTemplateVars[0]} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+
+    expect(await screen.findByText('$var1')).toBeInTheDocument();
+  });
+});

public/app/plugins/datasource/azuremonitor/components/LogsQueryBuilder/AggregateItem.tsx

@@ -9,6 +9,7 @@ import {
   BuilderQueryEditorExpressionType,
   BuilderQueryEditorPropertyType,
   BuilderQueryEditorReduceExpression,
+  BuilderQueryEditorReduceParameterTypes,
 } from '../../dataquery.gen';
 
 import { aggregateOptions, inputFieldSize } from './utils';
@@ -65,8 +66,16 @@ const AggregateItem: React.FC<AggregateItemProps> = ({
   };
 
   const handleAggregateChange = (funcName?: string) => {
+    const functionParameterType =
+      aggregateOptions.find((option) => option.value === (funcName || ''))?.parameterType ||
+      BuilderQueryEditorReduceParameterTypes.Generic;
+
     updateAggregate({
-      reduce: { name: funcName || '', type: BuilderQueryEditorPropertyType.Function },
+      reduce: {
+        name: funcName || '',
+        type: BuilderQueryEditorPropertyType.Function,
+        parameterType: functionParameterType,
+      },
     });
   };
 

public/app/plugins/datasource/azuremonitor/components/LogsQueryBuilder/AggregationSection.test.tsx

@@ -0,0 +1,293 @@
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+
+import {
+  AzureQueryType,
+  BuilderQueryEditorExpressionType,
+  BuilderQueryEditorPropertyType,
+  BuilderQueryEditorReduceExpression,
+  BuilderQueryEditorReduceParameterTypes,
+} from '../../dataquery.gen';
+import { AzureMonitorQuery } from '../../types/query';
+
+import { AggregateSection } from './AggregationSection';
+
+describe('AggregationSection', () => {
+  const mockAllColumns = [
+    { name: 'TimeGenerated', type: 'datetime' },
+    { name: 'Level', type: 'string' },
+    { name: 'Count', type: 'int' },
+    { name: 'Duration', type: 'real' },
+  ];
+
+  const mockTemplateVariables = { label: '$variable', value: '$variable' };
+
+  const createMockQuery = (reduce?: BuilderQueryEditorReduceExpression[]): AzureMonitorQuery => ({
+    refId: 'A',
+    queryType: AzureQueryType.LogAnalytics,
+    azureLogAnalytics: {
+      builderQuery: {
+        from: {
+          type: BuilderQueryEditorExpressionType.Property,
+          property: { type: BuilderQueryEditorPropertyType.String, name: 'AppRequests' },
+        },
+        columns: {
+          type: BuilderQueryEditorExpressionType.Property,
+          columns: [],
+        },
+        reduce: {
+          type: BuilderQueryEditorExpressionType.Reduce,
+          expressions: reduce || [],
+        },
+        where: {
+          type: BuilderQueryEditorExpressionType.And,
+          expressions: [],
+        },
+        groupBy: {
+          type: BuilderQueryEditorExpressionType.Group_by,
+          expressions: [],
+        },
+      },
+    },
+  });
+
+  const defaultProps = {
+    query: createMockQuery(),
+    allColumns: mockAllColumns,
+    templateVariableOptions: mockTemplateVariables,
+    buildAndUpdateQuery: jest.fn(),
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('renders the aggregate section', () => {
+    render(<AggregateSection {...defaultProps} />);
+    expect(screen.getByTestId('aggregate-section')).toBeInTheDocument();
+  });
+
+  it('renders empty list when no aggregates exist', () => {
+    render(<AggregateSection {...defaultProps} />);
+    const addButton = screen.getByRole('button', { name: /add/i });
+    expect(addButton).toBeInTheDocument();
+  });
+
+  it('renders existing aggregates', () => {
+    const existingAggregates: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        },
+        property: {
+          name: 'Count',
+          type: BuilderQueryEditorPropertyType.String,
+        },
+      },
+      {
+        reduce: {
+          name: 'avg',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        },
+        property: {
+          name: 'Duration',
+          type: BuilderQueryEditorPropertyType.String,
+        },
+      },
+    ];
+
+    const queryWithAggregates = createMockQuery(existingAggregates);
+    render(<AggregateSection {...defaultProps} query={queryWithAggregates} />);
+
+    expect(screen.getAllByLabelText('Aggregate function')).toHaveLength(2);
+  });
+
+  it('calls buildAndUpdateQuery when aggregate is added', async () => {
+    render(<AggregateSection {...defaultProps} />);
+
+    const addButton = screen.getByRole('button', { name: /add/i });
+    await userEvent.click(addButton);
+
+    expect(defaultProps.buildAndUpdateQuery).toHaveBeenCalledWith({
+      reduce: expect.arrayContaining([expect.objectContaining({})]),
+    });
+  });
+
+  it('calls buildAndUpdateQuery when aggregate is deleted', async () => {
+    const existingAggregates: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        },
+        property: {
+          name: 'Count',
+          type: BuilderQueryEditorPropertyType.String,
+        },
+      },
+    ];
+    const avgAggregate = {
+      reduce: {
+        name: 'avg',
+        type: BuilderQueryEditorPropertyType.Function,
+        parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+      },
+      property: {
+        name: 'Duration',
+        type: BuilderQueryEditorPropertyType.String,
+      },
+    };
+    existingAggregates.push(avgAggregate);
+
+    const queryWithAggregates = createMockQuery(existingAggregates);
+    render(<AggregateSection {...defaultProps} query={queryWithAggregates} />);
+
+    const deleteButton = (await screen.findAllByLabelText('Remove'))[0];
+    await userEvent.click(deleteButton);
+
+    expect(defaultProps.buildAndUpdateQuery).toHaveBeenCalledWith({
+      reduce: [avgAggregate],
+    });
+    expect(screen.getAllByLabelText('Aggregate function')).toHaveLength(1);
+  });
+
+  it('provides numeric columns for numeric aggregate functions', async () => {
+    const numericAggregate: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        },
+      },
+    ];
+
+    const queryWithAggregate = createMockQuery(numericAggregate);
+    render(<AggregateSection {...defaultProps} query={queryWithAggregate} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+
+    expect(await screen.getByText('Count')).toBeInTheDocument();
+    expect(await screen.getByText('Duration')).toBeInTheDocument();
+
+    expect(screen.queryByText('Level')).not.toBeInTheDocument();
+  });
+
+  it('provides all columns for generic aggregate functions', async () => {
+    const genericAggregate: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'min',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Generic,
+        },
+      },
+    ];
+
+    const queryWithAggregate = createMockQuery(genericAggregate);
+    render(<AggregateSection {...defaultProps} query={queryWithAggregate} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+
+    expect(await screen.getByText('TimeGenerated')).toBeInTheDocument();
+    expect(await screen.getByText('Level')).toBeInTheDocument();
+    expect(await screen.getByText('Count')).toBeInTheDocument();
+    expect(await screen.getByText('Duration')).toBeInTheDocument();
+  });
+
+  it('resets aggregates when table changes', () => {
+    const existingAggregates: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Numeric,
+        },
+        property: {
+          name: 'Count',
+          type: BuilderQueryEditorPropertyType.String,
+        },
+      },
+    ];
+
+    const queryWithAggregates = createMockQuery(existingAggregates);
+    const { rerender } = render(<AggregateSection {...defaultProps} query={queryWithAggregates} />);
+
+    const newQuery = createMockQuery(existingAggregates);
+    newQuery.azureLogAnalytics!.builderQuery!.from!.property.name = 'AppEvents';
+
+    rerender(<AggregateSection {...defaultProps} query={newQuery} />);
+
+    const addButton = screen.getByRole('button', { name: /add/i });
+    expect(addButton).toBeInTheDocument();
+  });
+
+  it('uses selected columns when available', async () => {
+    const aggregate: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Generic,
+        },
+      },
+    ];
+
+    const query = createMockQuery(aggregate);
+    query.azureLogAnalytics!.builderQuery = {
+      ...query.azureLogAnalytics!.builderQuery,
+      columns: {
+        columns: ['TimeGenerated', 'Level'],
+        type: BuilderQueryEditorExpressionType.Property,
+      },
+    };
+
+    render(<AggregateSection {...defaultProps} query={query} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+
+    expect(await screen.getByText('TimeGenerated')).toBeInTheDocument();
+    expect(await screen.getByText('Level')).toBeInTheDocument();
+
+    expect(screen.queryByText('Count')).not.toBeInTheDocument();
+    expect(screen.queryByText('Duration')).not.toBeInTheDocument();
+  });
+
+  it('falls back to all columns when no columns selected', async () => {
+    const aggregate: BuilderQueryEditorReduceExpression[] = [
+      {
+        reduce: {
+          name: 'sum',
+          type: BuilderQueryEditorPropertyType.Function,
+          parameterType: BuilderQueryEditorReduceParameterTypes.Generic,
+        },
+      },
+    ];
+
+    const query = createMockQuery(aggregate);
+    query.azureLogAnalytics!.builderQuery = {
+      ...query.azureLogAnalytics!.builderQuery,
+      columns: {
+        columns: [],
+        type: BuilderQueryEditorExpressionType.Property,
+      },
+    };
+
+    render(<AggregateSection {...defaultProps} query={query} />);
+
+    const columnSelect = screen.getByLabelText('Column');
+    await userEvent.click(columnSelect);
+
+    expect(await screen.getByText('TimeGenerated')).toBeInTheDocument();
+    expect(await screen.getByText('Level')).toBeInTheDocument();
+    expect(await screen.getByText('Count')).toBeInTheDocument();
+    expect(await screen.getByText('Duration')).toBeInTheDocument();
+  });
+});

public/app/plugins/datasource/azuremonitor/components/LogsQueryBuilder/AggregationSection.tsx

@@ -4,12 +4,12 @@ import { SelectableValue } from '@grafana/data';
 import { t } from '@grafana/i18n';
 import { EditorField, EditorFieldGroup, EditorList, EditorRow } from '@grafana/plugin-ui';
 
-import { BuilderQueryEditorReduceExpression } from '../../dataquery.gen';
+import { BuilderQueryEditorReduceExpression, BuilderQueryEditorReduceParameterTypes } from '../../dataquery.gen';
 import { AzureLogAnalyticsMetadataColumn } from '../../types/logAnalyticsMetadata';
 import { AzureMonitorQuery } from '../../types/query';
 
 import AggregateItem from './AggregateItem';
-import { BuildAndUpdateOptions } from './utils';
+import { BuildAndUpdateOptions, isNumericColumn } from './utils';
 
 interface AggregateSectionProps {
   query: AzureMonitorQuery;
@@ -43,6 +43,10 @@ export const AggregateSection: React.FC<AggregateSectionProps> = ({
   const availableColumns: Array<SelectableValue<string>> = builderQuery?.columns?.columns?.length
     ? builderQuery.columns.columns.map((col) => ({ label: col, value: col }))
     : allColumns.map((col) => ({ label: col.name, value: col.name }));
+  const numericColumns: Array<SelectableValue<string>> = allColumns.filter(isNumericColumn).map((col) => ({
+    label: col.name,
+    value: col.name,
+  }));
 
   const onChange = (newItems: Array<Partial<BuilderQueryEditorReduceExpression>>) => {
     setAggregates(newItems);
@@ -82,7 +86,12 @@ export const AggregateSection: React.FC<AggregateSectionProps> = ({
             <EditorList
               items={aggregates}
               onChange={onChange}
-              renderItem={makeRenderAggregate(availableColumns, onDeleteAggregate, templateVariableOptions)}
+              renderItem={makeRenderAggregate(
+                availableColumns,
+                numericColumns,
+                onDeleteAggregate,
+                templateVariableOptions
+              )}
             />
           </EditorField>
         </EditorFieldGroup>
@@ -93,6 +102,7 @@ export const AggregateSection: React.FC<AggregateSectionProps> = ({
 
 function makeRenderAggregate(
   availableColumns: Array<SelectableValue<string>>,
+  numericColumns: Array<SelectableValue<string>>,
   onDeleteAggregate: (aggregate: BuilderQueryEditorReduceExpression) => void,
   templateVariableOptions: SelectableValue<string>
 ) {
@@ -105,7 +115,11 @@ function makeRenderAggregate(
         aggregate={item}
         onChange={onChange}
         onDelete={() => onDeleteAggregate(item)}
-        columns={availableColumns}
+        columns={
+          item.reduce?.name && item.reduce.parameterType === BuilderQueryEditorReduceParameterTypes.Numeric
+            ? numericColumns
+            : availableColumns
+        }
         templateVariableOptions={templateVariableOptions}
       />
     );

public/app/plugins/datasource/azuremonitor/components/LogsQueryBuilder/utils.ts

@@ -9,6 +9,7 @@ import {
   BuilderQueryEditorPropertyExpression,
   BuilderQueryEditorPropertyType,
   BuilderQueryEditorReduceExpression,
+  BuilderQueryEditorReduceParameterTypes,
   BuilderQueryEditorWhereExpression,
   BuilderQueryExpression,
 } from '../../dataquery.gen';
@@ -93,12 +94,17 @@ export interface BuildAndUpdateOptions {
 }
 
 export const aggregateOptions = [
-  { label: 'sum', value: 'sum' },
-  { label: 'avg', value: 'avg' },
-  { label: 'percentile', value: 'percentile' },
-  { label: 'count', value: 'count' },
-  { label: 'min', value: 'min' },
-  { label: 'max', value: 'max' },
-  { label: 'dcount', value: 'dcount' },
-  { label: 'stdev', value: 'stdev' },
+  { label: 'sum', value: 'sum', parameterType: BuilderQueryEditorReduceParameterTypes.Numeric },
+  { label: 'avg', value: 'avg', parameterType: BuilderQueryEditorReduceParameterTypes.Numeric },
+  { label: 'percentile', value: 'percentile', parameterType: BuilderQueryEditorReduceParameterTypes.Numeric },
+  { label: 'stdev', value: 'stdev', parameterType: BuilderQueryEditorReduceParameterTypes.Numeric },
+  { label: 'min', value: 'min', parameterType: BuilderQueryEditorReduceParameterTypes.Generic },
+  { label: 'max', value: 'max', parameterType: BuilderQueryEditorReduceParameterTypes.Generic },
+  { label: 'count', value: 'count', parameterType: BuilderQueryEditorReduceParameterTypes.Generic },
+  { label: 'dcount', value: 'dcount', parameterType: BuilderQueryEditorReduceParameterTypes.Generic },
 ];
+
+export const isNumericColumn = (column: AzureLogAnalyticsMetadataColumn): boolean => {
+  const numericTypes = ['decimal', 'int', 'long', 'real'];
+  return numericTypes.includes(column.type);
+};

public/app/plugins/datasource/azuremonitor/dataquery.cue

@@ -175,10 +175,13 @@ composableKinds: DataQuery: {
 				#BuilderQueryEditorExpressionType: "property" | "operator" | "reduce" | "function_parameter" | "group_by" | "or" | "and" | "order_by" @cuetsy(kind="enum", memberNames:"Property|Operator|Reduce|FunctionParameter|GroupBy|Or|And|OrderBy")
 				#BuilderQueryEditorPropertyType:   "number" | "string" | "boolean" | "datetime" | "time_span" | "function" | "interval"               @cuetsy(kind="enum", memberNames:"Number|String|Boolean|Datetime|TimeSpan|Function|Interval")
 				#BuilderQueryEditorOrderByOptions: "asc" | "desc"                                                                                     @cuetsy(kind="enum", memberNames:"Asc|Desc")
+				#BuilderQueryEditorReduceParameterTypes: "generic" | "numeric"                                                                                     @cuetsy(kind="enum", memberNames:"Asc|Desc")
 
 				#BuilderQueryEditorProperty: {
 					type: #BuilderQueryEditorPropertyType
 					name: string
+					// Optional parameter type for function properties
+					parameterType?: #BuilderQueryEditorReduceParameterTypes
 				} @cuetsy(kind="interface")
 
 				#BuilderQueryEditorPropertyExpression: {

public/app/plugins/datasource/azuremonitor/dataquery.gen.ts

@@ -327,8 +327,17 @@ export enum BuilderQueryEditorOrderByOptions {
   Desc = 'desc',
 }
 
+export enum BuilderQueryEditorReduceParameterTypes {
+  Generic = 'generic',
+  Numeric = 'numeric',
+}
+
 export interface BuilderQueryEditorProperty {
   name: string;
+  /**
+   * Optional parameter type for function properties
+   */
+  parameterType?: BuilderQueryEditorReduceParameterTypes;
   type: BuilderQueryEditorPropertyType;
 }