> ## Documentation Index > Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt > Use this file to discover all available pages before exploring further. # Gets the possible column headers for a given drillthrough MDX query. The request has the same format as the request for the actual drillthrough query, just the URL changes. > Executes the given MDX query and returns only the query plan. ## OpenAPI ````yaml post /activeviam/pivot/rest/v10/cube/query/mdx/drillthroughheaders openapi: 3.0.0 info: title: Atoti REST services version: 6.1.18-SNAPSHOT servers: - description: Generated server url url: http://localhost:9090 security: [] tags: - description: Implementation of the REST API controller for an ActivePivot database. name: Database REST API - description: > XML for Analysis (XMLA) endpoint for executing MDX queries and OLAP discovery operations. This endpoint implements the XMLA protocol which is used by: - Microsoft Excel and other OLAP clients - Custom BI tools that support XMLA connectivity The endpoint supports both text XML and binary XML formats for improved performance. name: XMLA API - description: Definition of REST API to query data from ActivePivot (V10). name: Query REST API (V10) - description: Definition of REST API to query data from ActivePivot (V9). name: Query REST API (V9) - description: Implementation of the REST Bulk API of the content server (version 8). name: Bulk REST API - description: Implementation of the REST API of the content server. name: Content Server REST API - description: Implementation of the REST API controller for an ActivePivot database. name: Database REST API v9 - description: ' Definition of the REST service returning the list of services exposed by an application.' name: Version REST API - description: Rest Service providing the discovery information. name: Discovery REST API - description: API to access measures information. name: Diagnostics API - description: JSON Web Token (JWT) endpoint. name: JWT API - description: > Endpoints to retrieve and manage query history. **Note:** This API is experimental and may change in future versions without notice. name: Query History REST API (Experimental) - description: Description of REST API to configure an ActivePivot application. name: Configuration REST API - description: API to export the result of MDX queries name: Data Export - description: > GetAggregatesQuery (GAQ) REST API for executing OLAP queries. This API provides a programmatic way to execute GetAggregatesQuery operations against Atoti cubes. Results and updates are streamed in Apache Arrow format for efficient data transfer and processing. name: Continuous GAQ Query REST API (Experimental) - description: Endpoints for AI-based optimization of Atoti cubes name: AI Optimizer - description: > GetAggregatesQuery (GAQ) REST API for executing OLAP queries. This API provides a programmatic way to execute GetAggregatesQuery operations against Atoti cubes. Results are returned in Apache Arrow format for efficient data transfer and processing. **Note:** This API is experimental and may change in future versions without notice. name: GAQ Query REST API (Experimental) - description: Implementation of the REST Bulk API of the content server. name: Bulk REST API paths: /activeviam/pivot/rest/v10/cube/query/mdx/drillthroughheaders: post: tags: - Query REST API (V10) summary: >- Gets the possible column headers for a given drillthrough MDX query. The request has the same format as the request for the actual drillthrough query, just the URL changes. description: Executes the given MDX query and returns only the query plan. operationId: mdxDrillthroughHeadersQuery_1 requestBody: content: application/json: schema: $ref: '#/components/schemas/JsonMdxQueryPlan' description: The MDX query for query plan inspection. required: true responses: '200': content: '*/*': schema: $ref: '#/components/schemas/JsonQueryPlanData' description: The result of the MDX query. '400': content: '*/*': schema: items: $ref: '#/components/schemas/JsonTabularHeader' type: array description: When there is an error with the given MDX query '401': content: '*/*': schema: items: $ref: '#/components/schemas/JsonTabularHeader' type: array description: Resource only available to connected user components: schemas: JsonMdxQueryPlan: properties: context: additionalProperties: type: string type: object mdx: type: string queriesTimeLimit: type: string type: object JsonQueryPlanData: properties: aggregateRetrievals: items: $ref: '#/components/schemas/RetrievalData' type: array databaseDependencies: additionalProperties: items: format: int32 type: integer type: array uniqueItems: true type: object databaseRetrievals: items: $ref: '#/components/schemas/DatabaseRetrievalData' type: array dependencies: additionalProperties: items: format: int32 type: integer type: array uniqueItems: true type: object planInfo: $ref: '#/components/schemas/IPlanInfoData' queryFilters: items: $ref: '#/components/schemas/FilterData' type: array querySummary: $ref: '#/components/schemas/QuerySummaryData' type: object JsonTabularHeader: properties: caption: type: string name: type: string type: type: string visible: type: boolean type: object RetrievalData: properties: filterId: format: int32 type: integer horizontalDispatching: $ref: '#/components/schemas/QueryDispatchingData' location: items: $ref: '#/components/schemas/LocationData' type: array measureProvider: type: string measures: items: type: string type: array partialProviderName: type: string partitioning: type: string resultSizes: items: format: int32 type: integer type: array retrievalId: format: int32 type: integer timingInfo: additionalProperties: items: format: int64 type: integer type: array type: object type: type: string underlyingDataNodes: items: type: string type: array type: object DatabaseRetrievalData: properties: condition: type: string fields: items: type: string type: array uniqueItems: true joinedMeasure: items: type: string type: array uniqueItems: true resultSizes: items: format: int32 type: integer type: array retrievalId: format: int32 type: integer store: type: string timingInfo: additionalProperties: items: format: int64 type: integer type: array type: object type: object IPlanInfoData: type: object FilterData: properties: description: type: string id: format: int32 type: integer type: object QuerySummaryData: properties: measures: items: type: string type: array uniqueItems: true partialProviders: items: type: string type: array uniqueItems: true partitioningCountByType: additionalProperties: format: int32 type: integer type: object resultSizeByPartitioning: additionalProperties: format: int32 type: integer type: object retrievalsCountByType: additionalProperties: format: int32 type: integer type: object totalDatabaseResultSize: format: int32 type: integer totalRetrievals: format: int32 type: integer type: object QueryDispatchingData: properties: dispatchingPerApplication: items: $ref: '#/components/schemas/ApplicationDispatchingData' type: array type: object LocationData: properties: dimension: type: string hierarchy: type: string level: items: type: string type: array path: items: type: object type: array type: object ApplicationDispatchingData: properties: applicationName: type: string dispatchingPerLevel: additionalProperties: additionalProperties: $ref: '#/components/schemas/CubeDispatchingData' type: object type: object type: object CubeDispatchingData: properties: dispatchedMembers: additionalProperties: items: type: object type: array type: object type: object ````