PingCAP

tidb Statistics API

Endpoints for exporting optimizer statistics used for query planning.

Documentation GitHub OpenAPI

Operations 1

GET /stats/dump/{db}/{table} Dump table statistics #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: TiDB HTTP Statistics API
  description: The TiDB HTTP API is a built-in administrative interface available on self-managed TiDB server instances, accessible on port 10080 by default.
  version: '1.0'
  contact:
    name: TiDB GitHub
    url: https://github.com/pingcap/tidb/blob/master/docs/tidb_http_api.md
  termsOfService: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:10080
  description: Local TiDB Node (default status port)
tags:
- name: Statistics
  description: Endpoints for exporting optimizer statistics used for query planning.
paths:
  /stats/dump/{db}/{table}:
    get:
      operationId: dumpTableStats
      summary: Dump table statistics
      description: Returns the optimizer statistics for the specified table in JSON format. Statistics include histogram data, count-min sketch approximations, and correlation coefficients used by the TiDB query optimizer when generating execution plans. Optionally specify a timestamp to retrieve historical statistics.
      tags:
      - Statistics
      parameters:
      - $ref: '#/components/parameters/db'
      - $ref: '#/components/parameters/table'
      - name: timestamp
        in: query
        description: Optional Unix timestamp to retrieve historical statistics at a specific point in time.
        required: false
        schema:
          type: integer
      responses:
        '200':
          description: Table statistics dumped successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TableStats'
        '404':
          description: The specified database or table was not found.
components:
  parameters:
    table:
      name: table
      in: path
      description: The table name within the specified database.
      required: true
      schema:
        type: string
    db:
      name: db
      in: path
      description: The database name.
      required: true
      schema:
        type: string
  schemas:
    TableStats:
      type: object
      description: Optimizer statistics for a TiDB table.
      properties:
        database:
          type: string
          description: The database name.
        table_name:
          type: string
          description: The table name.
        columns:
          type: object
          description: A map of column names to their statistical histogram data.
          additionalProperties:
            type: object
        indices:
          type: object
          description: A map of index names to their statistical data.
          additionalProperties:
            type: object
        count:
          type: integer
          description: The estimated total row count for the table.
        modify_count:
          type: integer
          description: The number of row modifications since the last statistics collection.
externalDocs:
  description: TiDB HTTP API Reference
  url: https://github.com/pingcap/tidb/blob/master/docs/tidb_http_api.md