Last updated: 2022-01-20 14:40:18

1. API Description

Domain name for API request:

This API is used to query the table information of a TencentDB instance.

A maximum of 20 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.
This document describes the parameters for Signature V1. It's recommended to use the V3 signature, which provides higher security. Note that for Signature V3, the common parameters need to be placed in the HTTP Header. See details.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: DescribeDatabaseTable.
Version Yes String Common parameter. The value used for this API: 2018-04-11.
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
InstanceId Yes String Instance ID in the format of dcdbt-ow7t8lmc.
DbName Yes String Database name, which can be obtained through the DescribeDatabases API.
Table Yes String Table name, which can be obtained through the DescribeDatabaseObjects API.

3. Output Parameters

Parameter Name Type Description
InstanceId String Instance name.
DbName String Database name.
Table String Table name.
Cols Array of TableColumn Column information.
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Querying the columns in a database table

Input Example
&<Common request parameters>

Output Example

  "Response": {
    "RequestId": "6defc797-13eb-47ec-9a8f-dd3e407ff12c",
    "InstanceId": "dcdbt-52s53yyh",
    "DbName": "test",
    "Table": "persons",
    "Cols": [
        "Col": "id",
        "Type": "bigint(20) unsigned"
        "Col": "name",
        "Type": "varchar(60)"
        "Col": "nick",
        "Type": "varchar(60)"

5. Developer Resources


TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
InternalError.CamAuthFailed CAM authentication request failed.
InternalError.DbOperationFailed Failed to query the database.
InternalError.GetTableInfoFailed Failed to get the table information.
InvalidParameter.GenericParameterError An error occurred while verifying parameter validity.
ResourceUnavailable.InstanceAlreadyDeleted The database instance has been dropped.
ResourceUnavailable.InstanceStatusAbnormal Incorrect database instance status. Operations are not allowed.
UnauthorizedOperation.PermissionDenied You have no permission to manipulate this API or resource.