Help Center/ MapReduce Service/ API Reference/ API V2/ SQL APIs/ Querying SQL Results - ShowSqlResult
Updated on 2026-09-15 GMT+08:00

Querying SQL Results - ShowSqlResult

Function

This API is used to query the execution result of a SQL statement in an MRS cluster. It is used together with the API for submitting SQL statements to retrieve the running result of an asynchronously submitted SQL task.

Constraints

None

Debugging

You can debug this API in API Explorer. Automatic authentication is supported. API Explorer can automatically generate sample SDK code and supports sample SDK code debugging.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependency

    mrs:cluster:getSql

    Read

    cluster *

    • g:ResourceTag/<tag-key>

    • g:EnterpriseProjectId

    • mrs:sql:get

    -

URI

  • Format

    GET /v2/{project_id}/clusters/{cluster_id}/sql-execution/{sql_id}

  • Parameter description
    Table 1 URI parameters

    Parameter

    Mandatory

    Type

    Description

    project_id

    Yes

    String

    Definition

    Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

    Constraints

    N/A

    Range

    The value must consist of 1 to 64 characters. Only letters and digits are allowed.

    Default Value

    N/A

    cluster_id

    Yes

    String

    Definition

    Cluster ID. For details on how to obtain the cluster ID, see Obtaining a Cluster ID.

    Constraints

    N/A

    Range

    The value can contain 1 to 64 characters, including only letters, digits, underscores (_), and hyphens (-).

    Default Value

    N/A

    sql_id

    Yes

    String

    Definition

    Execution ID of the SQL statement, which is the sql_id in the result returned by the API for submitting SQL statements.

    Constraints

    N/A

    Range

    N/A

    Default Value

    N/A

Request Parameters

None

Response Parameters

Status code: 200

Table 2 Response parameters

Parameter

Type

Description

id

String

Definition

Execution ID of the SQL statement. An ID is generated only when executing SELECT, SHOW, or DESC statements. The ID is empty for other operations.

Range

N/A

message

String

Definition

Error message

Range

N/A

statement

String

Definition

Ongoing SQL statement

Range

N/A

status

String

Definition

SQL execution status

Range

  • QUEUED: queuing
  • WAITING_FOR_RESOURCES: waiting for resources
  • PLANNING: being planning
  • STARTING: being started
  • RUNNING: running
  • FINISHING: to be completed
  • FINISHED: completed
  • FAILED: execution failed

result_location

String

Definition

Path for archiving the final results of the SQL query statement Only the SELECT statement dumps the SQL execution results to result_location.

Range

N/A

content

Array<Array<String>>

Definition

Execution result of the SQL statement. This parameter returns the execution result only for non-SELECT SQL statements. It is an empty array if no result is returned.

The outer array represents the result rows, and the inner array of strings represents the field value details of each row.

Range

N/A

Status code: 400

Table 3 Response body parameters

Parameter

Type

Description

error_code

String

Definition

Error code.

Range

400: The operation failed.

error_msg

String

Definition

Error message.

Range

400: The operation failed.

Example Request

Example request for querying the SQL execution result

GET https://{endpoint}/v2/{project_id}/clusters/{cluster_id}/sql-execution/{sql_id}

Example Response

Status code: 200

Querying the SQL execution result is successful.

{
  "id" : "20190909_011820_00151_xxxxx",
  "statement" : "show tables",
  "status" : "FINISHED",
  "result_location" : "obs://my_bucket/uuid_date/xxxx.csv",
  "content" : [ [ "t1", null ], [ null, "t2" ], [ null, "t3" ] ]
}

Status code: 400

Failed to query the SQL execution result.

{
  "error_code" : "MRS.0011",
  "message": "Failed to submit SQL to the executor. The cluster ID is xxxx"
}

SDK Sample Code

The SDK sample code is as follows.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.mrs.v2.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v2.*;
import com.huaweicloud.sdk.mrs.v2.model.*;


public class ShowSqlResultSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowSqlResultRequest request = new ShowSqlResultRequest();
        request.withClusterId("{cluster_id}");
        request.withSqlId("{sql_id}");
        try {
            ShowSqlResultResponse response = client.showSqlResult(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}
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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v2.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ShowSqlResultRequest()
        request.cluster_id = "{cluster_id}"
        request.sql_id = "{sql_id}"
        response = client.show_sql_result(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth, err := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        SafeBuild()

    if err != nil {
        fmt.Println(err)
        return
    }

    hcClient, err := mrs.MrsClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


    if err != nil {
        fmt.Println(err)
        return
    }

    client := mrs.NewMrsClient(hcClient)

    request := &model.ShowSqlResultRequest{}
	request.ClusterId = "{cluster_id}"
	request.SqlId = "{sql_id}"
	response, err := client.ShowSqlResult(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

See Status Codes.

Error Codes

See Error Codes.