更新时间:2024-08-07 GMT+08:00
分享

查询SQL结果

功能介绍

在MRS集群中查询一条SQL的执行结果。

接口约束

调用方法

请参见如何调用API

URI

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

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

参数解释:

项目编号。获取方法,请参见获取项目ID

约束限制:

不涉及

取值范围:

只能由英文字母和数字组成,且长度为[1-64]个字符。

默认取值:

不涉及

cluster_id

String

参数解释:

集群ID。如果指定集群ID,则获取该集群做过补丁更新的最新版本元数据。获取方法,请参见获取集群ID

约束限制:

不涉及

取值范围:

只能由英文字母、数字以及“_”和“-”组成,且长度为[1-64]个字符。

默认取值:

不涉及

sql_id

String

参数解释:

SQL的执行ID,即提交SQL语句返回结果中的sql_id。

约束限制:

不涉及

取值范围:

不涉及

默认取值:

不涉及

请求参数

响应参数

状态码: 200

表2 响应Body参数

参数

参数类型

描述

id

String

参数解释:

SQL的执行id。执行select、show和desc语句时才会生成id,其他操作id为空。

取值范围:

不涉及

message

String

参数解释:

错误信息。

取值范围:

不涉及

statement

String

参数解释:

执行的SQL语句。

取值范围:

不涉及

status

String

参数解释:

SQL的执行状态。

取值范围:

  • QUEUED:正在排队

  • WAITING_FOR_RESOURCES:正在等待资源

  • PLANNING:正在规划

  • STARTING:正在启动

  • RUNNING:正在运行

  • FINISHING:即将完成

  • FINISHED:已完成

  • FAILED:执行失败

result_location

String

参数解释:

SQL查询语句的最终结果归档路径。只有select的语句才会在将SQL的执行结果转储到result_location中。

取值范围:

不涉及

content

Array<Array<String>>

参数解释:

SQL的执行结果。只有非select的语句才会在content中返回结果,如果SQL中没有结果,content为空。

状态码: 400

表3 响应Body参数

参数

参数类型

描述

error_code

String

参数解释:

错误码。

取值范围:

不涉及

error_msg

String

参数解释:

错误描述。

取值范围:

不涉及

请求示例

查询SQL结果请求示例

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

响应示例

状态码: 200

查询SQL结果成功

{
  "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" ] ]
}

状态码: 400

查询SQL结果失败

{
  "error_code" : "MRS.0011",
  "message" : "提交SQL到Executor上失败,集群ID为xxxx"
}

SDK代码示例

SDK代码示例如下。

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
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");

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

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowSqlResultRequest request = new ShowSqlResultRequest();
        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());
        }
    }
}
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
# 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"]

    credentials = BasicCredentials(ak, sk)

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

    try:
        request = ShowSqlResultRequest()
        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)
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
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")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

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

更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。

状态码

状态码

描述

200

查询SQL结果成功

400

查询SQL结果失败

错误码

请参见错误码

相关文档