更新时间:2024-01-23 GMT+08:00
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提交SQL语句

功能介绍

在MRS集群中提交并执行一条SQL语句。

接口约束

调用方法

请参见如何调用API

URI

POST /v2/{project_id}/clusters/{cluster_id}/sql-execution

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

项目编号。获取方法,请参见获取项目ID

cluster_id

String

集群ID。获取方法,请参见获取集群ID

请求参数

表2 请求Body参数

参数

是否必选

参数类型

描述

sql_type

String

SQL类型。目前仅支持“presto”类型的SQL。 说明:

  • 只有包含Presto组件的集群才能提交执行presto类型的SQL。

  • 当前仅MRS 2.0.6版本的MRS 2.0.6.1补丁、MRS 2.1.0版本的MRS 2.1.0.7补丁、MRS 3.1.2及之后版本集群支持。

sql_content

String

待执行的SQL语句。 说明: 目前仅支持执行单条语句,语句中不包含“;”。

database

String

执行SQL所在的数据库,默认为default。

archive_path

String

SQL执行结果的转储文件夹。 说明: 只有select语句才会转储查询的结果。当前仅支持转储到OBS中。

响应参数

状态码: 200

表3 响应Body参数

参数

参数类型

描述

id

String

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

message

String

错误信息。

statement

String

执行的SQL语句。

status

String

SQL的执行状态。

  • QUEUED

  • WAITING_FOR_RESOURCES

  • PLANNING

  • STARTING

  • RUNNING

  • FINISHING

  • FINISHED

  • FAILED

result_location

String

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

content

Array<Array<String>>

SQL的执行结果。 说明: 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4 响应Body参数

参数

参数类型

描述

error_code

String

错误码

error_msg

String

错误描述

请求示例

提交一个presto类型的SQL语句

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

{
  "sql_type" : "presto",
  "sql_content" : "show tables",
  "database" : "default",
  "archive_path" : "obs://my-bucket/path"
}

响应示例

状态码: 200

提交SQL语句成功

{
  "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

提交SQL语句失败

{
  "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。

提交一个presto类型的SQL语句

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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 ExecuteSqlSolution {

    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();
        ExecuteSqlRequest request = new ExecuteSqlRequest();
        SqlExecutionReq body = new SqlExecutionReq();
        body.withArchivePath("obs://my-bucket/path");
        body.withDatabase("default");
        body.withSqlContent("show tables");
        body.withSqlType("presto");
        request.withBody(body);
        try {
            ExecuteSqlResponse response = client.executeSql(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());
        }
    }
}

提交一个presto类型的SQL语句

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# coding: utf-8

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.getenv("CLOUD_SDK_AK")
    sk = os.getenv("CLOUD_SDK_SK")

    credentials = BasicCredentials(ak, sk) \

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

    try:
        request = ExecuteSqlRequest()
        request.body = SqlExecutionReq(
            archive_path="obs://my-bucket/path",
            database="default",
            sql_content="show tables",
            sql_type="presto"
        )
        response = client.execute_sql(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

提交一个presto类型的SQL语句

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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")

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

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

    request := &model.ExecuteSqlRequest{}
	archivePathSqlExecutionReq:= "obs://my-bucket/path"
	databaseSqlExecutionReq:= "default"
	request.Body = &model.SqlExecutionReq{
		ArchivePath: &archivePathSqlExecutionReq,
		Database: &databaseSqlExecutionReq,
		SqlContent: "show tables",
		SqlType: "presto",
	}
	response, err := client.ExecuteSql(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

提交SQL语句成功

400

提交SQL语句失败

错误码

请参见错误码

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