# 查询SQL结果-ShowSqlResult #### 功能介绍 在MRS集群中查询一条SQL的执行结果，与提交SQL语句接口配合使用，用于获取异步提交的SQL任务的运行结果。 #### 接口约束 无 #### 调用方法 请参见[如何调用API](https://support.huaweicloud.com/api-mrs/zh-cn_topic_0013582897.html)。 #### 授权信息 账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。 - 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-mrs/mrs_02_0221.html)。 - 如果使用身份策略授权，需具备如下身份策略权限。 | 授权项 | 访问级别 | 资源类型（\*为必须） | 条件键 | 别名 | 依赖的授权项 | |:---|:---|:---|:---|:---|:---| | mrs:cluster:getSql | Read | cluster \* | - g:ResourceTag/\ - g:EnterpriseProjectId | mrs:sql:get | - | #### 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 | 是 | String | **参数解释：** 项目编号。获取方法，请参见[获取项目ID](https://support.huaweicloud.com/api-mrs/mrs_02_0011.html)。 **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 | 是 | String | **参数解释：** 集群ID。获取方法，请参见[获取集群ID](https://support.huaweicloud.com/api-mrs/mrs_02_9001.html#mrs_02_9001__zh-cn_topic_0264280065_section177891315153619)。 **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 | 是 | 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 无 #### 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的语句才会将SQL的执行结果转储到result_location中。 **取值范围：** 不涉及 | | content | Array\\> | **参数解释：** SQL的执行结果。仅非SELECT类型SQL语句会在此字段返回执行结果，若无返回结果则为空数组。外层数组表示SQL执行结果，内层数组表示每行的字段值详情。 **取值范围：** 不涉及 | **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：** 400：操作执行失败 | | error_msg | String | **参数解释：** 错误描述。 **取值范围：** 400：操作执行失败 | #### 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", "error_msg" : "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。 - [Java] ``` 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("")) .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()); } } } ``` - [Python] ``` # 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("")) \ .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) ``` - [Go] ``` 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("")). 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) } } ``` - [更多] 更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/MRS/sdk?api=ShowSqlResult&version=v2)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](https://support.huaweicloud.com/api-mrs/ErrorCode.html)。