什么是SQL搜索处理_智能开放搜索 OpenSearch(Open Search)-阿里云帮助中心

系统提供了丰富的搜索语法以满足用户各种场景下的搜索需求。

URL

sql?query=SELECT brand, COUNT(*) FROM phone GROUP BY (brand)&&kvpair=trace:INFO;formatType:json

以上 URL 省略了请求Header参数及编码等因素。
以上 URL 中省略了访问应用的 host 地址。
以上URL 中拼接的所有查询参数，请查看下方“查询参数”的参数定义、使用方式及样例

请求协议

HTTP

请求方式

GET

支持格式

JSON

签名机制

可用以下方法计算签名（authorization）

参数	类型	描述
accessUserName	String	用户名，可在实例详情页>网络信息查看
accessPassWord	String	密码，可在实例详情页>网络信息修改

import com.aliyun.darabonba.encode.Encoder;
import com.aliyun.darabonbastring.Client;

public class GenerateAuthorization {

    public static void main(String[] args) throws Exception {
        String accessUserName = "username";
        String accessPassWord = "password";
        String realmStr = "" + accessUserName + ":" + accessPassWord + "";
        String authorization = Encoder.base64EncodeToString(Client.toBytes(realmStr, "UTF-8"));
        System.out.println(authorization);
    }
}

authorization正确返回格式

cm9vdDp******mdhbA==

注意：使用HTTP请求设置authorization参数是需加上Basic前缀，示例：

authorization: Basic cm9vdDp******mdhbA==

查询参数

参数	类型	必须	描述
query子句	String	是	请参考文档：query子句
kvpairs子句	String	否	请参考文档：kvpair子句

查询参数用法

query：query子句主要是拼写完整的sql语句。

返回参数

参数	类型	描述
total_time	String	该条查询的记录id，主要用于排查问题使用
covered_percent		覆盖率
row_count	int

curl示例

curl --location --request GET 'http://ha-cn-*******.public.ha.aliyuncs.com/query?sql=query=select * from index_hdf%26%26kvpair=trace:INFO;format:full_json' \
--header 'authorization: Basic ******************' \
--header 'host: ha-cn-*******.public.ha.aliyuncs.com'

Search示例

正常返回

{
    "total_time": 4.557,
    "covered_percent": 1.0,
    "row_count": 1,
    "format_type": "full_json",
    "search_info": {},
    "trace": [],
    "sql_result": {
        "data": [
            [
                1
            ]
        ],
        "column_name": [
            "id"
        ],
        "column_type": [
            "int64"
        ]
    },
    "error_info": {
        "ErrorCode": 0,
        "Error": "ERROR_NONE",
        "Message": ""
    }
}

错误返回

{
    "total_time": 15.96,
    "covered_percent": 0.0,
    "row_count": 0,
    "format_type": "full_json",
    "search_info": {},
    "trace": [],
    "sql_result": {
        "data": [],
        "column_name": [],
        "column_type": []
    },
    "error_info": {
        "ErrorCode": 8010,
        "Error": "call sql plan service failed.",
        "Message": "failed to get sql plan, error message is [IQUAN_EC_INTERNAL_ERROR] internal error : SQL validation failed. From line 1, column 15 to line 1, column 23: Object 'index_hdf' not found\nFrom line 1, column 15 to line 1, column 23: Object 'index_hdf' not found\norg.apache.flink.table.api.ValidationException: SQL validation failed. From line 1, column 15 to line 1, column 23: Object 'index_hdf' not found\n\tat org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:149)\n\tat org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:108)\n\tat org.apache.flink.table.planner.delegation.ParserImpl.validate(ParserImpl.java:91)\n\tat com.taobao.search.iquan.core.api.impl.SqlQueryableImpl$SqlWorkFlow.validateSql(SqlQueryableImpl.java:646)\n\tat com.taobao.search.iquan.core.api.impl.SqlQueryableImpl$SqlWorkFlow.process(SqlQueryableImpl.java:392)\n\tat com.taobao.search.iquan.core.api.impl.SqlQueryableImpl.select(SqlQueryableImpl.java:134)\n\tat com.taobao.search.iquan.client.common.service.SqlQueryService.sqlQuery(SqlQueryService.java:89)\n\tat com.taobao.search.iquan.client.IquanClient.sqlQuery(IquanClient.java:79)\nCaused by: org.apache.calcite.runtime.CalciteContextException: From line 1, column 15 to line 1, column 23: Object 'index_hdf' not found\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)\n\tat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)\n\tat java.lang.reflect.Constructor.newInstance(Constructor.java:422)\n\tat org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:467)\n\tat org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:883)\n\tat org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:868)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:5032)\n\tat org.apache.calcite.sql.validate.IdentifierNamespace.resolveImpl(IdentifierNamespace.java:179)\n\tat org.apache.calcite.sql.validate.IdentifierNamespace.validateImpl(IdentifierNamespace.java:184)\n\tat org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1067)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1041)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3202)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3187)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3450)\n\tat org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60)\n\tat org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1067)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1041)\n\tat org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1016)\n\tat org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:724)\n\tat org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:144)\n\t... 7 more\nCaused by: org.apache.calcite.sql.validate.SqlValidatorException: Object 'index_hdf' not found\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)\n\tat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)\n\tat java.lang.reflect.Constructor.newInstance(Constructor.java:422)\n\tat org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:467)\n\tat org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:560)\n\t... 26 more\n"
    }
}

注意事项

查询query长度超过30K，请使用 RESTFUL API搜索处理