UQuery frees you from having to manage infrastructure, delivering zero maintenance costs and second-level provisioning. It supports standard SQL and SparkSQL interfaces.

Flexible Exploration

You can query and explore data from various sources quickly, without having to load and convert the data. Multiple data formats and analytical dimensions are supported.


Computing resources are isolated between tenants to meet job SLAs. Your data rights can be restricted to a specific table or column for more precise management.


GB- to EB-scale UQuery data can be stored on OBS. Automatic elastic expansion allows you to query data without worrying about whether you have sufficient resources.

Application Scenarios

  • Historical Data Querying

  • Large-Scale Log Analysis

  • Archived Data Analysis

Historical Data Querying

IoT: Fleet Management

UQuery can help manage diversified cargo fleets of millions of vehicles precisely and cost-effectively by analyzing driving behavior based on historical data and playing back transportation routes.


  • Huge Volumes of Data

    GB- or even EB-scale data can be stored on OBS.

  • No Data Conversion

    You can run SQL statements directly to analyze the historical data stored on OBS, instead of having to load or convert the data.

  • Various Data Formats

    UQuery works with various data formats, including TXT, CSV, JSON, Parquet, and ORC. Data stored on OBS can be analyzed without converting its format.

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Large-Scale Log Analysis

Online Education: Learning Behavior Analysis

UQuery uses students' learning records stored on OBS to analyze their learning behavior. It helps teachers, parents, and students enhance students' learning efficiency based on the analysis results.


  • Low Cost

    Huge volumes of log data can be stored on OBS at a low cost.

  • Easy to Use

    You can use SQL statements to perform the analysis, instead of having to set up an extra system and editing complex programs.

  • Diversified Analytical Dimensions

    You can query and analyze data from various aspects, such as the learning duration and associated knowledge points, facilitating innovative services.

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Archived Data Analysis

Archived Data Analysis

Geological exploration companies need to archive huge amounts of database data on OBS to reduce their costs. UQuery can help them analyze their archived data.


  • Easy Data Migration

    CDM can be used to migrate data to OBS without the user having to perform complex operations.

  • Quick Analysis

    Archived data can be analyzed directly, without having to migrate it back to a database.

  • Low Cost

    Data is archived on OBS at a low cost.

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Low Skill Demands

Multiple UQuery usage modes are provided and standard SQL is supported to satisfy user habits.

  • UQuery can be accessed using the web console or through RESTful APIs.

  • UQuery supports the standard SQL2003 and is compatible with SparkSQL/HQL and TPC-H/TPC-DS.

OBS Data Querying

You can query OBS data directly. UQuery is an out-of-box service with flexibility.

  • Storage and computing resources are separate. Data can be stored on OBS and queried using SQL statements.

  • UQuery is ideal for quick, ad hoc querying. You can query data at any time and without preparing resources in advance or performing removal operations afterwards.

Secure and Available

UQuery complies with robust authentication systems and provides 99.999999999% data durability.

  • HUAWEI CLOUD has passed certification with the following security authentication systems: C-STAR, MIIT trusted cloud, the Office of the Central Leading Group for Cyberspace Affairs' cloud service cybersecurity evaluation, MPS level III cloud service classified protection, and ISO27001.

  • Security is ensured by user access authentication, encrypted internal service communication, cross-domain bidirectional authentication, and encrypted data transmission.


UQuery isolates resources between tenants and provides fine-grained data permission control.

  • Resource queues can be applied for on a tenant-by-tenant basis. Enterprise tenants can specify queues for users in different departments to isolate computing resources and meet each department's SLA.

  • Enterprise administrators can control internal users' data permissions, such as those for creating and deleting tables or querying specific columns.

Video Library

UQuery: Product Overview

UQuery: Quick Start

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