检测到您已登录华为云国际站账号,为了您更好的体验,建议您访问国际站服务网站 https://www.huaweicloud.com/intl/zh-cn

不再显示此消息

  • Intl-English
    International
    • English
    • Bahasa Indonesia
    • Español
    • Português
    • Türkçe
    • عربي
    • ไทย
    • 简体中文
    • 日本語
    中国站
    • 简体中文
    Europe
    • English
    • Deutsch
    • Español
    • Français
    • Nederlands
  • Huawei Cloud
    • Activities
    • Products
    • Solutions
    • Pricing
    • KooGallery
    • Partners
    • Developers
    • Support
    • About Us
        Show more results for “”
        • Contact Us
        • Documentation
        • Console
          • My Account
          • Billing & Costs
          • Service Tickets
          • Unread Messages
          • Console
          • Partner Center
          • Sign InSign Up
        • Sign In
        • Sign Up
          • My AccountComplete Sign Up
          • Billing & Costs
          • Service Tickets
          • Unread Messages
          • Console
          • Partner Center
          • Log Out
        Cancel
            Help Center/Data Warehouse Service/FAQs/Database Use
            Updated on 2025-10-11 GMT+08:00
            View PDF
            Share
            • x.com
            • Facebook
            • LinkedIn
            • Copy link

            Copied.

            Database Use

            • How Do I Adjust DWS Distribution Columns?
            • How Do I View and Set the Character Set Encoding Format of a DWS Database?
            • How Do I Do If a Field of the Date Type Is Automatically Converted to a Timestamp Type During Table Creation in DWS?
            • Do I Need to Run VACUUM FULL and ANALYZE on Common Tables Periodically in DWS?
            • How Do I Export a DWS Table Schema?
            • How Do I Delete Table Data Efficiently in DWS?
            • How Do I View DWS Foreign Table Information?
            • How Will Data Be Stored in a DWS Table If No Distribution Column Is Specified During Its Creation?
            • How Do I Replace the Null Results with 0 in a DWS Join Query?
            • How Do I Check Whether a DWS Table Is Row-Stored or Column-Stored?
            • How Do I Query DWS Column-Store Table Information?
            • Why Is the Index Invalid During DWS Query?
            • How Do I Use a User-Defined DWS Function to Rewrite the CRC32() Function?
            • What Is a DWS Schema Starting with pg_toast_temp* or pg_temp*?
            • Solutions to Inconsistent DWS Query Results
            • Which System Catalogs in DWS Cannot Undergo the VACUUM FULL Operation?
            • In Which Scenarios Will a DWS Statement Be in the idle in transaction State?
            • How Does DWS Implement Row-to-Column and Column-to-Row Conversion?
            • What Are the Differences Between DWS Unique Constraints and Unique Indexes?
            • What Are the Differences Between DWS Functions and Stored Procedures?
            • How Do I Delete Duplicate Table Data from DWS?

            Feedback

            Was this page helpful?

            HelpfulNot helpful
            Provide feedback

            Thank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.

            The system is busy. Please try again later.

            Which of the following issues have you encountered?

            Content is inconsistent with the product UI
            Unclear descriptions
            Lack of examples or code
            Incorrect steps
            Can't find what I need
            Lack of best practices

            Feedback (optional)

            0/500

            Select at least one type of issue, and enter your comments or suggestions.

            Enter a maximum of 500 characters.

            SubmitCancel

            For any further questions, feel free to contact us through the chatbot.

            Chatbot
            Contact SalesAfter-SalesSelf Service
            • Site Terms
            • Privacy Statement

            Explore Huawei Cloud

            Why UsCustomer StoriesTrust CenterLegalPress Releases

            Featured Services

            Elastic Cloud Server (ECS)Elastic IP (EIP)RDS for MySQLElastic Volume Service (EVS)MapReduce Service (MRS)

            Service and Support

            DocumentationContact UsPublic NoticesSupport PlansService Health Dashboard

            Account and Payment

            Top UpInvoicesBilling CenterMy AccountPayment Method

            Quick Links

            Huawei CorporateHuawei EnterpriseHuawei Consumer BusinessHuawei Developers

            © 2026, Huawei Cloud Computing Technologies Co., Ltd. and/or its affiliates. All rights reserved.

            • Site Terms
            • Privacy Statement