YDB（Yandex Database）22.2 Documentation
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Overview

来源 1 浏览 228 扫码 打印 2022-04-24 19:45:17

    YQL Tutorial - Overview

    The tutorial consists of 15 steps:

    1. Creating a table
    3. Selecting data from all columns
    5. Data aggregation
    7. Joining tables with JOIN
    9. Inserting data with INSERT
    11. Deleting data
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    • Contents
    • Downloads
    • Cluster management
      • System views
      • Overview
      • Embedded UI
        • Hive web-viewer
        • Charts
        • Connections overview
        • Logs
        • Overview
        • YDB Monitoring
      • Kubernetes
        • Deploying in AWS Elastic Kubernetes Service
        • Overview
        • Deploying in Yandex Managed Service for Kubernetes
        • Use
      • Manual
        • Cluster configuration
        • Local deployment
        • Maintaining a cluster’s disk subsystem
          • Disk load balancing
          • Enabling/disabling SelfHeal
          • Cluster extension
          • Enabling/disabling Scrubbing
          • Moving VDisks
          • Overview
          • Updating configurations via CMS
          • How to stay within the failure model
          • Methods to free up space on physical devices
          • Safe restart and shutdown of nodes
          • Adding storage groups
          • Updating configuration of the actor system
    • Concepts
      • Connecting to and authenticating with a database
      • Terms and definitions
      • Data model and schema
      • Database limits
      • Transactions
      • Time to Live (TTL)
      • Secondary indexes
      • Serverless and Dedicated operation modes
      • YDB cluster
        • Overview
        • General YDB schema
        • Disk subsystem of a cluster
      • Overview
      • Scan queries
    • FAQ
      • YQL
      • General questions
      • Errors
      • Serverless
      • All questions on one page
      • Overview
      • SDK
    • Getting started
      • YQL query language
      • Creating a database
      • Authentication
      • Overview
      • YDB command line interface (CLI)
      • Useful links
      • YDB SDK
      • How to edit the documentation
        • How to participate in the development of documentation
        • Creating customized documentation
        • Structure of subject directories
        • Overview
        • Building documentation
        • Content creation guide
      • Self-hosted deployment
        • Minikube
        • Binary file
        • Docker
        • Overview
    • Manage databases
      • Backup and recovery
      • Overview
      • Diagnostics
        • Overview
        • Monitoring
        • System views
    • Recommendations
      • Secondary indexes
      • Using timeouts
      • Paginated output
      • Choosing a primary key for maximum performance
      • Loading large data volumes
      • Overview
    • Reference
      • CLI
        • Connecting to and authenticating with a database
        • Global parameters
        • Install
        • Structure of YDB CLI commands
        • Overview
        • Service commands
        • Importing and exporting data
          • Importing data from the file system
          • Exporting data to the file system
          • Overview
          • File structure of data export
          • Exporting data to S3
          • Importing data from S3
          • Connecting to and authenticating with S3
        • Information services
          • Authentication
          • List of endpoints
        • Load testing
          • Overview
          • Stock load
        • Managing profiles
          • Using a profile in requests
          • Creating a profile
          • Activated profile
          • Overview
          • Deleting a profile
          • Getting profile information
        • Operations with data
          • Query execution plan
          • Making a DB query
          • Streaming table reads
          • Scan queries
        • Working with the DB schema
          • Renaming tables
          • Secondary indexes
          • Directories
          • List of objects
          • Information about the object
      • SDK
        • Handling errors in the API
        • Overview
        • Install
        • Authentication
        • Code recipes
          • Setting the session pool size
          • Overview
          • Running repeat queries
          • Authentication
            • Using a token
            • Anonymous
            • Overview
            • Username and password based
            • Metadata service
            • Using environment variables
            • Service account file
          • Balancing
            • Prefer the nearest data
            • Prefer the availability zone
            • Overview
            • Random choice
          • Troubleshooting
            • Enable tracing in Jaeger
            • Enable metrics in Prometheus
            • Overview
            • Enable logging
        • Test app
          • Overview
          • Python
          • PHP
          • Go
          • C# (.NET)
          • Node.js
          • C++
          • Java
          • Archive
            • Go v1
            • Go v2
      • YQL
        • Overview
        • Built-in functions
          • For structures
          • For types
          • Overview
          • For dictionaries
          • For lists
          • For JSON
          • Aggregate
          • C++ libraries
            • DateTime
            • Url
            • Math
            • Overview
            • Pcre
            • Unicode
            • Ip
            • Hyperscan
            • Re2
            • Digest
            • Yson
            • Pire
            • Histogram
            • String
          • Window
          • Basic
        • Data types
          • Containers
          • Optional
          • Type casting
          • Simple
          • JSON
          • Text representation of data types
          • Overview
          • Special
        • Syntax
          • CREATE TABLE
          • UPSERT
          • DROP TABLE
          • Lexical structure
          • GROUP BY
          • ALTER TABLE
          • DECLARE
          • VALUES
          • REPLACE
          • PRAGMA
          • Unsupported statements
          • ACTION
          • JOIN
          • Overview
          • UPDATE
          • FLATTEN
          • DISCARD
          • INTO RESULT
          • INSERT
          • Expressions
          • SELECT
          • DELETE
          • WINDOW
        • YQL tutorial
          • Joining tables with JOIN
          • Data aggregation
          • Updating data with UPDATE
          • Deleting a table
          • Inserting and updating data with UPSERT
          • Deleting data
          • Selecting data from specific columns
          • Adding data to a table
          • Sorting and filtering
          • Inserting and updating data with REPLACE
          • Inserting data with INSERT
          • Adding and deleting columns
          • Overview
          • Additional selection criteria
          • Selecting data from all columns
          • Creating a table
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