Halaman ini belum tersedia dalam bahasa lokal Anda. Kami berusaha keras untuk menambahkan lebih banyak versi bahasa. Terima kasih atas dukungan Anda.

Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

SHALLOW CLONE

Updated on 2025-01-09 GMT+08:00

Function

This command creates a shallow copy of an existing Delta table in a specific version. The cloned information includes the schema, partition information, and data file paths.

Any changes made to the cloned table will only affect the clone itself and not the source table, as long as they do not touch the source data. Note that the cloned table may still point to the data files of the source table, which may cause issues if the source table undergoes a vacuum operation and the files are not found for the clone.

Syntax

CREATE TABLE [target_db.]target_table

SHALLOW CLONE [source_db.]source_table|DELTA.`obs://bucket_name/tbl_path`

location 'obs://bucket_name/tbl_path'

Parameter Description

Table 1 Parameter descriptions of SHALLOW CLONE

Parameter

Description

target_db

Name of the target database, consisting of letters, numbers, and underscores (_)

target_table

Name of the target table, consisting of letters, numbers, and underscores (_)

source_db

Name of the source database, consisting of letters, numbers, and underscores (_)

source_table

Name of the source table, consisting of letters, numbers, and underscores (_)

bucket_name

OBS bucket name

tbl_path

Storage location of the Delta table in the OBS bucket

constraint_name

Constraint name

boolExpression

Constraint expression

Required Permissions

  • SQL permissions
Table 2 Permissions required for executing SHALLOW CLONE

Permission Description

CREATE_TABLE permission on the target database

SELECT permission on the source table

  • Fine-grained permissions: dli:database:createTable and dli:table:select
  • Metadata services provided by LakeFormation. Refer to the LakeFormation documentation for details on permission configuration.

Example

CREATE OR REPLACE TABLE delta_table1 SHALLOW CLONE delta_table0 LOCATION 'obs://bucket0/db0/delta_table1';
CREATE TABLE delta.`obs://bucket0/db0/delta_table1` SHALLOW CLONE delta_table0 VERSION AS OF 10;

System Response

Displays whether the task is successfully executed in the execution history or job list.

Kami menggunakan cookie untuk meningkatkan kualitas situs kami dan pengalaman Anda. Dengan melanjutkan penelusuran di situs kami berarti Anda menerima kebijakan cookie kami. Cari tahu selengkapnya

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback