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ClickHouse v20.3 Documentation
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Nested Data Structures
来源:ClickHouse
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2020-10-27 22:05:10
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Introduction
Overview
Distinctive Features of ClickHouse
ClickHouse Features that Can Be Considered Disadvantages
Performance
History
Adopters
Getting Started
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Installation
Tutorial
Example Datasets
OnTime
New York Taxi Data
AMPLab Big Data Benchmark
WikiStat
Terabyte Click Logs from Criteo
Star Schema Benchmark
Yandex.Metrica Data
Interfaces
Introduction
Command-Line Client
Native Interface (TCP)
HTTP Interface
MySQL Interface
Input and Output Formats
JDBC Driver
ODBC Driver
C++ Client Library
Third-Party
Client Libraries
Integrations
Visual Interfaces
Proxies
Engines
Table Engines
Introduction
MergeTree Family
MergeTree
Data Replication
Custom Partitioning Key
ReplacingMergeTree
SummingMergeTree
AggregatingMergeTree
CollapsingMergeTree
VersionedCollapsingMergeTree
GraphiteMergeTree
Log Family
Introduction
StripeLog
Log
TinyLog
Integrations
Kafka
MySQL
JDBC
ODBC
HDFS
Special
Distributed
External data
Dictionary
Merge
File
Null
Set
Join
URL
View
MaterializedView
Memory
Buffer
GenerateRandom
Database Engines
Introduction
MySQL
Lazy
SQL Reference
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Syntax
Statements
SELECT
INSERT INTO
CREATE
ALTER
SYSTEM
SHOW
Other
Functions
Introduction
Arithmetic
Comparison
Logical
Type Conversion
Working with Dates and Times
Working with strings
For Searching Strings
For Replacing in Strings
Conditional
Mathematical
Rounding
Working with Arrays
Splitting and Merging Strings and Arrays
Bit
Bitmap
Hash
Generating Pseudo-Random Numbers
Encoding
Working with UUID
Working with URLs
Working with IP Addresses
Working with JSON.
Higher-Order
Working with External Dictionaries
Working with Yandex.Metrica Dictionaries
Implementing the IN Operator
arrayJoin
Working with geographical coordinates
Working with Nullable arguments
Machine Learning Functions
Introspection
Other
Aggregate Functions
Introduction
Reference
Aggregate function combinators
Parametric aggregate functions
Table Functions
Introduction
file
merge
numbers
remote
url
mysql
jdbc
odbc
hdfs
input
generateRandom
Dictionaries
Introduction
External Dictionaries
General Description
Configuring an External Dictionary
Storing Dictionaries in Memory
Dictionary Updates
Sources of External Dictionaries
Dictionary Key and Fields
Hierarchical dictionaries
Internal Dictionaries
Operators
Data Types
Introduction
UInt8, UInt16, UInt32, UInt64, Int8, Int16, Int32, Int64
Float32, Float64
Decimal
Boolean
String
FixedString(N)
UUID
Date
DateTime
Enum
Array(T)
AggregateFunction(name, types_of_arguments…)
Tuple(T1, T2, …)
Nullable
Nested Data Structures
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Nested(Name1 Type1, Name2 Type2, …)
Special Data Types
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Expression
Set
Nothing
Interval
Domains
Overview
IPv4
IPv6
Guides
Overview
Applying CatBoost Models
Operations
Introduction
Requirements
Monitoring
Troubleshooting
ClickHouse Update
Access Rights
Data Backup
Configuration Files
Quotas
System Tables
Optimizing Performance
Query Profiling
Testing Hardware
Server Configuration Parameters
Introduction
Server Settings
Settings
Introduction
Permissions for Queries
Restrictions on Query Complexity
Settings
Settings Profiles
Constraints on Settings
User Settings
Utilities
Overview
clickhouse-copier
clickhouse-local
clickhouse-benchmark
Usage Recommendations
Development
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The Beginner ClickHouse Developer Instruction
Overview of ClickHouse Architecture
Browse ClickHouse Source Code
How to Build ClickHouse on Linux
How to Build ClickHouse on Mac OS X
How to Build ClickHouse on Linux for Mac OS X
How to Build ClickHouse on Linux for AARCH64 (ARM64)
How to Write C++ Code
How to Run ClickHouse Tests
Third-Party Libraries Used
Commercial
Cloud Service Providers
What’s New
Roadmap
Changelog
Security Changelog
F.A.Q.
General Questions
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