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12
docs/en/engines/engine-reference-links.json
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docs/en/engines/engine-reference-links.json
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[
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{
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"title": "Database Engines",
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"description": "Database engines determine how ClickHouse interacts with tables and manages data storage.",
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"url": "/docs/en/sql-reference/syntax/"
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},
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{
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"title": "Table Engines",
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"description": "Table engines determine how data is stored, accessed, and manipulated within tables.",
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"url": "/docs/en/sql-reference/formats/"
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}
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]
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docs/en/engines/index.md
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docs/en/engines/index.md
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---
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slug: /en/engines/
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---
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import { TwoColumnList } from '/src/components/two_column_list'
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import { ClickableSquare } from '/src/components/clickable_square'
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import { HorizontalDivide } from '/src/components/horizontal_divide'
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import { ViewAllLink } from '/src/components/view_all_link'
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import { VideoContainer } from '/src/components/video_container'
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import LinksDeployment from './engine-reference-links.json'
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# Engines
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<HorizontalDivide />
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<TwoColumnList items={LinksDeployment} />
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---
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slug: /en/sql-reference/aggregate-functions/
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sidebar_label: Aggregate Functions
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slug: /en/sql-reference/functions/aggregate-functions/
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sidebar_position: 33
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displayed_sidebar: sqlreference
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toc_folder_title: Aggregate Functions
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toc_priority: 27
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toc_title: Aggregate Functions
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---
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# Aggregate Functions
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---
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slug: /en/sql-reference/aggregate-functions/reference/
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toc_folder_title: Reference
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sidebar_position: 36
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toc_hidden: true
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toc_folder_title: Reference
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toc_priority: 1
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toc_title: List of Aggregate Functions
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displayed_sidebar: sqlreference
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---
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# List of Aggregate Functions
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docs/en/sql-reference/functions/functions-index.md
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docs/en/sql-reference/functions/functions-index.md
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---
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slug: /en/sql-reference/functions/
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sidebar_position: 1
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sidebar_label: Overview
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displayed_sidebar: sqlreference
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---
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import { TwoColumnList } from '/src/components/two_column_list'
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import { ClickableSquare } from '/src/components/clickable_square'
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import { HorizontalDivide } from '/src/components/horizontal_divide'
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import { ViewAllLink } from '/src/components/view_all_link'
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import { VideoContainer } from '/src/components/video_container'
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import LinksDeployment from './functions-reference-links.json'
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# Functions
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ClickHouse offers a wide array of functions that help you perform various operations on your data, and are broadly categorized into four kinds:
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<TwoColumnList items={LinksDeployment} />
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[
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{
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"title": "Regular Functions",
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"description": "Functions which perform operations on individual rows of data. They can manipulate strings, numbers, and dates, among other things.",
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"url": "/docs/en/sql-reference/functions/regular-functions/"
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},
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{
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"title": "Aggregate Functions",
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"description": "Functions which operate on data across multiple rows, returning a single result. They are typically used with the GROUP BY clause.",
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"url": "/docs/en/sql-reference/functions/regular-functions/"
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},
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{
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"title": "Table Functions",
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"description": "Functions which enable complex data selection and transformation, often involving external data sources or special table structures.",
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"url": "/docs/en/sql-reference/functions/table-functions/"
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},
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{
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"title": "Window Functions",
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"description": "Functions which perform calculations across a set of table rows that are related to the current row. They are useful for running totals, moving averages, and other analytics.",
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"url": "/docs/en/sql-reference/functions/window-functions/"
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}
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]
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---
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slug: /en/sql-reference/functions/
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slug: /en/sql-reference/functions/regular-functions/
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sidebar_position: 1
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sidebar_label: Overview
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displayed_sidebar: sqlreference
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---
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# Regular Functions
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# ClickHouse SQL Reference
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ClickHouse supports a declarative query language based on SQL that is identical to the ANSI SQL standard in many cases.
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ClickHouse supports a familiar declarative query language based on SQL that is identical to the ANSI SQL standard in many cases, but offers a host of additional functionality.
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Supported queries include GROUP BY, ORDER BY, subqueries in FROM, JOIN clause, IN operator, window functions and scalar subqueries.
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The SQL reference page serves as a comprehensive guide to help users understand and make use of ClickHouse's query language and functionality. It contains information about the supported syntax,
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data types, statements and wide range of input and output formats supported in ClickHouse as well as information on database and table engines and a large number of functions that
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make ClickHouse such an efficient and versatile tool.
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<HorizontalDivide />
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[
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{
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"title": "Syntax",
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"description": "A quick reference for the supported syntax in ClickHouse.",
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"url": "/docs/en/sql-reference/syntax/"
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},
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{
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"title": "Input and Output Formats",
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"description": "A list of available Input and Output formats for handling your data.",
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"url": "/docs/en/sql-reference/formats/"
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},
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{
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"title": "Statements",
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"description": "A list of available SQL statements in ClickHouse",
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"description": "A list of available SQL statements in ClickHouse.",
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"url": "/docs/en/sql-reference/statements/"
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},
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{
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"title": "Database and Table Engines",
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"description": "Engines determine where and how your data is stored",
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"url": "/docs/en/engines/table-engines"
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"description": "Information on database and table engines which determine where and how your data is stored.",
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"url": "/docs/en/engines/engines"
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},
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{
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"title": "Functions",
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"description": "A complete and ever expanding list of functions for manipulating and transforming your data.",
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"url": "/docs/en/engines/engines"
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},
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{
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"title": "Other Features",
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"description": "Additional features which are unique to ClickHouse.",
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"url": "/docs/en/engines/engines"
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}
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]
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