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ClickHouse is an open-source column-oriented DBMS (columnar database management system) for online analytical processing (OLAP) that allows users to generate analytical reports using SQL queries in real-time. ClickHouse Inc. is headquartered in the San Francisco Bay Area with the subsidiary, ClickHouse B.V., based in Amsterdam, Netherlands.
ClickHouse: C++ Released in 2016 to analyze data that is updated in real time CrateDB: Java C-Store: C++ The last release of the original code was in 2006; Vertica a commercial fork, lives on. DuckDB: C++ An embeddable, in-process, column-oriented SQL OLAP RDBMS Databend Rust An elastic and reliable Serverless Data Warehouse InfluxDB: Rust Time ...
wikitable – provides column headers with bold font on shaded background, and other common style. See here for details. This class should be used for almost all tables, unless there is a reason not to. sortable – adds up & down icons to column headers which enable
And it will do it correctly for tables with row headers too (see also Help:Table#Row headers). Tab2wiki will not compress the wikitext at all if this is checked: "First element in a row is a header". Note: The visual editor will copy templates (as in a column of country/state/province names with flag templates), but it will not copy inline ...
Specifies whether a header cell is a header for a column (scope="col"), row (scope="row"), group of columns (colspan="2" scope="colgroup"), or group of rows (rowspan="2" scope="rowgroup"). It has no visual effect, but is used by screen readers and is recommended according to accessibility guidelines .
The two most commonly used classes are "wikitable" and "wikitable sortable"; the latter allows the reader to sort the table by clicking on the header cell of any column. |+ caption Required for accessibility purposes on data tables, and placed only between the table start and the first table row. ! header cell Optional.
mw-collapsible also does not require a header row in the table, as collapsible did. Tables will show the "[hide]" / "[show]" controls in the first row of the table (whether or not it is a header row), unless a table caption is present.(see § Tables with captions) Example with a header row
ClickHouse is a fairly new column-oriented DBMS focusing on fast processing and response times. DuckDB [ 32 ] is an in-process SQL OLAP [ 33 ] database management system. MonetDB is a mature open-source column-oriented SQL RDBMS designed for OLAP queries.