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A database table can be thought of as consisting of rows and columns. [1] Each row in a table represents a set of related data, and every row in the table has the same structure. For example, in a table that represents companies, each row might represent a single company. Columns might represent things like company name, address, etc.
This is also known as a Vertical Partition in some database terms, restricting query output to view only specified fields or columns. With the same table, the query SELECT * FROM T WHERE C1 = 1 will result in all the elements of all the rows where the value of column C1 is '1' being shown – in relational algebra terms, a selection will be ...
MySQL Workbench now uses ANTLR4 as backend parser and has a new auto-completion engine that works with object editors (triggers, views, stored procedures, and functions) in the visual SQL editor and in models. The new versions add support for new language features in MySQL 8.0, such as common-table expressions and roles.
Version 5.1: production release 27 November 2008 (event scheduler, partitioning, plugin API, row-based replication, server log tables) Version 5.1 contained 20 known crashing and wrong result bugs in addition to the 35 present in version 5.0 (almost all fixed as of release 5.1.51). [29] MySQL 5.1 and 6.0-alpha showed poor performance when used ...
Note that although cell C is in column 2, C is the 1st cell declared in row 3, because column 1 is occupied by cell A, which was declared in row 2. Cell G is the only cell declared in row 5, because cell F occupies the other columns but was declared in row 4.
The transpose (indicated by T) of any row vector is a column vector, and the transpose of any column vector is a row vector: […] = [] and [] = […]. The set of all row vectors with n entries in a given field (such as the real numbers ) forms an n -dimensional vector space ; similarly, the set of all column vectors with m entries forms an m ...
Freeze Rows and Columns button became a split button and added "Freeze First Row" and "Freeze first Column" options in that button; Extensive function tooltips; Impress. Quick access to slide and page properties in a new 'Slide' and 'Page' content panel in the 'Properties' sidebar tab; Exporting to PDF only notes pages; Filters
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