The cascade is an algorithm that defines how user agents combine property values originating from different sources. The cascade defines the origin and layer that takes precedence when declarations in more than one origin or cascade layer set a value for a property on an element....
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS describes how elements should be rendered on screen, on paper, in speech, or on other media....
文章浏览阅读1.5k次。删除一个数据库，默认情况下，hive不允许删除含有表的数据库，要先将数据库中的表清空才能drop，否则会报错加入CASCADE关键字，可以强制删除一个数据库hive (default)> drop database if exists table;FAILED: Execution E......
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