A composite key is a key made up of multiple columns.
复合键就是由多个列组成的键。
How can I do windowed query on multiple columns primary key?
我怎么能做窗口的多个列主键查询吗?
In the combo box at the top, select Data Table with multiple columns.
在顶部的组合框中,选择DataTablewithmultiple columns。
Fulltext search with relevance - why the need for a multiple columns index?
全文搜索相关性——为什么需要一个多列索引?
A design with multiple columns (3 + columns) is not necessarily a complex design.
多栏(3栏以上)不一定就是复杂的设计。
Multiple sort options for view columns.
视图列的多个排序选项。
Data table controls are more complex, because they contain multiple child controls, such as Columns.
数据表控件更加复杂,因为它们包含了多个子控件,例如Columns。
Notice that a table may have multiple TimeSeries columns.
注意,一个表可能有多个TimeSeries列。
Support for multiple User Profile columns in a view.
支持一个视图中有多个Userprofile列。
Support for multiple User Profile columns in a view.
支持一个视图中有多个Userprofile列。
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