【EFCORE笔记】投影运算与数据分区

Projection Operations

Method Name	Description	More Information
Select	Projects values that are based on a transform function.	Enumerable.Select Queryable.Select
SelectMany	Projects sequences of values that are based on a transform function and then flattens them into one sequence.	Enumerable.SelectMany Queryable.SelectMany

Select

 

SelectMany

Partitioning Data

Operator Name	Description	More Information
Skip	Skips elements up to a specified position in a sequence.	Enumerable.Skip Queryable.Skip
SkipWhile	Skips elements based on a predicate function until an element does not satisfy the condition.	Enumerable.SkipWhile Queryable.SkipWhile
Take	Takes elements up to a specified position in a sequence.	Enumerable.Take Queryable.Take
TakeWhile	Takes elements based on a predicate function until an element does not satisfy the condition.	Enumerable.TakeWhile Queryable.TakeWhile

 

.NET Core 3.0 ：SkipLast and TakeLast