Chapter 5. Writing Query Expressions
This chapter explores the various rules and syntactical elements that define the structure of LINQ query expressions. It covers the seven types of query expression clauses and explains the four ways in which they introduce range variables. In the next chapter, you will read about the 49 different LINQ operators that can play 12 different roles in a query expression.
This chapter analyzes the structure of query expressions. It is divided into five main sections and various subsections:
• Syntactical analysis
Nomenclature
Clauses
Range variables
• Composing queries
Group-by clauses
The into keyword
Let clauses
• Joins
Inner joins
Group joins
Left outer joins
Using the object model to “join” classes
• Projections ...
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