LiNQ SQL Saturday David Fekke

LiNQ Language Integrated Query

.NET 3.5 Framework

SQL vs. LiNQ

Abstraction

SQL Server 2005 Oracle

MySQL PostgreSQL Other RDBMS supported by Open Source

IQueriable Interface

Query Objects Query XML Query Databases

var myQuery = from p in db.people where p.firstname == “David” select p

LiNQ makes use .NET 3.5 language features

C# 3.0 VB .NET 9.0

Lamda Expressions Anonymous Types Dynamic Types

Pros and Cons Visual Studio Generates Object code No reason to create separate queries for each RDBMS Auto parametrize variables Use Stored Procedures No hinting careful about in memory quering SQL Statements are auto-generated with the exception of Stored Procs