LINQ is one of the few technologies that you can start to use without a lot of preliminary learning. Also, it lends itself to learning by trying out examples. With Michael Sorens' help, you can watch as your conventional C# code changes to ravenous LINQ before your very eyes.
2011-01-21
3,948 reads
Did you know that by precompiling LINQ queries you might actually be degrading your app’s performance if you’re not careful? Julie Lerman explains how to ensure you’re not re-precompiling queries each time and losing the expected performance benefits across post-backs, short-lived service operations and other code where critical instances are going out of scope.
2010-05-18
2,242 reads
2009-06-19
3,061 reads
As XML has become a popular means to store data for ease of interoperability, how do we use LINQ to query XML data?
2008-07-09
3,607 reads
Prasanna Amirthalingam provides an overview of Entity Framework and how it can be used. He shows that it can provide an excellent interface between the Object-oriented model and the relational. The Entity Framework allows developers to work with data in the form objects and properties without having to concern themselves directly with either the stored procedures or functions of the defined interface, or the the underlying database tables and columns where this data is stored.
2008-06-11
2,488 reads
Language-Integrated Query (LINQ) is a groundbreaking innovation in Visual Studio 2008 and the .NET Framework version 3.5 that bridges the gap between the world of objects and the world of data. As LINQ is part of the development enhancements in SQL Server 2008, how can I have an understanding of how it works and how I can use it in other areas of administration, not just SQL Server?
2008-06-05
6,344 reads
LINQ to Objects and LINQ to Entities have an arsenal of Standard Query Operators that operate on sequences to perform a wide variety of operations.
2008-03-28
2,355 reads
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Comments posted to this topic are about the item Fun with JSON II
Comments posted to this topic are about the item Changing Data Types
Comments posted to this topic are about the item Answering Questions On Dropped Columns
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers