Articles

Technical Article

Migrating VLDB with Log Shipping

You just had a great weekend. You go grab your coffee and before you take a sip a manager grabs you and says, "we need your help." We need to migrate a very large database to our new data center. We need to keep the data in sync and have a short period of downtime when we cutover.

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2010-08-05

3,477 reads

External Article

Database Upgrade to SQL Server 2008 Tools and Approaches

Performing an upgrade is a complex and often risky project. A successful upgrade can provide an organization with a modern platform for development and production. An unsuccessful upgrade can cause lost time and money, and it can create a bad perception for the future.

This paper documents approaches and tools that can help DBAs and developers to achieve successful and mostly painless upgrade of SQL Server databases from Microsoft® SQL Server® 2000 or SQL Server 2005 to SQL Server 2008 (or SQL Server 2008 R2).

2010-08-04

3,731 reads

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Question of the Day

Fun with JSON I

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 *
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t;

See possible answers