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External Article

Operator of the Week - Lazy Spool

Continuing to illuminate the depths of SQL Server's Query Optimizer, Fabiano shines a light on the sixth major Showplan Operator on his list: the Lazy Spool. What does the Lazy Spool do that's so special, how does the Query Optimizer use it, and why is it so Lazy? Fabiano Amorim explains all.

2010-06-28

2,774 reads

External Article

Making your SQL Server database changes backward compatible: Adding a new column

As multi-tier architectures grow over time, it is often challenging to coordinate those changes across the data, logic and presentation tiers. Unless planned and implemented carefully, an act as simple as adding a column to a table can grind all of the components of your application to a halt. While some of us have comfortable 12-hour maintenance windows every weekend, many of us are bound by service level agreements that are much more strict. So we must find ways to introduce fixes and new features with zero downtime, and without requiring every single component to be refactored at the same time.

2010-06-23

3,366 reads

External Article

Creating XML in SQL Server

XML has become a common form of representing and exchanging data in today's information age. SQL Server introduced XML-centric capabilities in SQL Server 2000. That functionality has been expanded in later releases. One aspect of working with XML is creating XML from relational data, which is accomplished utilizing the FOR XML clause in SQL Server.

2010-06-22

4,464 reads

External Article

Configure Windows Firewall for SQL Server 2008 Integration Services in Windows Server 2008 R2

I have installed SQL Server 2008 on Windows Server 2008 R2 and I am unable to connect to SQL Server 2008 Integration Services Instance from SQL Server 2008 Management Studio which is installed on another remote server. As I am new to Windows Server 2008 R2 it would be great if you can let me know the step by step approach to enable the default port of SQL Server 2008 Integration Services in Windows Firewall for user connectivity.

2010-06-21

3,201 reads

Technical Article

Sorting data in the SSIS Pipeline (Video)

In this post I want to show a couple of ways to order the data that comes into the pipeline. a number of people have asked me about this primarily because there are a number of ways to do it but also because some components in the pipeline take sorted inputs. One of the methods I show is visually easy to understand and the other is less visual but potentially more performant.

2010-06-18

15,661 reads

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Question of the Day

Creating a JSON Document III

I have this data in a table called dbo.NFLTeams

TeamID  TeamName       City             YearEstablished
------  --------       ----             ---------------
1       Cowboys        Dallas           1960
2       Eagles         Philadelphia     1933
3       Packers        Green Bay        1919
4       Chiefs         Kansas City      1960
5       49ers          San Francisco    1946
6       Broncos        Denver           1960
7       Seahawks       Seattle          1976
8       Patriots       New England      1960
If I run this code, how many rows are returned?
SELECT TOP 2 
  json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;

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