Data Warehousing

Technical Article

Kimball University: Handling Arbitrary Restatements of History

  • Article

How do you cope with an executive's request to "bring back a time series of activity for all subscribers who were in platinum status as of X date," or "show me a time series of orders by sales region according to the sales organization as of Y"? Here's how data warehouse pros can cope with the common requirement to look back in time.

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2007-12-26

1,522 reads

Technical Article

Data is at the Heart of Enterprise-Wide BI and DW, Part 3

  • Article

My online series of articles has been focused on the need for businesses to "get serious" about their approach to developing an enterprise business intelligence (BI) and data warehousing (DW) capability. When pursuing this capability it is important to adopt a holistic view, followed by disciplined investment and execution.

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2007-10-26

2,267 reads

Technical Article

UDF: Estimating the size of a table

  • Script

In database planning and design it is essential to plan out how much HD space you are going to need to store your data. If you use BOL and do a search for "Estimating Table Size" you get three articles: - Estimating the size of a table - Estimating the size of a table with […]

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2006-06-21 (first published: )

538 reads

Technical Article

Pagination in stored procedure

  • Script

You recently published a script showing how to do pagination (e.g. results 20 - 30 of 100) It's also possible to do it quicker and more elegantly without having to resort to building the sql string dynamically (never a good thing IMHO). You pass in 2 parameters, @PageIndex is the first record you want (so […]

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2006-05-31 (first published: )

1,309 reads

Technical Article

Generate Add Foreign Keys statements for the table

  • Script

I was going through the painfull optimization of the database of creating better clustered indexes (not the default ones on the primary key).This operation was requiring removing all foreign keys to this table and then recreation them again.I created this script to optimize this quite tidious task.

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2006-06-08 (first published: )

767 reads

Technical Article

Source system pre-integration analysis

  • Script

Initial analysis of a new source system can be quite time consuming to manually examine tables and columns to determine which even have worthwhile values in the first place. Running this script against the current database will generate useful information for all the columns of all the tables. Details include data types with varchar lengths, […]

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2005-06-07

470 reads

Technical Article

Handle Divide by Zero in SQL Reporting Services

  • Script

Out of the box, Reporting services does not handle divide by zero conditions gracefully. There are plenty of posting on how to use the IIF() function to accomplish this, with some rather horrific looking code. In order to simplify the coding process and make the resulting expressions readable by a mere mortal, I wrote the […]

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2006-07-28 (first published: )

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Question of the Day

Finding Trailing Spaces

I have some data in a SQL Server 2025 database. It looks like this for the dbo.Customer table:

CustomerID CustomerName PreferredName
1          Steve        Steve               
2          Andy         Andy               
3          Brian        Brian               
4          Allan        Allan               
5          Devin        Devin               
6          Steve        Steve               
7          Sally        Sally
I want to detect which names have a single trailing space. The CustomerName is a varchar() and the PreferredName is a CHAR(). Does this query detect the problem rows?
SELECT 
       CustomerID,
       CustomerName,
       PreferredName
FROM Customer
WHERE CustomerName <> RTRIM(CustomerName)
OR PreferredName <> RTRIM(PreferredName);

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