Additional Articles


Technical Article

Manipulating Microsoft SQL Server Using SQL Injection

Focuses on advanced techniques that can be used in an attack on an application utilizing Microsoft SQL Server as a backend. These techniques demonstrate how an attacker could use a SQL Injection vulnerability to retrieve the database content from behind a firewall and penetrate the internal network. Also provided are recommendations on how to prevent such attacks.

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2005-01-05

2,626 reads

Technical Article

Get all from Table A that isn't in Table B

A common requirement when building a data warehouse is to be able to get all rows from a staging table where the business key is not in the dimension table. For example, I may want to get all rows from my STG_DATE table where the DateID is not in DIM_DATE.DateID.

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2004-12-29

2,168 reads

Technical Article

SQL Server: Compare Query Results - Part I

In the Database administration world, it is often necessary to run a query on the production box and then run the same query on the QA or UAT box and compare the results. In this article, I would like to introduce a method that takes advantage of an MS-DOS batch file and SQL Server utility, BCP.exe, to compare the query results executed on two different servers.

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2004-12-24

1,828 reads

Technical Article

Clustering for Indexes

There is nothing spectacular about using indexes per say. However, on many occasions I have come across a variety of SQL coders that never consider validating that the index they think they are using is efficient or even being used at all. We can all put indexes on the columns that we think will be required to satisfy individual queries, but how do we know if they will ever be used. You see, if the underlying table data is constructed, contains, or is ordered in a particular way, our indexes may never be used. One of the factors around the use of an index is its clustering factor and this is what this article is about.

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2004-12-23

3,412 reads

Technical Article

Introduction to MSSQL Server 2000 Analysis Services: Performing Increm

This article is a member of the series Introduction to MSSQL Server 2000 Analysis Services. The series is designed to provide hands-on application of the fundamentals of MS SQL Server 2000 Analysis Services, with each installment progressively adding features and techniques designed to meet specific real - world needs.

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2004-12-22

2,027 reads

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Question of the Day

RegEx Functions IV

I have this data in a table in a SQL Server 2025 database:

EmailAddressID EmailAddress
7              dylan0@ADVENTURE-WORKS.COM
8              Diane1@ADVENTURE-WORKS.COM
If I run this query, which row(s) are returned?
SELECT top 10
 *
 FROM person.EmailAddress
 WHERE REGEXP_LIKE(EmailAddress, '^D', 'i')
 AND BusinessEntityID IN (7,8)

See possible answers