Security

Technical Article

SQL Server 2000 SP3 and xp_cmdshell Woes

  • Article

The problems caused by the SQL Sapphire Worm, also know as the SQL Slammer, have caused many sites to do a quick upgrade to SQL Server 2000 Service Pack 3 (SP3). It includes the fix that prevents infection by the worm. While moving to the latest service pack is usually a good thing, to do so without thorough testing risks breaking a working application. That is exactly what happened to one of my clients over the weekend.

2005-11-02

2,068 reads

Technical Article

Hacker's-eye view of SQL Server

  • Article

If a hacker sets sights on your SQL Server, there are four primary methods he can use to take control and carry out unauthorized, malicious activity. I will look at each of these: Password compromise, Account compromise, SQL injection, Buffer overflows

2005-10-07

4,718 reads

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Question of the Day

The "ORDER BY" clause behavior

Let’s consider the following script that can be executed without any error on both SQL Sever and PostgreSQL. We define the table t1 in which we insert three records:

create table t1 (id int primary key, city varchar(50));

insert into t1 values (1, 'Rome'), (2, 'New York'), (3, NULL);
If we execute the following query, how will the records be sorted in both environments?
select city

from t1

order by city;

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