Herve Roggero

Herve Roggero (MCSD, MCDBA) is an Integration Architect with Unisys and works on Windows Datacenter and SQL Server running on 32 processors (and it rocks!). Herve has experience in several industries including retail, real estate and insurance. First contact with RDBMS was in the early 90's.
Herve is a member of the Chicago SQL Server user group.
Hobbies: Piano and Star Gazing.

SQLServerCentral Article

Using Bitwise Operators to Boost Performance

Bitwise operators can be challenging to manage at first. However, with practice and patience, and under the right conditions, these operators can provide remarkable performance improvements in production environments. This article will compare two methods of accomplishing the same output, one with a normalized model and the other with bitwise operators.

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2002-09-05

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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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