T-SQL

Swap columns

Understanding T-SQL Expression Short-Circuiting

Understanding the basics of how T-SQL logic works in branching is important to ensure you code works as expected. This article will help you learn how this impacts control of flow language.

Improving 2D Range Query Performance in SQL Server

When using the BETWEEN operator on multiple columns, you are likely using a 2D range query. Such queries perform very poorly in SQL Server. This article examines rewriting these queries for improved performance.

smalldatetime

Fun(?) with DATETIME2

Using INSERT / OUTPUT in a SQL Server Transaction

Frequently I find myself in situations where I need to insert records into a table in a set-based operation wrapped inside of a transaction where secondarily, and within the same transaction, I spawn-off subsequent inserts into related tables where I need to pass-in key values that were the outcome of the initial INSERT command. Thanks to a Transact/SQL enhancement in SQL Server, this just became much easier and can be done in a single statement... WITHOUT A TRIGGER!

Subtle Line Feed / Carriage Return issue

Queries for SSC Community Participation

Bill Nicolich uses T-SQL to look at the community participation of people at SQLServerCentral.

Sequence