How to Check to See if a Record Exists in Oracle. Though SQL (Structured Query Language) for databases has proved to be indispensable through decades of use, differences among SQL versions can ...

By understanding the difference between IN, EXISTS, NOT IN, and NOT EXISTS, you can avoid a very common problem when NULLs appear in the data of a subquery. Scott Stephens helps you understand ...

SQL Server 2008 has been designed to be a database administrators dream. Many of the features that currently exist in SQL Server 2005 are still there, but enhanced to make administration even that ...