SQL Server throws a wobbly when one tries to declare/create the same-named temporary table more than once in the same procedure - I guess the query analyser assumes that all temp table creations ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of the history of your data. Here's how to retrieve that historical data. In an earlier column, I showed how ...

About the Author Eric Johnson, SQL Server MVP, is the owner of Consortio Services in Colorado Springs providing IT systems management and technology consulting.

PolyBase, a data virtualization feature for SQL Server, allows users to seamlessly query data from various external sources directly using T-SQL (Transact-SQL) without the need for separate client ...

SQL lets you use one command to quickly create a new table containing a subset of records from a larger table while working in Access. Sound complicated? It's not, as Mary Ann Richardson shows us.

In SQL 7 and other high-end relational databases, each table is required to have a Unique Row Identifier or Primary Key in order to interact with other tables. Access does not require this and will ...