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 ...

In early November 2021, Microsoft announced the private preview of its flagship database product, SQL Server 2022. (You can read the full announcement blog post at ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of changes to your data. Here's how to both create those tables and alter existing tables so they track the ...

The "Sum" function in Oracle allows you to add up all data from a specified column and displays a result in your query results. You can use the multiple feature with the sum function to multiply the ...