Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Dany Lepage discusses the architectural ...

Count queries are probably the most-used aggregate queries in a relational database. Counting is a fundamental operation required for many CRUD applications like sorting, pagination, and searching.

Processing Aggregate Queries over Continuous Data Streams Johannes Gehrke, Cornell University In this talk, I will describe techniques for giving approximate answers for aggregate queries over data ...

Normalized data giving you problems? Learn how to use the SQL subselect statement and handle your database like a pro! Do you ever find yourself juggling queries to get the information you need?

When working with address data, you may encounter situations where you need to merge multiple columns, such as address, town, and postcode, into a single column. Power Query makes this task a breeze.