Hello to all, I have to design a SQL query on an Oracle 10 DB. I want to do it in an elegant way and avoid, if possible, using sub-queries and in the most portable way possible. Basically it's ...

Self taught (and poorly at that) on SQL and I ran into something I cannot figure out if it is possible. Given that I have 2 tables: Cust_Info CI Cust_Rev_Info CRI I need to query CI with a child ...

Through the many changes in IT over the years, one constant has always been a concern for performance. With database systems there is especially true. Even with the many advances in relational ...

Do you ever find yourself juggling queries to get the information you need? Subselects, also called subqueries, may be just what you’ve been looking for. This SQL feature allows you to query ...

Airbnb has open sourced Airpal, the tool it built to help employees get to data they need to use. It's built on Facebook's open source Presto SQL engine.