Couple this with the concept of correlated-subqueries (the process of running a "child" query for each row in the "parent" resultset), and you can get pretty much anything you want with 'simple' SQL.

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception.

Hey, been reading the board for a bit. First post. I'm having issues coming up with a SQL query that will provide the average admits for each day of the week. The data structure looks like this: ...