We can do so using the aggregate functions that SQL makes available to us. With these functions we can sum and average column data, request minimum and maximum values, and more. SQL also makes ...

Oracle, SQL Server, Postgres, DB2 - the list goes on.<BR><BR>The reality is you have to restructure your query. A CTE isn't necessary, but will likely make the query more readable.

Once grouped, aggregate functions can be applied to each group to produce summary results. For example, you might group sales data by product category, then calculate the total sales per category.

I'm trying to come up with a query format that will allow me to return multiple rows of aggregate data grouped by DATE, but the date values would be BETWEEN certain intervals.<BR><BR>As in, the ...