In my daily use of SQL queries, aggregate functions are used to perform calculations on a set of values, returning a single value. Common examples include SUM, AVG, COUNT, MIN, and MAX.

There was an error while loading. Please reload this page. Window functions in SQL are a powerful feature that allows you to perform calculations across a specific ...

INCLUDE SQL Server] A table-valued function is a user-defined ... because they do not have to be materialized in memory as a whole. For example, a managed table-valued function could be used to parse ...

The error “Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause” occurs in SQL when a SELECT ...

Abstract: The article contains features of the implementation of aggregating functions for working with user-defined object data types in the Oracle DBMS in PL\SQL. An example of implementation and ...