Ex: SELECT COUNT(*) FROM customers; counts the total number of customers. You can use aggregate functions in SQL queries to perform operations on a set of values and return a single calculated ...

An aggregate function error in SQL occurs when you try to use an aggregate function in a way unsupported by the SQL language. You may experience the error if you do ...

SELECT CONCAT(author_fname, ' ', author_lname) AS author, MAX(pages) AS 'longest book' FROM books GROUP BY author_lname, author_fname; SELECT author_fname, author_lname, Min(released_year) FROM books ...

What is an SQL Window Function? A window is a set of rows or observations in a table or result set. In a table, you may have more than one window depending on how you specify the query.

BR><BR>Is there a way to use aggregate functions and only group on specific keys, rather than every column? For instance, I have the following query a lot.<BR><BR>Select (lots of junk), Count ...

This patch introduces user-defined SQL aggregate functions and an interface for creating them. Closes #2579 @TarantoolBot document Title: User-defined aggregate functions User-defined aggregate ...

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 ...