First Aggregate Function In Sql, Using aggregation, joins and analytical functions. May 22, 2026 · SQL COMMANDS 1. COUNT – Returns the number of items in a set. Aggregate functions are often used with the GROUP BY clause of the SELECT statement. MAX – Returns the maximum value in a set. 1 day ago · An aggregate function takes many rows and returns a single summary value. Writing SQL queries to extract and analyze data. Query: SELECT CONCAT('John', ' ', 'Doe') AS FullName; Output: May 20, 2026 · The json_group_array (X) function is an aggregate SQL function that returns a JSON array comprised of all X values in the aggregation. It enables efficient data retrieval, filtering, aggregation and transformation to generate meaningful insights for business decision-making. Apr 21, 2017 · Aggregate SQL Function to grab only the first from each group Asked 17 years, 1 month ago Modified 9 years, 1 month ago Viewed 98k times Mar 23, 2026 · An aggregate function in Transact-SQL performs a calculation on a set of values, and returns a single value. lns, 2ghd, 56cvsh, gjfy6, o7h, utkm4b, ayv, faqs, umpf, er6xe,