Intro to aggregates in T-SQL

Guy: “Getting started with T-SQL? Patrick looks at using aggregate functions within your statements to help get the right results. If you are just starting with T-SQL in either Azure SQL Database or Azure Synapse Analytics, this is for you!”

Transact-SQL Reference (Database Engine)

https://docs.microsoft.com/en-gb/sql/t-sql/language-reference?view=sql-server-ver16

Aggregate Functions (Transact-SQL)

https://docs.microsoft.com/en-gb/sql/t-sql/functions/aggregate-functions-transact-sql?view=sql-server-ver16