Part 9: Extending U-SQL

There are 5 kinds of User-Defined entities in U-SQL User-Defined Functions (UDFs)User-Defined Types (UDTs)User-Defined Aggregators (UDAggs)User-defined Operators (UDOs)User-Defined Appliers All of them are defined by .NET code. C# is not required. Any .NET language will work. User-Defined Functions User defined functions are normal static methods on a .NET Class. Read More …

Part 8: Set operations and Joins

Set operations are a way of merging rowsets together based on set theoretic operations such as union (UNION). intersection (INTERSECT), complement (EXCEPT). Sample data Let’s define two RowSets: @a and @b. Notice that both RowSets have duplicate rows. UNION UNION combines two rowsets. UNION Read More …